Developer Blog
Tips, guides, and tutorials.
Deep dives into developer tools, best practices, and workflow improvements.
Featured
JSON Tools for Professionals: Format, Validate, Transform, and Generate Types in Seconds
A practical guide to WebdevToolbox's JSON suite — ten tools that cover every JSON task a developer encounters, from quick formatting to TypeScript type generation.
Why We Built WebdevToolbox: The Case for Browser-Native Developer Tools
Every developer deserves instant access to reliable tools — without downloads, logins, or privacy concerns. Here's the vision behind WebdevToolbox and why browser-native tools are the future.
More posts
Blackjack Basic Strategy: The Mathematically Optimal Play, Every Time
Look up the mathematically optimal blackjack action (hit, stand, double, or split) for any hard total, soft total, or pair against any dealer upcard. Free, client-side.
Blood Alcohol Content Calculator: Understanding the Widmark Formula
Estimate blood alcohol concentration from body weight, biological sex, standard drinks consumed, and hours elapsed, using the Widmark formula. Free, client-side, educational estimate only.
Crossword Puzzle Generator: Build an Interlocking Grid from Any Word List
Generate a crossword puzzle grid with numbered across/down clues from your own word + clue list, with words automatically interlocked at shared letters. Free, client-side.
Ring Size Calculator: Converting Between US, UK, and EU Sizing
Convert a finger circumference or ring inner diameter measurement (in mm) into US, UK/AU, and EU ring sizes using a standard sizing reference table. Free, client-side.
Wind Chill Calculator: Why It Feels So Much Colder Than the Thermometer Says
Calculate the 'feels like' wind chill temperature from air temperature and wind speed using the official U.S. National Weather Service formula. Free, client-side.
Attic Insulation Calculator: How Much Do You Really Need?
Estimate how many additional inches of insulation and how many bags you need to reach a target R-value, based on your attic area and current insulation level. Free, client-side.
Poker Odds Calculator: How Strong Is Your Starting Hand, Really?
Estimate your Texas Hold'em pre-flop win probability against 1-8 opponents using a 5,000-hand Monte Carlo simulation of your two hole cards. Free, client-side.
Protein Intake Calculator: How Much Protein Do You Actually Need?
Calculate your recommended daily protein intake in grams based on body weight and activity/training goal, from sedentary maintenance to muscle-building or cutting. Free, client-side.
Reversi (Othello): Flip Your Way to Board Control
Play Reversi (Othello) against the computer — sandwich opponent discs between your own to flip them, and win by controlling the most discs when the board fills. Free, client-side.
Word Search Generator: Build Your Own Puzzle from Any Word List
Generate a printable word search puzzle from your own word list — words are placed in random directions across a customizable grid, with an optional solution overlay. Free, client-side.
Checkers: Play a Full Game of Draughts Right in Your Browser
Play checkers against the computer — mandatory captures, multi-jump chains, kinging, and a capture-prioritizing AI opponent. Free, client-side, no download.
Child Growth Percentile Calculator: Understanding Weight-for-Age
Estimate a child's weight-for-age percentile (0-36 months) compared to WHO reference data, using sex, age in months, and current weight. Free, client-side.
Flashcard Maker: Build and Study Your Own Deck Instantly
Create your own custom flashcard deck with front/back text, then study by flipping, shuffling, and navigating through your cards. Free, client-side, no account needed.
Solar Panel Payback Calculator: When Does Solar Actually Pay For Itself?
Estimate how many years it takes for solar panel electricity savings to pay back the system cost, accounting for rising electricity rates and maintenance. Free, client-side.
Wire Gauge Calculator: Find the Right AWG for Your Circuit
Calculate the minimum recommended copper wire gauge (AWG) for a circuit based on current, run length, voltage, and acceptable voltage drop. Free, client-side.
Body Surface Area Calculator: Mosteller vs Du Bois
Calculate body surface area using the Mosteller and Du Bois formulas from height and weight — the measurements used for medication dosing and burn assessment.
Commute Cost Calculator: What's the Drive Really Costing You?
Calculate the daily, monthly, and yearly fuel cost of your commute from one-way distance, MPG, gas price, and commute days per week. Free, client-side.
Drywall Calculator: How Many Sheets, Screws, and Compound Do You Need?
Estimate drywall sheets, screws, and joint compound for a room from its dimensions and sheet size, with a waste allowance built in. Free, client-side.
Minesweeper: The Classic Logic Puzzle Game, Online
Play Minesweeper online — reveal cells, avoid 10 hidden mines, and use number clues to flag them all on a classic 9×9 grid. Free, no download.
Periodic Table Element Lookup: Search by Name, Symbol, or Number
Search the periodic table by element name, symbol, or atomic number to instantly find atomic mass, category, and other key facts. Free, no ads.
Battleship: The Classic Naval Strategy Game, Online
Play Battleship against the computer — place your 5-ship fleet on a 10×10 grid and fire until one side's fleet is completely sunk. Free, no download.
Car Depreciation Calculator: What Will Your Vehicle Be Worth?
Estimate your car's value loss over time with a compounding annual depreciation rate and a full year-by-year breakdown. Free, client-side calculator.
Ovulation Calculator: Estimate Your Fertile Window
Estimate your ovulation day, fertile window, and next expected period from your last menstrual period date and average cycle length. Free, client-side.
Roofing Calculator: How Many Shingle Bundles Do You Actually Need?
Calculate roof surface area, roofing squares, and shingle bundles from footprint dimensions and pitch, including a waste factor. Free, client-side.
Unit Price Comparison Calculator: Find the Actually Cheaper Product
Compare two products by true per-unit cost (price ÷ quantity) to find which is really the better deal, regardless of package size. Free, client-side.
Electricity Cost Calculator: What's That Appliance Really Costing You?
Calculate the daily, monthly, and yearly running cost of any appliance from its wattage, usage hours, and your electricity rate. Free, no sign-up.
Macro Calculator: TDEE, Protein, Carbs, and Fat in Grams
Calculate your daily calorie needs and macronutrient targets (protein, carbs, fat) from body stats, activity level, and macro split. Free, client-side.
Memory Match Game: Train Your Recall With 16 Cards
Play the classic card-matching memory game online — flip two cards at a time, find all 8 pairs, and try to beat your best move count. Free, no download.
Multiplication Table Generator: Instant Times Tables for Any Number
Generate a multiplication table for any number, up to 10, 12, or 20 — a simple, instant study aid for learning times tables. Free, client-side.
Pet Age Calculator: Dog and Cat Years, Without the ×7 Myth
Convert your dog or cat's age into human-equivalent years using real veterinary and epigenetic-clock formulas — not the oversimplified multiply-by-7 rule.
Pregnancy Due Date Calculator: Naegele's Rule Explained
Estimate a pregnancy due date and trimester milestones from the first day of the last menstrual period, using the standard Naegele's rule formula.
Simple Interest Calculator: I = P × r × t Explained
Calculate simple interest and total repayment from principal, rate, and time using I = P × r × t. Free client-side calculator, no compounding assumptions.
Sleep Cycle Calculator: Wake Up at the Right Point in Your Sleep
Calculate ideal bedtimes or wake-up times based on 90-minute sleep cycles, so you wake at the end of a cycle instead of mid-cycle. Free client-side calculator.
Stair Calculator: Risers, Treads, and Total Run Made Simple
Calculate the number of risers, actual riser height, number of treads, and total run for a staircase from total rise and target riser height.
Water Intake Calculator: How Much Water Should You Actually Drink?
Estimate your recommended daily water intake in ounces and liters from body weight and exercise minutes. Free client-side hydration calculator.
Chinese Zodiac Calculator: Find Your Animal and Element
Calculate your Chinese zodiac animal and element from your birth year, based on the traditional 12-year animal cycle and 10-year elemental cycle.
Connect Four: Play Against a Minimax AI With Alpha-Beta Pruning
Free browser Connect Four against a real minimax AI opponent using alpha-beta pruning. Drop discs, connect four in a row, and try to outsmart the computer.
Weighted Grade Calculator: Find Your Course Grade From Any Category Breakdown
Calculate your overall course grade from custom weighted categories like homework, quizzes, and exams. Free client-side weighted grade calculator.
Gravel Calculator: Cubic Yards and Tons for Any Driveway or Path
Calculate cubic yards and tons of gravel needed for a driveway, path, or base layer from area, depth, and material density. Free client-side calculator.
VO2 Max Calculator: Estimate Aerobic Fitness From the Cooper Test
Estimate your VO2 max from the Cooper 12-minute run test distance, with a fitness category rating. Free client-side calculator.
Flooring Calculator: How Many Boxes Do You Actually Need?
Calculate boxes of tile, laminate, hardwood, or vinyl flooring needed from room dimensions, waste allowance, and coverage per box. Free client-side calculator.
Hangman: Classic Word-Guessing Game, Developer Edition
Play hangman in your browser with programming-themed words. Guess letters, watch the ASCII gallows fill in, and try to reveal the word before six wrong guesses.
Mulch Calculator: How Much Mulch Do You Actually Need?
Calculate cubic feet, cubic yards, and bags of mulch needed for any garden bed from area and depth. Free client-side calculator.
One-Rep Max Calculator: Epley vs Brzycki Formulas Explained
Estimate your one-rep max (1RM) from any weight/rep combination using both the Epley and Brzycki formulas, plus a percentage-based training table.
Running Pace Calculator: Pace, Speed, and Race Predictions
Calculate running pace and speed from distance and time, plus predicted finish times for 5K, 10K, half marathon, and marathon at that pace. Free client-side tool.
Hourly to Salary Calculator: Convert Pay Rates Instantly
Convert an hourly wage to an annual salary or an annual salary back to an hourly rate. Free client-side calculator, no sign-up.
Net Worth Calculator: Track Your Real Financial Position
Calculate your net worth by listing assets and liabilities. Free client-side net worth calculator with instant results and a clear breakdown.
Overtime Pay Calculator: Regular vs Overtime Pay Breakdown
Calculate regular pay, overtime pay, and total paycheck from hourly rate, overtime multiplier, and hours worked. Free client-side calculator.
Savings Goal Calculator: How Much to Save Each Month
Find the exact monthly contribution needed to hit a savings goal by a target date, accounting for interest. Free client-side savings goal calculator.
Play Tic-Tac-Toe Against an Unbeatable Minimax AI
Free browser tic-tac-toe with a perfect minimax AI opponent. Try to win — the best you can do is force a draw.
Baby Name Generator: Curated Lists, Not a Live Trend Database
How our baby name generator picks from curated girl, boy, and unisex name lists, and how the starting-letter filter works.
Fence Cost Calculator: Why Gates Get Their Own Line Item
How to estimate a fencing project's total cost from linear footage and a combined material-plus-installation rate, and why gates are priced separately.
