All tools
113 browser-based utilities. Filter by what you’re trying to do, or scroll to browse by category. Looking for games? Visit the games hub →
- .env File ParserParse a .env file and see it as a JSON object. Handles comments, quoted values, escape sequences, an
- Base ConverterConvert numbers between binary, octal, decimal, and hexadecimal. Supports huge numbers via BigInt. H
- Credit Card ValidatorValidate credit card numbers with the Luhn algorithm and detect the brand: Visa, Mastercard, America
- Cron BuilderPick a preset or enter your own fields to build a cron expression. Includes a plain-English explaine
- CSS Beautifier & MinifierBeautify minified CSS with proper indentation, or minify pretty CSS to a single line. Preserves comm
- CSV ValidatorPaste any CSV to check for column-count mismatches, unclosed quotes, and delimiter issues. Auto-dete
- cURL to fetch() ConverterPaste a curl command and get a JavaScript fetch() equivalent. Handles method, headers, JSON and form
- Hash GeneratorInstantly compute MD5 and SHA-family hashes of any text. All hashing happens in your browser — nothi
- HTML Beautifier & MinifierBeautify minified HTML with proper indentation, or minify pretty HTML for production. Preserves scri
- HTTP Headers ReferenceEvery common HTTP header explained, grouped by purpose. Searchable by name or keyword. Includes exam
- HTTP Status CodesEvery HTTP status code you need to know, grouped by category, with plain-English descriptions. Searc
- IBAN ValidatorValidate International Bank Account Numbers (IBAN) using the ISO 13616 mod-97 checksum. Detects coun
- JSON DiffCompare two JSON documents and see added, removed, and changed keys with dot-path notation. Ignores
- JSON FormatterFormat, validate, and minify JSON in your browser. See parse errors with line/column. Optional key s
- JSON String EscapeEscape any text for safe embedding as a JSON string, or unescape a JSON string back to plain text. H
- JSON to TypeScriptPaste a JSON blob and get TypeScript interface declarations. Handles nested objects, arrays, and uni
- JWT DecoderPaste any JSON Web Token (JWT) to see the decoded header, payload, and expiration status. Everything
- NRIC / FIN Generator & ValidatorGenerate structurally valid Singapore NRIC and FIN numbers for test data. Supports S, T, F, G, and M
- Password GeneratorGenerate strong random passwords with configurable length, character sets, and ambiguity-avoidance.
- Playwright / Cypress Test GeneratorBuild end-to-end test scripts visually. Add steps — navigate, click, fill, assert — and get ready-to
- Random Number GeneratorGenerate random numbers in any range. Integers or decimals, unique or with repeats, Math.random or W
- Regex ExplainerPaste any regular expression and get a token-by-token explanation: anchors, groups, quantifiers, cha
- Regex TesterTest JavaScript regular expressions against any string with live match highlighting, capture groups
- Roman Numeral ConverterConvert any number (1–3999) to Roman numerals and back. Validates canonical form and suggests correc
- SQL FormatterFormat and beautify SQL for 10 dialects including PostgreSQL, MySQL, SQLite, BigQuery, Snowflake, an
- String Escape / UnescapeEscape and unescape strings for five formats: JSON, JavaScript, HTML, URI components, and SQL litera
- UEN Generator & ValidatorGenerate structurally valid Singapore UEN (Unique Entity Number) for test data. Supports company (10
- UUID GeneratorGenerate cryptographically-strong UUIDs in bulk. Supports v4 (random), v7 (time-ordered), and the ni
- XML FormatterFormat XML with proper indentation, validate against the XML spec, or minify to a single line. Uses
- YAML FormatterFormat and validate YAML in your browser. Multi-document (---) supported. Errors point to line and c
- Anagram CheckerCheck whether two words or phrases are anagrams. Options to ignore case, spaces, and punctuation. Sh
- Case ConverterConvert text between 12 cases: lower, UPPER, Title, Sentence, camelCase, PascalCase, snake_case, CON
- Line SorterSort lines alphabetically, numerically, or by length. Remove duplicates, trim whitespace, shuffle ra
- Lorem Ipsum GeneratorGenerate placeholder text in classic Lorem Ipsum or six themed flavors: hipster, pirate, corporate b
- NATO Phonetic AlphabetConvert any text into the NATO phonetic alphabet — Alfa, Bravo, Charlie, Delta, Echo, Foxtrot, and s
- Palindrome CheckerCheck if a word, phrase, or sentence is a palindrome. Optionally ignore case, spaces, and punctuatio
- Random String GeneratorGenerate random strings for tokens, IDs, or test fixtures. Choose length, character set, cryptograph
- SlugifyConvert titles into clean URL slugs. Handles Unicode, strips diacritics, and lets you pick your sepa
- Text DiffCompare two blocks of text line by line and see exactly what changed. Runs entirely in your browser
- Text RepeatRepeat any text a chosen number of times with a custom separator. Handy for load tests, seed data, a
- Text ReverseReverse text by characters, words, lines, or sentences. Handles emoji and surrogate pairs correctly.