Freelance Rate Calculator: Why 'Salary ÷ 2000 Hours' Undercharges You
How to calculate a real minimum freelance hourly rate that accounts for taxes, unpaid time off, and non-billable work — not just a simple salary division.
Love Calculator: A Deterministic Hash, Dressed Up as a Prediction
How our love calculator works under the hood — a fun, order-independent hash of two names — and why it's entertainment, not science.
Sudoku Solver: Backtracking, Explained Through a Puzzle You Can Watch It Solve
How a backtracking algorithm solves any valid Sudoku puzzle, and what happens when a puzzle has no solution.
Concrete Calculator: How Many Bags Does a Slab Actually Need?
How to calculate cubic yards of concrete and the number of 80 lb pre-mix bags needed for a slab, and why you should still buy a bit extra.
Target Heart Rate Zones: Why 'Just Use 220 Minus Your Age' Isn't Quite Enough
How the Karvonen formula uses your resting heart rate, not just your age, to compute more personalized target heart rate training zones.
Ideal Weight Calculator: Four Formulas, Because None of Them Is 'The' Answer
Why our ideal weight calculator shows Devine, Robinson, Miller, and Hamwi results side by side instead of picking just one formula.
Paint Cost Calculator: Why Two Coats Means Double the Paint, Not Double the Effort
How to estimate how much paint and money a room actually needs, and why the number of coats matters more than people expect.
Waist-to-Hip Ratio: A Different Number Than BMI, Measuring a Different Thing
Why waist-to-hip ratio uses different risk thresholds for men and women, and what it measures that overall body weight or BMI doesn't.
Cooking Measurement Converter: Why We Don't Convert Cups to Grams
Volume-to-volume and weight-to-weight conversions are exact; volume-to-weight isn't, because it depends on the ingredient. Here's why our converter keeps them separate.
Debt Snowball vs. Avalanche: Simulating Both So You Don't Have to Guess
How the debt snowball and avalanche payoff strategies actually differ month by month, and why avalanche usually (but not always) saves the most interest.
Recipe Scaler: Doubling a Recipe Without Doing Fraction Math in Your Head
How our recipe scaler parses decimals, fractions, and mixed numbers to scale an ingredient list up or down for any number of servings.
Retirement Savings Calculator: What Your Monthly Contributions Actually Turn Into
How compound interest turns a current balance plus small monthly contributions into a much larger number over decades, and why the math is two separate calculations added together.
ROI Calculator: Turning a Gain Into a Number You Can Compare
How to calculate return on investment (ROI) and annualized return (CAGR), and why a 35% total gain doesn't mean the same thing over 1 year as it does over 10.
Data Storage Unit Converter: Bytes, KB, MB, GB, and the Binary vs. Decimal Confusion
Convert between bytes, KB/MB/GB/TB (decimal, 1000-based) or KiB/MiB/GiB/TiB (binary, 1024-based), showing all units side by side at once.
Paper Size Converter: A-Series, B-Series, and US Paper Dimensions
Reference dimensions for A-series (A0-A7), B-series (B0-B7), and US/ANSI paper sizes (Letter, Legal, Tabloid), shown in millimeters, centimeters, or inches.
Reaction Time Test: How Fast Are Your Reflexes?
Test your visual reaction time — click as soon as the box turns green, with live tracking of your last, best, and average reaction time across attempts.
Screen Resolution Calculator: Aspect Ratio, Megapixels, and PPI
Calculate aspect ratio, total megapixels, and pixels-per-inch (PPI) from a screen resolution and physical diagonal size, with common resolution name lookup.
Typing Speed Test: Check Your WPM and Accuracy, Free
Test your typing speed (words per minute) and accuracy against a randomized short passage, timed live as you type.
Body Fat Percentage Calculator: The U.S. Navy Method, Online
Estimate your body fat percentage using the U.S. Navy circumference method — just neck, waist, and height (plus hip for women) — no calipers or scan required.
Dog Age Calculator: What's Your Dog's Age in Human Years, Really?
Convert a dog's age into approximate human-equivalent years using the American Veterinary Medical Association's guideline — more accurate than the old 'multiply by 7' rule.
Fuel Cost Calculator: Estimate What Any Road Trip Will Cost
Estimate how much fuel a trip will use and what it will cost, from distance, vehicle fuel efficiency (MPG, L/100km, or km/L), and fuel price.
GPA Calculator: Track Your Grade Point Average Instantly
Calculate your grade point average from letter grades and credit hours, on a 4.0 or 5.0 scale, with live updates as you add or edit courses.
Shoe Size Converter: US, UK, EU, and CM in One Chart
Convert shoe sizes between US, UK, EU, and centimeters for men's and women's sizing, using standard published conversion charts.
Day of the Week Calculator: What Day Does Any Date Fall On?
Find out what day of the week any past or future date falls on, plus its day-of-year number and leap year status — free, instant, and entirely in your browser.
Magic 8-Ball: The Classic Fortune-Telling Toy, Online
Ask a yes/no question and shake the classic Magic 8-Ball for one of its 20 traditional randomized answers — free, instant, and right in your browser.
Moon Phase Calculator: Check the Moon's Phase for Any Date
Find the approximate moon phase for any date — new moon, quarters, gibbous, and full moon — using a standard astronomical approximation, right in your browser.
Scrabble Score Calculator: Instantly Check Any Word's Point Value
Calculate the point value of any word using standard English-language Scrabble tile values, with optional double word and triple word score multipliers.
Zodiac Sign Calculator: Find Any Birth Date's Western Zodiac Sign
Instantly find which of the 12 Western zodiac signs a birth date falls under, along with its date range and classical element — Fire, Earth, Air, or Water.
How to Use the Break-Even Point Calculator — WebdevToolbox Guide
Calculate the break-even point in units and revenue from fixed costs, price per unit, and variable cost per unit.
How to Use the Markup Calculator — WebdevToolbox Guide
Calculate the selling price and profit amount from a cost and markup percentage, where markup is a percentage of cost.
How to Use the Pigpen Cipher Tool — WebdevToolbox Guide
Encode text into the classic Pigpen (Freemason's) cipher, rendering each letter as its traditional grid symbol.
How to Use the Profit Margin Calculator — WebdevToolbox Guide
Calculate profit margin percentage from cost and selling price, or find the selling price needed to hit a target margin.
How to Use the Sales Tax Calculator — WebdevToolbox Guide
Add sales tax to a pre-tax price, or reverse-calculate the pre-tax price from a tax-inclusive total, given a tax rate.
How to Use the ASCII85 (Base85) Encoder/Decoder — WebdevToolbox Guide
Encode and decode text using ASCII85, the compact binary-to-text encoding used in Adobe PostScript/PDF and Git binary patches.
How to Use the Discount Calculator — WebdevToolbox Guide
Calculate a discounted price from an original price and percent off, with support for two stacked sequential discounts and the effective combined rate.
How to Use the EAN/UPC Barcode Validator — WebdevToolbox Guide
Validate EAN-8, EAN-13, and UPC-A barcode check digits using the standard weighted-modulo-10 checksum, or compute the correct check digit for a partial code.
How to Use the Image Metadata Remover — WebdevToolbox Guide
Strip EXIF, GPS, and ICC metadata from a JPEG, PNG, or WebP image by redrawing it onto a canvas and re-exporting a clean copy, entirely in your browser.
How to Use the Username Generator — WebdevToolbox Guide
Generate random adjective+noun usernames with an optional number suffix, using cryptographically strong randomness.
How to Use the DNS Record Types Cheatsheet — WebdevToolbox Guide
Searchable reference of common DNS record types (A, AAAA, CNAME, MX, TXT, NS, SOA, PTR, SRV, CAA, and DNSSEC records) with their purpose and a real-world example.
How to Use the Duplicate Word Finder — WebdevToolbox Guide
Scan text for consecutive repeated words like 'the the', plus a full list of every word that repeats anywhere in the text with its count.
How to Use the Hash Identifier — WebdevToolbox Guide
Paste a hash string and see the likely algorithm(s) it could be, based on its length, character set, and format.
How to Use the Permutation & Combination Calculator — WebdevToolbox Guide
Calculate nPr (permutations) and nCr (combinations) for any n and r with exact BigInt precision and the formula shown step-by-step.
How to Use the Work Hours Calculator — WebdevToolbox Guide
Calculate total hours worked from clock-in/clock-out times across multiple days, with unpaid breaks deducted and a decimal-hours total for payroll.
How to Use the Alarm Clock — WebdevToolbox Guide
Set an alarm for a specific time of day and get an audible chime plus a browser notification when it rings, right from your browser tab.
How to Use the Coin Flip Simulator — WebdevToolbox Guide
Flip one or more virtual coins using cryptographically strong randomness, with a running heads/tails tally and multi-coin flips.
How to Use the CSS Flexbox Generator — WebdevToolbox Guide
Visually build Flexbox layouts with flex-direction, wrap, justify-content, align-items, and gap controls, plus a live preview with adjustable item counts.
How to Use the GCD & LCM Calculator — WebdevToolbox Guide
Calculate the greatest common divisor and least common multiple of two or more integers, with a visible step-by-step Euclidean algorithm trace.
How to Use the Quadratic Equation Solver — WebdevToolbox Guide
Solve ax² + bx + c = 0 using the quadratic formula, with the discriminant, both roots (real or complex), and the parabola's vertex shown instantly.
How to Use the CSS Blend Mode Generator — WebdevToolbox Guide
Preview all 16 CSS mix-blend-mode and background-blend-mode values live, and copy the exact CSS for your project.
How to Use the IPv6 Address Expander — WebdevToolbox Guide
Expand shorthand IPv6 addresses with :: zero-compression to their full 8-group form, or compress a full address back to its shortest valid representation.
How to Use the Nihilist Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the 19th-century Nihilist cipher — a keyed Polybius square combined with an additive keyword for stronger frequency-flattening than a plain grid cipher.
How to Use the Reading Time Estimator — WebdevToolbox Guide
Estimate how long a piece of text takes to read silently or read aloud, with configurable words-per-minute rates and live word, sentence, and paragraph counts.
How to Use the Word Cloud Generator — WebdevToolbox Guide
Paste any text and get an instant word cloud on canvas, sized by frequency with common stop words filtered out — downloadable as a PNG.
How to Use the ADFGX Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the WWI German ADFGX field cipher, combining a keyed Polybius square with a columnar transposition.
How to Use the CSS Button Generator — WebdevToolbox Guide
Design a button visually — colors, hover state, padding, border radius, shadow, and font size — then copy ready-to-use HTML and CSS.
How to Use the Fibonacci Sequence Generator — WebdevToolbox Guide
Generate the Fibonacci sequence up to any number of terms with exact BigInt precision, plus the golden-ratio approximation of the last two terms.
How to Use the JSON Diff Viewer — WebdevToolbox Guide
Compare two JSON documents and see every added, removed, and changed value, with the full key path to each difference.
How to Use the Temperature Converter — WebdevToolbox Guide
Convert between Celsius, Fahrenheit, and Kelvin instantly — edit any field and the other two update automatically.
How to Use the Baconian Cipher Tool — WebdevToolbox Guide
Encode and decode text with Francis Bacon's 1605 steganographic cipher, where every letter becomes a unique 5-character A/B sequence.
How to Use the CSS Toggle Switch Generator — WebdevToolbox Guide
Build an accessible, pure-CSS iOS/Android-style toggle switch from a real checkbox input, with customizable size, colors, and animation speed.
How to Use the Morse Code Translator — WebdevToolbox Guide
Convert text to International Morse Code and back, with audible dot/dash playback generated live in your browser.
How to Use the Business Days Calculator — WebdevToolbox Guide
Count business days between two dates, or add N business days to a starting date, excluding weekends and any holidays you list.
How to Use the Caesar Box Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the Caesar Box (route) cipher, a classical columnar transposition that rearranges letters instead of substituting them.
How to Use the CSS 3D Card Generator — WebdevToolbox Guide
Build flip-animation 3D cards with pure CSS — configure the flip axis, trigger, duration, and front/back content, then copy the generated CSS.
How to Use the CSS Conic Gradient Generator — WebdevToolbox Guide
Build CSS conic-gradient backgrounds visually — pick an angle, a center point, and any number of color stops, then copy the generated CSS.
How to Use the Straddling Checkerboard Tool — WebdevToolbox Guide
Encode text into digits and decode digits back to text with the straddling checkerboard cipher, the digit-based foundation behind many historical field ciphers.
How to Use the Binary Clock — WebdevToolbox Guide
Watch the current time displayed as a live Binary-Coded Decimal (BCD) clock, with each digit of hours, minutes, and seconds shown as a column of binary dots.
How to Use the Calorie Calculator — WebdevToolbox Guide
Estimate your daily calorie needs using the Mifflin-St Jeor equation, based on your age, sex, height, weight, and activity level.
How to Use the CSS Mask Generator — WebdevToolbox Guide
Generate CSS mask-image rules for gradient-based edge fades and vignette effects, with a live preview and cross-browser -webkit- prefix included.
How to Use the Kanban Board — WebdevToolbox Guide
A simple To Do / In Progress / Done task board saved in your browser, using dropdown-based column moves instead of drag-and-drop.
How to Use the Trifid Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the Trifid cipher, Félix Delastelle's three-dimensional extension of Bifid using a 27-letter cube of coordinates.
How to Use the Bifid Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the Bifid cipher, a fractionating cipher that converts letters to Polybius coordinates, recombines them, and reads new letters back out.
How to Use the CSS Container Query Generator — WebdevToolbox Guide
Build a @container CSS query that responds to a parent container's own size rather than the viewport, with the required container-type setup included.
How to Use the Dice Probability Calculator — WebdevToolbox Guide
Calculate the exact probability of every possible sum when rolling any number of dice with any number of sides, using full combinatorial math rather than simulation.
How to Use the Eisenhower Matrix Tool — WebdevToolbox Guide
Prioritize tasks using the classic Urgent/Important 2x2 matrix — sort items into Do First, Schedule, Delegate, and Delete quadrants, saved locally in your browser.
How to Use the Four-Square Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt letter pairs with the Four-Square cipher, a digraph substitution cipher that uses four 5x5 grids and two independent keywords.
How to Use the CSS Scrollbar Styler — WebdevToolbox Guide
Design a custom scrollbar with adjustable width, thumb color, track color, and corner radius, generating CSS for both WebKit/Blink and Firefox with a live preview.
How to Use the Polybius Square Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the Polybius square, an ancient Greek coordinate cipher that maps each letter to a row/column pair on a 5x5 grid.
How to Use the Random Team Generator — WebdevToolbox Guide
Split a list of names into a chosen number of randomly shuffled, evenly-sized teams — great for sports, classroom groups, or team-building activities.
How to Use the Secret Santa Generator — WebdevToolbox Guide
Randomly assign gift-giving pairs for a group, guaranteeing nobody draws their own name, with optional exclusion pairs for couples or family members.
How to Use the Tap Code Translator — WebdevToolbox Guide
Encode and decode the Tap Code, which represents each letter as a pair of knock counts on a 5x5 grid — historically used by prisoners of war to communicate through walls.
How to Use the Beaufort Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the Beaufort cipher, a reciprocal Vigenère variant using C = (K − P) mod 26, where the same operation both encrypts and decrypts.
How to Use the CSS Clamp() Calculator — WebdevToolbox Guide
Generate a fluid CSS clamp(min, preferred, max) expression from two viewport-width/size breakpoints, for responsive typography and spacing that scales smoothly without media queries.
How to Use the Hill Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the Hill cipher, a classic polygraphic substitution cipher that multiplies pairs of letters by a 2x2 key matrix modulo 26.
How to Use the SQL Minifier — WebdevToolbox Guide
Minify SQL queries by stripping comments and collapsing whitespace, while carefully preserving the exact contents of string literals.
How to Use the Tournament Bracket Generator — WebdevToolbox Guide
Build a single-elimination tournament bracket from a list of entrant names, with automatic byes assigned to top seeds when the entrant count isn't a power of two.
How to Use the Affine Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the Affine cipher, a mathematical substitution cipher using the formula E(x) = (a·x + b) mod 26, with validation that key A is coprime with 26.
How to Use the Glob Pattern Tester — WebdevToolbox Guide
Test a glob pattern against a list of sample file paths to see exactly which ones match, supporting *, **, ?, character classes, and brace alternation.
How to Use the INI to JSON Converter — WebdevToolbox Guide
Convert classic INI configuration file syntax (sections, key=value pairs, comments) into structured JSON, with automatic type coercion for booleans and numbers.
How to Use the Rail Fence Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the classic Rail Fence transposition cipher, writing letters in a zigzag across a configurable number of rails, with a visual diagram of the pattern.
How to Use the Soundex & Metaphone Generator — WebdevToolbox Guide
Generate Soundex and Metaphone phonetic codes for a list of names or words, useful for fuzzy name matching, deduplication, and search-by-sound lookups.
How to Use the Braille Translator — WebdevToolbox Guide
Convert text to Grade 1 (uncontracted) Unicode Braille and back, with automatic number-sign and capital-sign handling.
How to Use the Dice Roller — WebdevToolbox Guide
Roll one or more dice of any common type (d4-d100) or a custom side count, using cryptographically strong randomness, with a running roll history and total.
How to Use the Gravatar URL Generator — WebdevToolbox Guide
Build a Gravatar avatar image URL from an email address using a client-side MD5 hash, with configurable size, default image style, and content rating.
How to Use the Levenshtein Distance Calculator — WebdevToolbox Guide
Compute the Levenshtein edit distance and similarity percentage between two strings, showing how many insertions, deletions, or substitutions separate them.
How to Use the Playfair Cipher Tool — WebdevToolbox Guide
Encrypt and decrypt text with the classic Playfair digraph substitution cipher using a 5×5 key square built from your keyword, with the generated square shown.
How to Use the Emmet Cheatsheet — WebdevToolbox Guide
Searchable, filterable reference for Emmet HTML and CSS abbreviation syntax, with expandable examples showing the generated markup or CSS for each abbreviation.
How to Use the Git Branch Name Generator — WebdevToolbox Guide
Turn a change type, optional ticket number, and short description into a clean, conventional, kebab-case git branch name plus a ready-to-run checkout command.
How to Use the Linux Exit Code Lookup — WebdevToolbox Guide
Look up what a Bash/Linux process exit code means, plus browse a searchable reference table of common exit codes including 128+signal codes.
How to Use the MongoDB ObjectId Generator & Decoder — WebdevToolbox Guide
Generate a valid MongoDB ObjectId or decode an existing one to reveal its embedded creation timestamp, random value, and counter.
How to Use the Snowflake ID Decoder — WebdevToolbox Guide
Decode Twitter/X or Discord-style Snowflake IDs into their embedded timestamp, worker/datacenter ID, process ID, and sequence number, with selectable epochs.
How to Use the Atbash Cipher Tool — WebdevToolbox Guide
Encode or decode text with the Atbash cipher — a mirror-alphabet substitution (A↔Z, B↔Y...) that is its own inverse.
How to Use the DMS ↔ Decimal Degrees Converter — WebdevToolbox Guide
Convert geographic coordinates between Decimal Degrees and Degrees-Minutes-Seconds (DMS) notation, in both directions.
How to Use the CSS Gradient Text Generator — WebdevToolbox Guide
Build CSS gradient-filled text using background-clip: text, with adjustable colors, angle, and font size, plus a live preview and copyable CSS.
How to Use the Haversine Distance Calculator — WebdevToolbox Guide
Calculate the great-circle distance and initial compass bearing between two latitude/longitude points using the Haversine formula.
How to Use the XOR Cipher Tool — WebdevToolbox Guide
Encrypt text with a repeating-key XOR cipher and view the result as hex or Base64, with matching decryption back to plain text.
How to Use the BEM Class Name Generator — WebdevToolbox Guide
Build BEM (Block__Element--Modifier) class names from a block, element, and modifier, with kebab-case normalization and an example HTML snippet.
How to Use the Compound Interest Calculator — WebdevToolbox Guide
Project how an investment or savings balance grows over time with compound interest and optional regular contributions, with a year-by-year breakdown.
How to Use the Loading Skeleton Generator — WebdevToolbox Guide
Generate a shimmering CSS skeleton-loader placeholder (avatar + text, card, or list layout) with copyable HTML and CSS.
How to Use the px / rem / em Converter — WebdevToolbox Guide
Convert a CSS length between pixels, rem, and em given a configurable root and parent font size, plus batch-convert a list of px values to rem.
How to Use the Vigenère Cipher Tool — WebdevToolbox Guide
Encrypt or decrypt text with the classic Vigenère polyalphabetic cipher using a repeating keyword, with a letter-by-letter breakdown.
How to Use the Acronym Generator — WebdevToolbox Guide
Turn any phrase into an acronym or initialism, with options to skip minor connector words, choose a separator, and control casing.
How to Use the CSV Diff Checker — WebdevToolbox Guide
Compare two CSV files cell-by-cell to find exactly which rows were added, removed, or changed, with optional row matching by an ID column.
How to Use the NATO Phonetic Alphabet Translator — WebdevToolbox Guide
Convert any text into the NATO/ICAO phonetic alphabet (Alpha, Bravo, Charlie...) for spelling names and codes clearly over radio or phone.