- Text to SpeechPaste any text and hear it read aloud in your choice of voice. Adjust rate and pitch. Uses your devi
- Unicode Text StylerTurn plain text into Unicode variants: bold, italic, script, monospace, small caps, upside-down, wid
- Whitespace CleanerTrim lines, collapse extra spaces, remove blank lines, normalize line endings (LF/CRLF), and convert
- Word CounterInstantly count words, characters, sentences, paragraphs, lines, and reading time. Everything happen
- Word Frequency CounterCount and rank every word in a document. Options for case-insensitivity, minimum word length, and ex
- Color Blindness SimulatorSimulate how your colors look to people with color vision deficiency (CVD). Covers all 8 common type
- Color ConverterPaste any color in hex, rgb(), rgba(), or hsl() and get it in every other format instantly. Includes
- Color Harmony GeneratorGenerate a palette from any base color using 7 classic color-theory schemes: complementary, analogou
- Contrast CheckerTest any foreground/background color pair against WCAG 2.2 contrast rules. Shows the ratio, live pre
- CSS Color NamesBrowse all 147 CSS3 named colors. Look up a color name from a hex code, or find the closest named co
- CSS Gradient GeneratorDesign linear, radial, and conic CSS gradients with unlimited color stops. Live preview and copy the
- Favicon GeneratorGenerate favicons from any letter, emoji, or short text. Custom gradient backgrounds. Download every
- Image ResizerResize any image to any dimensions and convert to WebP, JPEG, or PNG. Quality slider. Never uploaded
- Reef CameraLive camera with blue-cancel filters designed for reef tank photography. Cut through blue/actinic LE
- Compress PDFShrink a large PDF right in your browser. Great for scanned documents and photo-heavy PDFs — pick a
- Images to PDFTurn one or more images into a single PDF file. JPG, PNG, and WebP supported. Reorder the pages, pic
- Merge PDFsMerge two or more PDF files into a single document. Reorder pages, remove unwanted pages, and downlo
- Split PDFSplit any PDF into individual pages or custom ranges. Extract just the pages you need, then download
- CSV ↔ JSON ConverterConvert CSV data to JSON (or JSON to CSV) with configurable delimiter, header row option, and RFC 41
- JSON ↔ YAML ConverterConvert between JSON and YAML in either direction — YAML to JSON or JSON to YAML. Handles nested obj
- Query String ↔ JSONConvert URL query strings to JSON and JSON back to a query string. Handles repeated keys as arrays,
- Angle ConverterConvert between degrees, radians, gradians, turns, arcminutes, and arcseconds. Instant, high-precisi
- Cooking Measurement ConverterConvert cooking measurements between US customary (cups, tbsp, tsp, oz) and metric (ml, g). Volume a
- Universal Unit ConverterConvert between units across 8 dimensions: length, mass, volume, time, area, digital storage, speed,
- Age CalculatorEnter a date of birth to see age in years, months, days, hours, minutes, and seconds. Optionally com
- BMI CalculatorCalculate your Body Mass Index (BMI) in metric or imperial units. Shows category and healthy weight
- Body Fat Calculator (US Navy)Estimate body fat percentage using the US Navy tape-measure method. Needs only waist, neck (and hip,
- Coin FlipperFlip a coin online — one flip, or run up to 10,000 flips to see heads/tails distribution and longest
- Dice RollerRoll dice using D&D-style notation like 3d6, 1d20+5, or 2d10-3. Supports D4 through D100 presets, cu
- Fuel Cost CalculatorCalculate how much fuel a trip will cost. Supports MPG (US and UK), L/100 km, and km/L, with prices
- GPA CalculatorCalculate your weighted GPA across any number of courses. Supports 4.0, 4.3, and 5.0 letter-grade sc
- Ideal Body Weight CalculatorEstimate ideal body weight (IBW) using the Devine, Robinson, Miller, and Hamwi formulas. Compares al
- Percentage CalculatorEvery percentage calculation in one place: X% of Y, X is what % of Y, change from A to B, add/subtra
- Ratio CalculatorSimplify any ratio a:b to lowest terms, get the decimal / percentage / reciprocal, and solve for a m
- TDEE CalculatorCalculate your Total Daily Energy Expenditure (TDEE) — the calories you burn per day. Includes BMR (
- Tip CalculatorCalculate tip amount, total, and per-person split for any bill. Presets for 10 / 15 / 18 / 20 / 25%.