How to Use the Open Graph Image Generator — WebdevToolbox Guide
Build a real 1200×630 Open Graph / Twitter Card share image with a title, subtitle, and gradient background, rendered on a canvas and downloadable as a PNG.
How to Use the Vowel & Consonant Counter — WebdevToolbox Guide
Count vowels, consonants, digits, and other characters in any text, with a per-vowel breakdown and top consonant frequency chart.
How to Use the Binary Calculator — WebdevToolbox Guide
Perform arithmetic (add, subtract, multiply, divide) and bitwise operations (AND, OR, XOR, NOT, shifts) on binary numbers, with live decimal/hex cross-reference.
How to Use the Breadcrumb Generator — WebdevToolbox Guide
Build accessible breadcrumb navigation HTML and matching schema.org BreadcrumbList JSON-LD from a simple list of page names and URLs.
How to Use the Canonical URL Checker — WebdevToolbox Guide
Paste HTML and your page URL to check canonical tag presence, validity, self-referencing status, and common SEO mistakes like duplicate or relative canonicals.
How to Use the Character Counter — WebdevToolbox Guide
Count characters, bytes, and lines in your text, with live progress bars against common platform limits like Twitter/X, SMS, and meta description length.
How to Use the Color Name Finder — WebdevToolbox Guide
Find the nearest standard CSS named color for any hex value using Euclidean RGB distance, or search and browse all 148 named colors.
How to Use the CSS Reset Generator — WebdevToolbox Guide
Build a modern, minimal CSS reset from toggleable rule groups — box-sizing, margin removal, responsive media defaults, form inheritance, accessible focus styles, and more.
How to Use the CSS Selector Tester — WebdevToolbox Guide
Test a CSS selector against editable sample HTML and see every matching element highlighted, using the real browser selector engine.
How to Use the CSS Spinner / Loader Generator — WebdevToolbox Guide
Pick from several pure-CSS loading spinner styles (ring, dots, pulse, bars), customize size/color/speed, and copy ready-to-use HTML + CSS — no images or JS libraries.
How to Use the Duration Calculator — WebdevToolbox Guide
Add or subtract a list of HH:MM:SS time durations — like video clip lengths or work time logs — and get the running total in HH:MM:SS, total seconds, and decimal hours.
How to Use the Emoji Picker — WebdevToolbox Guide
Search and browse emoji by name or keyword, click to copy — with a recently-used list saved in your browser.
How to Use the File Size Converter — WebdevToolbox Guide
Convert a data size between bytes, KB/MB/GB/TB and their binary (KiB/MiB/GiB/TiB) equivalents, showing both the decimal (SI) and binary (IEC) systems side by side.
How to Use the Hreflang Tag Generator — WebdevToolbox Guide
Build a set of <link rel="alternate" hreflang> tags for international/multilingual SEO from a list of language codes and URLs, with validation for common mistakes.
How to Use the Leap Year Checker — WebdevToolbox Guide
Check whether any year is a leap year under the Gregorian calendar rule, with a plain-English explanation of why, plus a list of nearby leap years.
How to Use the Markdown TOC Generator — WebdevToolbox Guide
Paste markdown with headings and generate a GitHub-style table of contents with anchor links, in bulleted or numbered format.
How to Use the robots.txt Tester — WebdevToolbox Guide
Paste a robots.txt file and test whether a specific URL path is allowed or disallowed for a given crawler user-agent, following real precedence rules.
How to Use the Syllable Counter — WebdevToolbox Guide
Count syllables per word and in total for any English text, using a vowel-group heuristic algorithm, with a per-word breakdown.
How to Use the CSS Text Shadow Generator — WebdevToolbox Guide
Visually build single or multi-layer CSS text-shadow values with live preview, adjustable offset/blur/color per layer, and copyable CSS.
How to Use the Title Case Converter — WebdevToolbox Guide
Convert text to proper title case following real style-guide rules (AP or Chicago), correctly lowercasing articles, conjunctions, and short prepositions unless they start or end the title.
How to Use the Week Number Calculator — WebdevToolbox Guide
Find the ISO 8601 week number for any date, plus its ISO week year, day-of-year, and the exact Monday–Sunday range of that week.
How to Use the Word Scrambler — WebdevToolbox Guide
Scramble the letters within each word of your text for word puzzles, anagram games, or 'can you still read this?' demonstrations, with an option to keep first/last letters fixed.
How to Use the Age Calculator — WebdevToolbox Guide
Calculate exact age in years, months, and days from a date of birth, plus total days lived and days until your next birthday.
How to Use the iCal (.ics) Event Generator — WebdevToolbox Guide
Build a valid .ics calendar file for a single event — title, date/time, location, and description — downloadable and importable into any calendar app.
How to Use the Mortgage / Loan Calculator — WebdevToolbox Guide
Calculate your monthly mortgage or loan payment, total interest, and full amortization schedule — with optional extra monthly payments.
How to Use the RSS Feed Generator — WebdevToolbox Guide
Build a valid RSS 2.0 XML feed from channel details and a list of items, with copy and download — no CMS or backend required.
How to Use the World Clock — WebdevToolbox Guide
See the current time in multiple timezones at once, with a searchable list of every IANA timezone — updates live, no server call.
How to Use the CSS Variables Extractor — WebdevToolbox Guide
Paste CSS and extract every custom property declaration and var() usage, with a report of unused and undeclared variables.
How to Use the Invoice Generator — WebdevToolbox Guide
Build a simple, printable invoice with company/client details, line items, and automatic subtotal/tax/total calculations.
How to Use the Keyword Density Checker — WebdevToolbox Guide
Analyze single-word, 2-word, and 3-word phrase frequency in a block of text — the classic on-page SEO keyword density check.
How to Use the Number to Words Converter — WebdevToolbox Guide
Convert any number into its full English word form (including currency and decimals), or convert word forms back into numbers.
How to Use the Text to Speech Reader — WebdevToolbox Guide
Paste any text and have your browser read it aloud, with voice, rate, and pitch controls, using the native Web Speech API.
How to Use the Extractive Text Summarizer — WebdevToolbox Guide
Summarize text using a transparent frequency-based sentence-scoring algorithm — no AI, just statistics you can inspect.
How to Use the Fluid Typography Calculator — WebdevToolbox Guide
Generate a CSS clamp() font-size that scales linearly between a minimum and maximum size across a viewport width range.
How to Use the JWK ⇄ PEM Key Converter — WebdevToolbox Guide
Convert between PEM-format public/private keys and JSON Web Key (JWK) format using the Web Crypto API, entirely in your browser.
How to Use the Open Graph / Social Card Preview — WebdevToolbox Guide
Preview how your page's Open Graph and Twitter Card tags render on Facebook, X/Twitter, LinkedIn, and Slack before you ship them.
How to Use the package.json Generator — WebdevToolbox Guide
Build a valid package.json from project metadata, npm scripts, and dependency lists — no syntax errors, no guessing field names.
How to Use the README Generator — WebdevToolbox Guide
Generate a structured README.md with badges, installation, usage, contributing, and license sections from your project details.
How to Use the Security Headers Analyzer — WebdevToolbox Guide
Paste raw HTTP response headers and get a checklist audit of common security headers like HSTS, CSP, and X-Frame-Options.
How to Use the Google SERP Snippet Preview — WebdevToolbox Guide
Preview how your title tag and meta description will render as a Google search result, with pixel-based truncation warnings.
How to Use the SPF / DMARC Record Generator — WebdevToolbox Guide
Build SPF and DMARC DNS TXT record strings from simple form inputs, ready to paste into your DNS zone.
How to Use the Responsive Image srcset Generator — WebdevToolbox Guide
Build a complete img srcset and sizes attribute from a base image URL pattern and a list of target widths.
How to Use the SVG Sprite Generator — WebdevToolbox Guide
Combine multiple SVG icon files into a single symbol-based sprite sheet, with ready-to-use <use> usage snippets.
How to Use the tsconfig.json Generator — WebdevToolbox Guide
Generate a tsconfig.json for Node.js (CommonJS/ESM), React/Vite, or library projects with real, recommended compiler option combinations.
How to Use the Type Scale Generator — WebdevToolbox Guide
Generate a modular typography scale (heading sizes) from a base font size and a musical/classical scale ratio, with CSS custom properties output.
How to Use the VS Code settings.json Generator — WebdevToolbox Guide
Pick common editor, formatting, and workspace settings via checkboxes and generate a ready-to-use .vscode/settings.json.
How to Use the Webhook Payload Generator — WebdevToolbox Guide
Generate realistic sample JSON payloads for GitHub, Stripe, Slack, and generic webhooks to test your receiver endpoint instantly.
How to Use the Keyboard Shortcuts Cheatsheet — WebdevToolbox Guide
Searchable reference for browser, text editing, window management, VS Code, and terminal keyboard shortcuts on Windows/Linux and Mac.
How to Use the Media Query Generator — WebdevToolbox Guide
Generate CSS media query breakpoints for mobile-first or desktop-first responsive design.
How to Use the npm Cheatsheet — WebdevToolbox Guide
Searchable reference for npm and Node.js package manager commands, with flags and real examples.
How to Use the Passphrase Generator — WebdevToolbox Guide
Generate a memorable, cryptographically random diceware-style passphrase from a curated word list, with an entropy estimate.
How to Use the SQL Join Visualizer — WebdevToolbox Guide
Visualize INNER, LEFT, RIGHT, FULL, and CROSS joins with a Venn diagram and real computed results from editable sample tables.
How to Use the vCard Generator — WebdevToolbox Guide
Build a standard vCard 3.0 contact file with a scannable QR code for instant import into any phone's contacts app.
How to Use the WiFi QR Code Generator — WebdevToolbox Guide
Generate a scannable QR code that lets phones join a WiFi network automatically, using the standard WIFI: QR payload format.
How to Use the Aspect Ratio Calculator — WebdevToolbox Guide
Calculate the missing width or height from a known dimension and aspect ratio, with common presets.
How to Use the Color Blindness Simulator — WebdevToolbox Guide
Upload an image and preview how it looks under protanopia, deuteranopia, tritanopia, and achromatopsia.
How to Use the Cubic Bezier Generator — WebdevToolbox Guide
Visually design a CSS cubic-bezier() easing curve by dragging control points, with live animation preview.
How to Use the Loan Calculator — WebdevToolbox Guide
Calculate monthly loan payments, total interest, and a full amortization schedule for any fixed-rate loan.
How to Use the Image Palette Extractor — WebdevToolbox Guide
Extract the dominant color palette from any uploaded image, with hex codes and percentage breakdown.
How to Use the Tip Calculator — WebdevToolbox Guide
Calculate tip amount and split a bill evenly between any number of people, with common tip percentage presets.
How to Use the AI Cost Calculator — WebdevToolbox Guide
Estimate LLM API costs from input/output token counts across popular models.
How to Use the API Response Diff — WebdevToolbox Guide
Compare two JSON API responses side by side and see exactly which fields changed.
How to Use the Array Methods Explorer — WebdevToolbox Guide
An interactive, live reference for JavaScript array methods — edit the input and see the real result.
How to Use the ASCII Table Reference — WebdevToolbox Guide
Searchable reference table of all 128 ASCII codes with decimal, hex, octal, binary, and character views.
How to Use the Batch Image Resizer — WebdevToolbox Guide
Upload multiple images and resize them all at once, right in your browser.
How to Use the Batch QR Code Generator — WebdevToolbox Guide
Paste multiple URLs or text values and generate a QR code for each one at once.
How to Use the Bulk URL Encoder/Decoder — WebdevToolbox Guide
Encode or decode dozens of URLs at once, one per line, entirely in your browser.
How to Use the Big-O Complexity Cheatsheet — WebdevToolbox Guide
Time and space complexity reference for common data structures and algorithms.
How to Use the Bitwise Calculator — WebdevToolbox Guide
Perform AND, OR, XOR, NOT, and shift operations on two numbers, with binary, hex, and decimal views.
How to Use the Caesar Cipher / ROT13 Tool — WebdevToolbox Guide
Encode or decode text with a Caesar cipher shift (including ROT13), with all 25 possible shifts shown for brute-forcing an unknown key.
How to Use the Changelog Generator — WebdevToolbox Guide
Paste conventional-commit-style messages and generate a Keep a Changelog formatted release section, grouped by type.
How to Use Code Screenshot — WebdevToolbox Guide
Paste code and generate a beautiful, shareable screenshot with syntax-aware coloring.
How to Use Colors to Tailwind Config — WebdevToolbox Guide
Generate a Tailwind color configuration block from a list of HEX or RGB colors.
How to Use the CORS Config Generator — WebdevToolbox Guide
Generate CORS headers and config snippets for Express, Next.js, Vite, and Nginx.
How to Use the CRC-32 Checksum Calculator — WebdevToolbox Guide
Compute the standard CRC-32 (zlib/gzip/PNG/Ethernet) checksum of text or a file.
How to Use the Credit Card Validator — WebdevToolbox Guide
Validate a card number's Luhn checksum, detect its network, and generate fake test numbers for sandbox use.
How to Use the CSP Generator — WebdevToolbox Guide
Build a Content-Security-Policy header visually with per-directive source toggles.
How to Use CSS to Tailwind — WebdevToolbox Guide
Convert raw CSS declarations into equivalent Tailwind CSS utility classes instantly.
How to Use the CSS Unit Converter — WebdevToolbox Guide
Convert between px, rem, em, pt, vw, vh, and % using a configurable root font size and viewport width.
How to Use cURL to Code — WebdevToolbox Guide
Paste a curl command and get equivalent JavaScript (fetch), Python (requests), and Node.js (https) code.
How to Use the Dependency Diagram — WebdevToolbox Guide
Paste a package.json and visualize its dependencies grouped by type with version-range analysis.
How to Use the Dockerfile Linter — WebdevToolbox Guide
Paste a Dockerfile and get static best-practice checks for unpinned base images, root user, apt cache bloat, and multi-stage build opportunities.
How to Use the EXIF Metadata Viewer — WebdevToolbox Guide
Read the EXIF metadata embedded in a JPEG photo — camera, exposure, timestamp, and GPS tags — entirely in your browser.
How to Use the File Hash Calculator — WebdevToolbox Guide
Compute the MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hash of any file directly in your browser — nothing is uploaded.
How to Use the Git Commit Message Generator — WebdevToolbox Guide
Fill in a type, scope, and description to get a formatted Conventional Commit message.
How to Use the GitHub Actions Workflow Generator — WebdevToolbox Guide
Generate a starter GitHub Actions CI workflow YAML for Node.js, Python, Go, Docker, or a static-site deploy.
How to Use the .htaccess Generator — WebdevToolbox Guide
Build a common Apache .htaccess file for HTTPS redirects, www handling, caching, gzip, security headers, and SPA routing.
How to Use HTML to JSX — WebdevToolbox Guide
Convert HTML markup into JSX-compatible syntax for React components.
How to Use the htpasswd Generator — WebdevToolbox Guide
Generate an Apache/Nginx basic-auth .htpasswd line using real, verifiable apr1-MD5 or SHA-1 hashing — entirely client-side.
How to Use the HTTP Request Builder — WebdevToolbox Guide
Visually build an HTTP request and see the real response using your browser's fetch().
How to Use the IBAN Validator — WebdevToolbox Guide
Validate an International Bank Account Number against the ISO 13616 checksum and see its country, check digits, and BBAN breakdown.
How to Use the ISBN Converter — WebdevToolbox Guide
Validate and convert between ISBN-10 and ISBN-13, with check-digit verification and hyphenated formatting.
How to Use JSON to GraphQL Schema — WebdevToolbox Guide
Generate GraphQL type definitions from a JSON object's structure.
How to Use JSON to Table — WebdevToolbox Guide
Convert a JSON array into a sortable, searchable HTML table.
How to Use JSON to TOON — WebdevToolbox Guide
Convert JSON to TOON, a compact token-oriented format that reduces token usage in LLM prompts.
How to Use the Leetspeak Converter — WebdevToolbox Guide
Convert plain text into leetspeak (1337 5p34k) with a configurable substitution intensity.
How to Use the License Generator — WebdevToolbox Guide
Generate common open-source license text (MIT, Apache 2.0, BSD 3-Clause, ISC, GPL-3.0, Unlicense) with your year and name filled in.
How to Use the Log File Analyzer — WebdevToolbox Guide
Paste nginx, Apache, or JSON logs to parse, filter, and aggregate them client-side.
How to Use the MAC Address Validator & Generator — WebdevToolbox Guide
Validate and reformat a MAC address between colon, hyphen, dot, and bare notation, decode its unicast/multicast and universal/local bits, or generate a random one.
How to Use the Meeting Time Planner — WebdevToolbox Guide
Find overlapping working hours across timezones for distributed team meetings.
How to Use the Mock Data Generator — WebdevToolbox Guide
Generate fake JSON test records — names, emails, addresses, dates, and more — from a configurable field schema.
How to Use the Nanoid & CUID Generator — WebdevToolbox Guide
Generate URL-safe unique IDs in nanoid or CUID2-style format, with configurable length and batch count.
How to Use the OAuth Flow Visualizer — WebdevToolbox Guide
An interactive, step-by-step diagram of the OAuth 2.0 Authorization Code + PKCE flow.
How to Use the package.json Analyzer — WebdevToolbox Guide
Paste a package.json and see dependency counts, scripts, and flags for unpinned versions, deprecated packages, and missing fields.
How to Use the Pig Latin Converter — WebdevToolbox Guide
Convert English text to Pig Latin using standard consonant-cluster and vowel-start rules.
How to Use the PR Description Generator — WebdevToolbox Guide
Paste a git diff and get a structured pull request description with a file summary and checklist.
How to Use the Prompt Template Builder — WebdevToolbox Guide
Build reusable AI prompt templates with {{variable}} placeholders and instant preview.
How to Use the Regex Explainer — WebdevToolbox Guide
Paste a regular expression and get a token-by-token, plain-English breakdown of what each part matches.
How to Use the Roman Numeral Converter — WebdevToolbox Guide
Convert between Arabic numbers (1-3999) and Roman numerals, with canonical-form validation in both directions.
How to Use the Semver Checker — WebdevToolbox Guide
Compare two semantic versions or check whether a version satisfies an npm-style range like ^1.2.0 or ~2.0.0.
How to Use SQL to Prisma Schema — WebdevToolbox Guide
Convert CREATE TABLE SQL statements into Prisma schema models.
How to Use the SQLite Viewer — WebdevToolbox Guide
Upload a .db/.sqlite file, browse its tables, and run SQL queries entirely in your browser.
How to Use the SRI Generator — WebdevToolbox Guide
Generate Subresource Integrity hashes for CDN-hosted JS/CSS to protect against tampering.
How to Use the SSL Certificate Decoder — WebdevToolbox Guide
Paste a PEM certificate and decode its subject, issuer, validity, and SANs.
How to Use the SVG Path Visualizer — WebdevToolbox Guide
Paste an SVG path 'd' string and see it rendered live on a grid with its bounding box.
How to Use the LLM Token Counter — WebdevToolbox Guide
Estimate token counts for GPT, Claude, and Llama-style models as you type.
How to Use the TOTP / 2FA Code Generator — WebdevToolbox Guide
Enter a Base32 secret to see the current and next TOTP code, refreshed live.
How to Use the UUID v5 Generator — WebdevToolbox Guide
Generate a deterministic, SHA-1-based UUID v5 from a namespace and name — the same input always produces the same UUID.
How to Use the VIN Decoder & Validator — WebdevToolbox Guide
Validate a 17-character Vehicle Identification Number's check digit and decode its region, model-year code, and serial segment.
How to Use the Word Frequency Analyzer — WebdevToolbox Guide
Count how often each word appears in a block of text, with stop-word filtering and a visual frequency ranking.
How to Use the CSS Specificity Calculator — WebdevToolbox Guide
Calculate and compare CSS selector specificity to debug cascade and override issues.
How to Use the Markdown Table Generator — WebdevToolbox Guide
Convert CSV, TSV, or pasted spreadsheet data into a formatted Markdown table.
How to Use the Random User Generator — WebdevToolbox Guide
Generate realistic random user profiles using the randomuser.me API.
How to Use the Sitemap Generator — WebdevToolbox Guide
Generate an XML sitemap from a list of URLs for better search engine indexing.
How to Use the Web App Manifest Generator — WebdevToolbox Guide
Build a PWA manifest.webmanifest file with icons, theme colors, and display mode.
How to Use the JSON Schema Generator — WebdevToolbox Guide
Generate a JSON Schema from any JSON document automatically.
How to Use the Meta Tag Generator — WebdevToolbox Guide
Generate HTML meta tags for SEO, Open Graph, and Twitter Cards.
How to Use the Glassmorphism Generator — WebdevToolbox Guide
Create beautiful glassmorphism effects with backdrop-filter and live preview.
How to Use the Basic Auth Generator — WebdevToolbox Guide
Generate HTTP Basic Authentication headers from username and password.
How to Use the Keycode Info — WebdevToolbox Guide
Press any key to see its keyCode, key name, code, and event properties.
How to Use the JSON Diff — WebdevToolbox Guide
Compare two JSON objects and visualize the differences.
How to Use the SQL Formatter — WebdevToolbox Guide
Format and beautify SQL queries for readability.
How to Use the JSON Viewer — WebdevToolbox Guide
Interactive collapsible tree view for exploring and navigating JSON data.
How to Use the XML to JSON — WebdevToolbox Guide
Convert XML documents to JSON format with attribute and namespace support.
How to Use the XPath Tester — WebdevToolbox Guide
Test XPath expressions against XML documents and see matching nodes.
How to Use the SVG to CSS — WebdevToolbox Guide
Convert SVG code to CSS background-image data URI for inline use.
How to Use the Box Shadow Generator — WebdevToolbox Guide
Visually build CSS box shadows with live preview and code output.
How to Use the Slug Generator — WebdevToolbox Guide
Generate URL-friendly slugs from any text string.
How to Use the UUID Generator — WebdevToolbox Guide
Generate RFC 4122 UUIDs (v1, v4, v5, v7) individually or in bulk.
How to Use the robots.txt Generator — WebdevToolbox Guide
Generate a robots.txt file for your website with custom rules.
How to Use the Image Cropper — WebdevToolbox Guide
Crop images with precise pixel controls and aspect ratio presets — no upload needed.
How to Use the Color Picker & Converter — WebdevToolbox Guide
Pick colors and convert between HEX, RGB, HSL, HSV, and CMYK — with color harmonies and palette export.
How to Use the CSS Grid Generator — WebdevToolbox Guide
Build CSS Grid layouts visually with track sizing, gaps, template areas, and copyable generated CSS.
How to Use the ULID Generator — WebdevToolbox Guide
Generate Universally Unique Lexicographically Sortable Identifiers (ULIDs).
How to Use the Base64 Decoder — WebdevToolbox Guide
Decode Base64 strings back to plain text or binary data instantly in your browser.
How to Use the Base64 Encoder / Decoder — WebdevToolbox Guide
Encode text or files to Base64 format and decode Base64 strings back to plain text.
How to Use the SVG Wave Generator — WebdevToolbox Guide
Generate beautiful SVG wave shapes for website backgrounds and sections.
How to Use the Markdown to HTML — WebdevToolbox Guide
Convert Markdown to clean HTML markup ready to embed.
How to Use the HTTP Headers Reference — WebdevToolbox Guide
Complete reference for HTTP request and response headers.
How to Use the Typography Scale Generator — WebdevToolbox Guide
Build a modular type scale from a base font size and ratio, then copy CSS custom properties for consistent typography.
How to Use the XML Validator — WebdevToolbox Guide
Validate XML documents and get detailed error messages with line numbers.
How to Use the Sort Lines — WebdevToolbox Guide
Sort lines alphabetically, numerically, reverse or randomly.
How to Use the .gitignore Generator — WebdevToolbox Guide
Generate .gitignore files for any language, framework, or tool.
How to Use the Markdown Preview — WebdevToolbox Guide
Write Markdown and preview the rendered HTML output in real-time.
How to Use the XML Formatter — WebdevToolbox Guide
Format, beautify, and minify XML documents with syntax validation.
How to Use the Placeholder Image Generator — WebdevToolbox Guide
Generate SVG placeholder images with custom size, color, and text — no external service.
How to Use the SVG Blob Generator — WebdevToolbox Guide
Generate random organic SVG blob shapes with adjustable complexity, live preview, and copyable SVG or path data.
How to Use the Barcode Generator — WebdevToolbox Guide
Generate Code 128, EAN-13, and Code 39 barcodes as SVG in the browser.
How to Use the CSS Properties Reference — WebdevToolbox Guide
Complete reference for CSS properties with browser compatibility notes.
How to Use the JSON Formatter — WebdevToolbox Guide
Format and beautify JSON data with syntax highlighting and collapsible tree view.
How to Use the systemd Cheatsheet — WebdevToolbox Guide
A quick systemd reference for systemctl, journalctl, unit files, timers, targets, and troubleshooting commands.
How to Use the Math Expression Evaluator — WebdevToolbox Guide
Evaluate mathematical expressions safely — supports arithmetic, trig, logs, sqrt, and more.
How to Use the Chmod Calculator — WebdevToolbox Guide
Calculate Unix file permissions with a visual toggle grid and symbolic/octal notation.
How to Use the Date Difference Calculator — WebdevToolbox Guide
Calculate the exact difference between two dates in days, months, years, and more.
How to Use the JSON to YAML — WebdevToolbox Guide
Convert JSON data to YAML format instantly.
How to Use the npm / Yarn / pnpm Cheatsheet — WebdevToolbox Guide
A practical package manager reference for installing dependencies, scripts, workspaces, publishing, lockfiles, and audits.
How to Use the CIDR Calculator — WebdevToolbox Guide
Calculate IP ranges, subnet masks, and broadcast addresses from CIDR notation.
How to Use the Data Encryptor — WebdevToolbox Guide
Encrypt and decrypt text using AES-256-GCM with PBKDF2 key derivation — all client-side.
How to Use the SVG Optimizer — WebdevToolbox Guide
Optimize and minify SVG files by removing unnecessary attributes and whitespace.
How to Use the Stopwatch — WebdevToolbox Guide
A precise stopwatch with lap tracking, fastest/slowest lap highlighting.
How to Use the Habit Tracker — WebdevToolbox Guide
Track daily habits with a weekly grid, streak counts, and local browser storage.
How to Use the Countdown Timer — WebdevToolbox Guide
Count down to a target date/time or a set duration, with quick-add time buttons.
How to Use the HTTP Status Codes — WebdevToolbox Guide
Complete reference for all HTTP status codes with descriptions and use cases.
How to Use the Random Name Picker — WebdevToolbox Guide
Randomly pick one or more names from a list, with exclusion and history tracking.
How to Use the Base58 Encoder / Decoder — WebdevToolbox Guide
Encode and decode data using Bitcoin Base58 and Base58Check encoding.
How to Use the Decision Maker — WebdevToolbox Guide
Add options and randomly spin to pick a winner — great for quick decisions.
How to Use the Data URL Generator — WebdevToolbox Guide
Convert files to Base64 data URLs and decode data URLs back to files.
How to Use the Postman Collection Generator — WebdevToolbox Guide
Build a Postman Collection v2.1 JSON export with requests, headers, and folders.
How to Use the CSV Viewer — WebdevToolbox Guide
View and explore CSV data in a formatted, searchable table.
How to Use the Protobuf to TypeScript — WebdevToolbox Guide
Convert Protocol Buffer .proto message and enum definitions into TypeScript interfaces.
How to Use the VS Code Cheatsheet — WebdevToolbox Guide
A quick VS Code shortcut reference for editing, navigation, multi-cursor work, search, debugging, and terminal commands.
How to Use the GraphQL Schema Generator — WebdevToolbox Guide
Visually build GraphQL types, queries, and mutations into valid SDL output.
How to Use the JavaScript Formatter — WebdevToolbox Guide
Format and beautify JavaScript code with proper indentation and structure.
How to Use the OpenAPI/Swagger Editor — WebdevToolbox Guide
Edit and validate OpenAPI specs with a live path/method summary and prettify tool.
How to Use the ESLint Config Generator — WebdevToolbox Guide
Build an .eslintrc.json configuration with environments, extends, and custom rules.
How to Use the Prettier Config Generator — WebdevToolbox Guide
Build a .prettierrc configuration with all common formatting options.
How to Use the .editorconfig Generator — WebdevToolbox Guide
Generate an .editorconfig file with root settings and per-file-type overrides.
How to Use the Makefile Generator — WebdevToolbox Guide
Build a Makefile with targets, prerequisites, and commands using correct tab indentation.
How to Use the .env File Generator — WebdevToolbox Guide
Build .env and .env.example files from common presets or custom key-value pairs.
How to Use the Hash Generator — WebdevToolbox Guide
Generate MD5, SHA-1, SHA-256, SHA-512, and SHA-3 hashes from text or files.
How to Use the Nginx Config Generator — WebdevToolbox Guide
Generate an Nginx server block for static sites or reverse proxies.
How to Use the CSS Cursors Reference — WebdevToolbox Guide
Interactive reference for all CSS cursor types with live hover demo.
How to Use the Docker Compose Generator — WebdevToolbox Guide
Build a docker-compose.yml with multiple services, ports, volumes, and dependencies.
How to Use the Dockerfile Generator — WebdevToolbox Guide
Build a Dockerfile visually with base image presets, COPY/RUN/ENV rows, and multi-stage builds.
How to Use the Emoji Remover — WebdevToolbox Guide
Strip emoji characters from text and see a summary of what was removed.
How to Use the Vim / Neovim Cheatsheet — WebdevToolbox Guide
A practical Vim and Neovim reference for modes, movement, editing, visual mode, search, registers, macros, and window management.
How to Use the Anagram Finder — WebdevToolbox Guide
Check if two words are anagrams, or find anagrams of a word from a built-in word list.
How to Use the Zalgo Text Generator — WebdevToolbox Guide
Generate cursed glitch text using combining Unicode diacritical marks, or remove it.
How to Use the Text to Binary Converter — WebdevToolbox Guide
Convert text to binary and binary back to text, with full UTF-8 support.
How to Use the Unicode Lookup — WebdevToolbox Guide
Look up Unicode code points, search by character name, and convert between encodings.
How to Use the Palindrome Checker — WebdevToolbox Guide
Check if a phrase is a palindrome and find palindromic substrings within text.
How to Use the Text Reverser — WebdevToolbox Guide
Reverse text by character, word order, per-word letters, or line order.
How to Use the Keyword Extractor — WebdevToolbox Guide
Extract and rank the most frequent keywords and phrases from any text.
How to Use the Readability Score Checker — WebdevToolbox Guide
Calculate Flesch Reading Ease and Flesch-Kincaid Grade Level for any text.
How to Use the Font Stack Builder — WebdevToolbox Guide
Build a CSS font-family fallback stack from presets or custom fonts.
How to Use the Font Pairing Previewer — WebdevToolbox Guide
Preview heading and body font combinations with curated pairing presets.
How to Use the HTTP Playground — WebdevToolbox Guide
Build and visualize raw HTTP requests — see exactly what your request looks like on the wire.
How to Use the Font Size Converter — WebdevToolbox Guide
Convert font sizes between px, rem, em, pt, and percent, with a quick reference table.
How to Use the Flexbox Generator — WebdevToolbox Guide
Build CSS flexbox layouts visually with live code output.
How to Use the PowerShell Cheatsheet — WebdevToolbox Guide
A quick PowerShell reference for cmdlets, pipelines, variables, control flow, operators, and file system navigation.
How to Use the Unicode Text Converter — WebdevToolbox Guide
Convert plain text into bold, italic, script, and other stylized Unicode text variants.
How to Use the Pomodoro Timer — WebdevToolbox Guide
Focus timer with 25-minute work sessions, short breaks, and long breaks.
How to Use the JSON to TOML — WebdevToolbox Guide
Convert JSON data to TOML configuration format.
How to Use the Docker Cheatsheet — WebdevToolbox Guide
Complete reference for Docker CLI commands — containers, images, volumes, networks, and Compose.
How to Use the HMAC Generator — WebdevToolbox Guide
Generate HMAC signatures using SHA-256, SHA-512, or MD5 with a secret key.
How to Use the Unit Converter — WebdevToolbox Guide
Convert between units of length, weight, temperature, area, volume, speed, and more.
How to Use the Nginx Cheatsheet — WebdevToolbox Guide
A practical Nginx reference for server blocks, location matching, proxy_pass, SSL/TLS setup, rewrites, and common directives.
How to Use the Fraction Calculator — WebdevToolbox Guide
Add, subtract, multiply, and divide fractions, and simplify to lowest terms.
How to Use the BMI Calculator — WebdevToolbox Guide
Calculate Body Mass Index from height and weight, with metric and imperial units.
How to Use the Pythagorean Theorem Calculator — WebdevToolbox Guide
Solve right triangles — find the missing side, area, perimeter, and angles.
How to Use the Matrix Calculator — WebdevToolbox Guide
Add, subtract, multiply, transpose, and invert matrices with determinant calculation.
How to Use the XML to YAML — WebdevToolbox Guide
Convert XML documents to YAML format.
How to Use the Random Number Generator — WebdevToolbox Guide
Generate random integers or decimals within a range, with optional uniqueness and precision controls.
How to Use the Scientific Calculator — WebdevToolbox Guide
A full scientific calculator with trig, logs, powers, and memory functions.
How to Use the Statistics Calculator — WebdevToolbox Guide
Compute mean, median, mode, variance, standard deviation, and quartiles from a list of numbers.
How to Use the HTML Minifier — WebdevToolbox Guide
Minify HTML by removing whitespace, comments, and optional tags.
How to Use the Percentage Calculator — WebdevToolbox Guide
Calculate percentages, percent change, and percent increase/decrease instantly.
How to Use the Base64 Image Viewer — WebdevToolbox Guide
Paste a base64 string or data URL to preview, inspect, and download the decoded image.
How to Use the SVG to JSX — WebdevToolbox Guide
Convert raw SVG markup into a ready-to-use React JSX component.
How to Use the Ruby Cheatsheet — WebdevToolbox Guide
A quick Ruby reference for syntax, blocks, procs, lambdas, arrays, hashes, enumerable methods, and symbols.
How to Use the SVG to PNG — WebdevToolbox Guide
Convert SVG markup or files to PNG images with custom output size.
How to Use the Favicon Generator — WebdevToolbox Guide
Generate a full favicon set (16x16 to 512x512) from any source image, with ready-to-use HTML tags.
How to Use the YAML Formatter — WebdevToolbox Guide
Format and validate YAML configuration files.
How to Use the Image Format Converter — WebdevToolbox Guide
Convert images between PNG, JPEG, and WebP formats directly in your browser.
How to Use the Color Contrast Checker — WebdevToolbox Guide
Check WCAG 2.1 AA/AAA color contrast ratios for foreground and background pairs.
How to Use the Image Resizer — WebdevToolbox Guide
Resize images to exact dimensions or presets entirely in your browser, with format and quality control.
How to Use the Mesh Gradient Generator — WebdevToolbox Guide
Generate colorful multi-point mesh gradient backgrounds with live preview.
How to Use the Neumorphism Generator — WebdevToolbox Guide
Generate soft-UI neumorphic box-shadow effects with live preview and code output.
How to Use the CSS Transform Generator — WebdevToolbox Guide
Visually build CSS transforms — translate, rotate, scale, skew — with live preview.
How to Use the HTML Sanitizer — WebdevToolbox Guide
Remove unsafe HTML tags and attributes while keeping safe markup.
How to Use the CSS Filter Generator — WebdevToolbox Guide
Visually build CSS filter effects — blur, brightness, contrast, and more — with live preview.
How to Use the CSS Clip-Path Generator — WebdevToolbox Guide
Visually build CSS clip-path shapes with draggable points and live preview.
How to Use the PHP Cheatsheet — WebdevToolbox Guide
A searchable PHP reference for syntax, arrays, strings, superglobals, OOP, Composer conventions, and match expressions.
How to Use the QR Code Generator — WebdevToolbox Guide
Generate QR codes for URLs, text, contact info, and more with custom sizes.
How to Use the Bash Cheatsheet — WebdevToolbox Guide
Bash scripting reference — variables, arrays, loops, functions, and redirection.
How to Use the Terraform Cheatsheet — WebdevToolbox Guide
Terraform/OpenTofu reference — CLI commands, resource blocks, variables, and state management.
How to Use the Kubernetes Cheatsheet — WebdevToolbox Guide
kubectl reference — resources, deployments, rollouts, debugging, and troubleshooting.
How to Use the SEO Cheatsheet — WebdevToolbox Guide
SEO reference — meta tags, Open Graph, Twitter Cards, structured data, and Core Web Vitals.
How to Use the ARIA Cheatsheet — WebdevToolbox Guide
Accessibility reference — ARIA roles, states, properties, and common accessible patterns.
How to Use the CSV to SQL — WebdevToolbox Guide
Generate SQL INSERT statements from CSV data.
How to Use the SVG Cheatsheet — WebdevToolbox Guide
SVG reference — shapes, path data commands, gradients, transforms, filters, and animation.
How to Use the HTML Validator — WebdevToolbox Guide
Validate HTML structure for common errors, missing attributes, and accessibility issues.
How to Use the HTML5 Cheatsheet — WebdevToolbox Guide
HTML5 reference — semantic elements, forms, media, global attributes, and basic APIs.
How to Use the RSA Key Pair Generator — WebdevToolbox Guide
Generate RSA public/private key pairs (2048/4096-bit) in PEM format using Web Crypto API.
How to Use the Color Information — WebdevToolbox Guide
Get complete color info: HEX, RGB, HSL, HSV, CMYK, and color harmonies.
How to Use the C# Cheatsheet — WebdevToolbox Guide
A practical C# reference for syntax, LINQ, async/await, records, pattern matching, and nullable reference types.
How to Use the CSS Animations Cheatsheet — WebdevToolbox Guide
Reference for CSS transitions, keyframe animations, timing functions, and common patterns.
How to Use the CSS Grid Cheatsheet — WebdevToolbox Guide
CSS Grid reference — template columns/rows, placement, alignment, and layout patterns.
How to Use the CSS Flexbox Cheatsheet — WebdevToolbox Guide
Flexbox reference — container/item properties, alignment, and common layout patterns.
How to Use the Django Cheatsheet — WebdevToolbox Guide
Django reference — models, migrations, views, URLs, templates, forms, and the ORM.
How to Use the Express.js Cheatsheet — WebdevToolbox Guide
Express reference — routing, middleware, request/response objects, and error handling.
How to Use the Angular Cheatsheet — WebdevToolbox Guide
Angular reference — components, data binding, directives, services, and RxJS basics.
How to Use the HTML Entity Encoder — WebdevToolbox Guide
Encode and decode HTML entities like &, <, >, and more.
How to Use the Tailwind CSS Cheatsheet — WebdevToolbox Guide
Utility class reference for layout, spacing, typography, colors, and responsive design.
How to Use the Vue Cheatsheet — WebdevToolbox Guide
Vue 3 reference — template syntax, Composition API, components, slots, and routing.
How to Use the Next.js Cheatsheet — WebdevToolbox Guide
App Router reference — routing, data fetching, server actions, middleware, and rendering.
How to Use the YAML to JSON — WebdevToolbox Guide
Convert YAML to JSON format with one click.
How to Use the React Cheatsheet — WebdevToolbox Guide
Quick reference for React hooks, components, props, context, and performance patterns.
How to Use the Git Advanced Cheatsheet — WebdevToolbox Guide
Advanced Git reference — interactive rebase, reflog, bisect, worktrees, and submodules.
How to Use the Java Cheatsheet — WebdevToolbox Guide
A searchable Java reference covering syntax basics, collections, streams, generics, records, switch expressions, and common APIs.
How to Use the JSON Validator — WebdevToolbox Guide
Validate JSON syntax and get descriptive error messages with line numbers.
How to Use the SQL Cheatsheet — WebdevToolbox Guide
SQL reference — joins, window functions, CTEs, aggregates, and transactions.
How to Use the Rust Cheatsheet — WebdevToolbox Guide
Rust reference — ownership, borrowing, traits, pattern matching, and iterators.
How to Use the Go Cheatsheet — WebdevToolbox Guide
Go language reference — structs, interfaces, goroutines, channels, and generics.
How to Use the Python Cheatsheet — WebdevToolbox Guide
Python 3 reference — comprehensions, decorators, error handling, and modern syntax.
How to Use the TypeScript Cheatsheet — WebdevToolbox Guide
TypeScript reference covering types, generics, utility types, and type guards.
How to Use the JavaScript Cheatsheet — WebdevToolbox Guide
Modern JavaScript ES6+ syntax reference — destructuring, async/await, arrays, classes, and more.
How to Use the Quoted-Printable Encoder / Decoder — WebdevToolbox Guide
Encode and decode Quoted-Printable text as used in email MIME content.
How to Use the Punycode Converter — WebdevToolbox Guide
Convert internationalized domain names (IDN) to and from Punycode (ACE).
How to Use the ROT13 / ROT47 Cipher — WebdevToolbox Guide
Encode and decode text using the ROT13 and ROT47 substitution ciphers.
How to Use the Morse Code Converter — WebdevToolbox Guide
Convert text to Morse code and back using the international Morse alphabet.
How to Use the Base85 (Ascii85) Encoder / Decoder — WebdevToolbox Guide
Encode and decode data using Ascii85/Base85, as used in PDF and PostScript.
How to Use the Base62 Encoder / Decoder — WebdevToolbox Guide
Encode and decode data using Base62 — ideal for URL-safe short IDs.
How to Use the Base32 Encoder / Decoder — WebdevToolbox Guide
Encode and decode data using RFC 4648 Base32 — used in TOTP secrets and DNSSEC.
How to Use the SQL to CSV — WebdevToolbox Guide
Convert SQL INSERT statements into CSV data.
How to Use the SQL to JSON — WebdevToolbox Guide
Convert SQL INSERT statements into a JSON array of row objects.
How to Use the CSV to XML — WebdevToolbox Guide
Convert CSV data into XML markup.
How to Use the CSV to TOML — WebdevToolbox Guide
Convert CSV data into a TOML array of tables.
How to Use the CSS Formatter — WebdevToolbox Guide
Format and beautify CSS code with consistent indentation and spacing.
How to Use the CSV to YAML — WebdevToolbox Guide
Convert CSV data into structured YAML.
How to Use the YAML to XML — WebdevToolbox Guide
Convert YAML documents to XML markup.
How to Use the YAML to CSV — WebdevToolbox Guide
Convert an array of YAML records into CSV format.
How to Use the HTML to Markdown — WebdevToolbox Guide
Convert HTML markup to clean Markdown, including tables and lists.
How to Use the Markdown to Text — WebdevToolbox Guide
Strip Markdown syntax and convert it to clean plain text.
How to Use the Image Compressor — WebdevToolbox Guide
Compress JPEG, PNG, and WebP images client-side using the Canvas API.
How to Use the JSON to .env — WebdevToolbox Guide
Convert JSON data to .env / properties style KEY=value lines.
How to Use the YAML to TOML — WebdevToolbox Guide
Convert YAML configuration files to TOML format.
How to Use the JSON to INI — WebdevToolbox Guide
Convert JSON data to INI configuration file format.
How to Use the JSONPath Tester — WebdevToolbox Guide
Test JSONPath expressions against JSON data and see results instantly.
How to Use the JSON to XML — WebdevToolbox Guide
Convert JSON data to XML markup with configurable root and pretty-printing.
How to Use the Hex Converter — WebdevToolbox Guide
Convert between hexadecimal, decimal, binary, and octal number systems.
How to Use the JSON to MySQL — WebdevToolbox Guide
Generate a MySQL CREATE TABLE statement from JSON data.
How to Use the Remove Duplicate Lines — WebdevToolbox Guide
Remove duplicate lines from text, keeping unique lines only.
How to Use the JSON to OpenAPI Schema — WebdevToolbox Guide
Generate an OpenAPI Schema Object from JSON data.
How to Use the JSON to Yup Schema — WebdevToolbox Guide
Generate Yup validation schemas from JSON data.
How to Use the JSON to PHP — WebdevToolbox Guide
Generate PHP 8+ typed classes with fromArray hydration from JSON data.
How to Use the JSON to Java — WebdevToolbox Guide
Generate Java records with Jackson annotations from JSON data.
How to Use the JSON to Zod Schema — WebdevToolbox Guide
Generate Zod validation schemas and TypeScript types from JSON data.
How to Use the Device Information — WebdevToolbox Guide
View detailed browser, device, screen, and hardware information.
How to Use the IP Address Validator — WebdevToolbox Guide
Validate IPv4 and IPv6 addresses and get detailed information.
How to Use the JSON to Dart — WebdevToolbox Guide
Generate Dart classes with fromJson/toJson helpers from JSON data.
How to Use the JSON to C# — WebdevToolbox Guide
Generate C# records or classes with JsonPropertyName attributes from JSON data.
How to Use the JSON to Swift — WebdevToolbox Guide
Generate Swift Codable structs from JSON data.
How to Use the JSON to Kotlin — WebdevToolbox Guide
Generate Kotlin data classes with Gson annotations from JSON data.
How to Use the Password Generator — WebdevToolbox Guide
Generate strong, random passwords with configurable length and character sets.
How to Use the JSON to Rust — WebdevToolbox Guide
Generate Rust structs with serde derive attributes from JSON data.
How to Use the JSON to Python — WebdevToolbox Guide
Generate Python TypedDict or dataclass definitions from JSON data.
How to Use the Diff Checker — WebdevToolbox Guide
Compare two text blocks side by side and highlight the differences.
How to Use the XML Minifier — WebdevToolbox Guide
Minify XML by removing whitespace and comments to reduce file size.
How to Use the JSON to TypeScript — WebdevToolbox Guide
Generate TypeScript interfaces and types from JSON data.
How to Use the Port Reference — WebdevToolbox Guide
Look up well-known TCP/UDP ports and their associated services.
How to Use the Regex Cheatsheet — WebdevToolbox Guide
Quick reference for regular expression syntax, flags, and patterns.
How to Use the Number Base Converter — WebdevToolbox Guide
Convert numbers between binary, octal, decimal, hex, and any base from 2–36.
How to Use the Case Converter — WebdevToolbox Guide
Convert text between camelCase, snake_case, PascalCase, UPPER_CASE, kebab-case, and more.
How to Use the String Inspector — WebdevToolbox Guide
Deep-inspect any string: byte length, entropy, character types, encoding, line endings.
How to Use the QR Code Scanner — WebdevToolbox Guide
Scan QR codes using your device camera or upload an image.
How to Use the Cron Expression Builder — WebdevToolbox Guide
Build and parse cron expressions with a visual editor and next-run preview.
How to Use the CSS Gradient Builder — WebdevToolbox Guide
Create CSS linear, radial, and conic gradients visually with full CSS output and copy.
How to Use the Find & Replace — WebdevToolbox Guide
Bulk find and replace text with support for regex and case sensitivity.
How to Use the REST Client — WebdevToolbox Guide
Make HTTP requests directly from your browser — set method, URL, headers, and body.
How to Use the Color Palette Generator — WebdevToolbox Guide
Generate beautiful color palettes from a base color — shades, tints, complements, and harmonies.
How to Use the JavaScript Minifier — WebdevToolbox Guide
Minify JavaScript code for production by removing whitespace and comments.
How to Use the JWT Decoder — WebdevToolbox Guide
Decode and inspect JWT tokens — header, payload, and signature — without verification.
How to Use the JSON to Go Struct — WebdevToolbox Guide
Generate Go struct definitions from JSON data.
How to Use the TOML to JSON — WebdevToolbox Guide
Convert TOML configuration files to JSON format.
How to Use the TOML to YAML — WebdevToolbox Guide
Convert TOML configuration files to YAML format.
How to Use the ASCII Art Text Generator — WebdevToolbox Guide
Convert text to ASCII art using block character fonts.
How to Use the Regex Tester — WebdevToolbox Guide
Test regular expressions with real-time match highlighting, flags, and capture groups.
How to Use the URL Encoder / Decoder — WebdevToolbox Guide
Percent-encode and decode URLs and query string parameters.
How to Use the Border Radius Generator — WebdevToolbox Guide
Visually design CSS border-radius shapes with a live preview.
How to Use the HTML Formatter — WebdevToolbox Guide
Format and beautify HTML markup with proper indentation.
How to Use the QueryString Parser — WebdevToolbox Guide
Parse and edit URL query strings with key-value table view.
How to Use the bcrypt Generator — WebdevToolbox Guide
Hash and verify passwords using the bcrypt algorithm securely in the browser.
How to Use the JWT Builder — WebdevToolbox Guide
Create and sign JWT tokens — set header, payload, and secret to generate a valid token.
How to Use the Unix Timestamp Converter — WebdevToolbox Guide
Convert between Unix timestamps and human-readable dates in any timezone.
How to Use the User Agent Parser — WebdevToolbox Guide
Parse User-Agent strings to detect browser, OS, device type, and engine.
How to Use the Git Cheatsheet — WebdevToolbox Guide
Essential Git commands with explanations, examples, and quick copy.
How to Use the Lorem Ipsum Generator — WebdevToolbox Guide
Generate placeholder lorem ipsum text in paragraphs, words, or lists.
How to Use the Structured Data Generator — WebdevToolbox Guide
Generate JSON-LD structured data markup for articles, products, FAQs, and more.
How to Use the JSON Minifier — WebdevToolbox Guide
Minify and compress JSON by removing all whitespace.
How to Use the Linux Commands Reference — WebdevToolbox Guide
Searchable reference for essential Linux/Unix commands with examples, flags, and descriptions.
How to Use the Timezone Converter — WebdevToolbox Guide
Convert times between any two timezones with DST awareness.
How to Use the CSS Minifier — WebdevToolbox Guide
Minify CSS by removing comments, whitespace, and redundant rules.
How to Use the TOML Formatter — WebdevToolbox Guide
Format, validate, and minify TOML configuration files.
The Timestamp, the Cron, and the Timezone: Mastering Date and Time in Development
Date and time bugs are among the most common and most confusing in software. WebdevToolbox's datetime suite gives you the converters, calculators, and builders you need to work with time confidently.
From CSS Gradients to Glassmorphism: A Complete Guide to WebdevToolbox's CSS Tools
CSS is notoriously tricky to write by hand. WebdevToolbox's CSS suite gives you visual editors, live previews, and code output — so you can design confidently and ship faster.
How to Use the CSV to JSON — WebdevToolbox Guide
Convert CSV files or data to JSON arrays.
How to Use the CSS Triangle Generator — WebdevToolbox Guide
Generate pure CSS triangles using the border trick, with live preview.
Stop Switching Tabs: How a Unified WebdevToolbox Improves Focus and Flow
Context switching between a dozen tool websites every day is a productivity drain developers have learned to tolerate. It does not have to be this way.
How to Use the Word Counter — WebdevToolbox Guide
Count words, characters, sentences, paragraphs, and reading time.
Developer Security Tools: Hashing, Encryption, UUIDs, and Passwords — All Client-Side
Security tooling is where privacy matters most. WebdevToolbox's security suite runs entirely in your browser — no keys, no secrets, and no sensitive data ever sent over the wire.
How to Use the Dummy JSON Generator — WebdevToolbox Guide
Generate realistic fake JSON data for API mocking and testing.
How to Use the cURL Builder — WebdevToolbox Guide
Build cURL commands visually — set method, headers, auth, body, and options with a live cURL output.
How to Use the HTML Preview — WebdevToolbox Guide
Write HTML and instantly preview the rendered output in a sandboxed frame.
How to Use the BIP39 Passphrase Generator — WebdevToolbox Guide
Generate BIP39 mnemonic seed phrases (12–24 words) for cryptocurrency wallets.
How to Use the Random String Generator — WebdevToolbox Guide
Generate cryptographically secure random strings, tokens, and API keys.
How to Use the MIME Types Reference — WebdevToolbox Guide
Search and browse all MIME types and their associated file extensions.
How to Use the JSON to CSV — WebdevToolbox Guide
Convert JSON arrays to CSV format, ready to open in Excel.
How to Use the Password Strength Checker — WebdevToolbox Guide
Check the strength of a password using entropy analysis and common patterns.
How to Use the URL Parser — WebdevToolbox Guide
Parse any URL into its components: protocol, host, path, query params, and hash.
How to Use the HTML to Text — WebdevToolbox Guide
Extract plain text from HTML, preserving structure and optionally converting links.
How to Use the Prime Number Tools — WebdevToolbox Guide
Check if a number is prime, find primes up to N, prime factorization, and nearest prime finder.
Ready to try the tools?
590+ free browser-based developer tools. All client-side, no signup required.
Browse all tools