- Unit Price CalculatorEnter multiple products with price and quantity — the calculator ranks them by price per unit (per o
- APR ↔ APY ConverterConvert between APR (nominal rate) and APY (effective yield) for any compounding frequency — daily,
- Compound Interest CalculatorProject long-term investment growth with compound interest and regular contributions. Choose your co
- Discount CalculatorCalculate sale price and savings for any discount percentage. Includes common presets (10%, 20%, 30%
- Lease vs Buy CalculatorCompare total cost of leasing vs buying (car, equipment, appliances) over your chosen horizon. Inclu
- Loan CalculatorCalculate monthly loan payments and total interest for any amount, rate, and term. See how much you
- Mortgage CalculatorCalculate your monthly mortgage payment, total interest, and a year-by-year amortization schedule. A
- ROI CalculatorCalculate return on investment (ROI): total ROI percentage, net profit, and annualized ROI over any
- Sales Tax / VAT / GST CalculatorAdd tax to a net price OR reverse-calculate the pre-tax price from a gross total. Works for US sales
- Simple Interest CalculatorCalculate simple interest on a loan or deposit. Enter principal, annual rate, and time (years, month
- Age at Date CalculatorCalculate how old someone was (or will be) on a specific date. Shows years, months, and days plus to
- Countdown TimerCount down to any date and time, second by second. Add a label and share the URL — everything lives
- Date Difference CalculatorCalculate the number of days between two dates in three modes: total calendar days (with weeks / hou
- Date Duration CalculatorAdd or subtract any combination of years, months, weeks, days, hours, minutes, or seconds from a dat
- Date Format ConverterConvert any date into 12+ common formats: ISO 8601, RFC 2822, US MM/DD/YYYY, EU DD/MM/YYYY, Unix tim
- Time Zone ConverterConvert a time between any IANA time zones. See offsets, live now, and multiple destinations at once
- Unix Timestamp ConverterConvert Unix timestamps (seconds or milliseconds) to human-readable dates in every common format. In
- Weekday FinderFind the day of the week for any date, past or future. Also shows ISO week number, day of year, quar
- Base32 Encoder / DecoderEncode any text to RFC 4648 Base32 (A-Z, 2-7) or decode Base32 back to text. UTF-8 safe. Runs in you
- Base64 Encode / DecodeEncode or decode Base64 text. UTF-8 safe by default. Optional URL-safe variant. Runs entirely in you
- Data URI Encoder / DecoderEncode text or any file into a data: URI for inlining in HTML, CSS, or JSON. Decode any data URI bac
- HTML EntitiesEncode and decode HTML entities: &, <, ©, and every numeric &#nnn; entity. Choose na
- Morse Code TranslatorFree Morse code translator. Convert text to Morse code or Morse code back to text. Full A-Z alphabet
- Punycode / IDN ConverterConvert international domain names (IDN) with Unicode characters into Punycode (xn--) representation
- ROT13 / Caesar CipherEncode or decode text with ROT13 or a Caesar cipher of any shift (-25 to +25). Round-trip verified.
- Text ↔ BinaryConvert text into 8-bit binary (UTF-8) or decode binary back to text. Handles multi-byte characters
- URL Encode / DecodePercent-encode or decode URLs, query strings, and path segments. Choose between encodeURI and encode
- Meta Tag GeneratorGenerate SEO, Open Graph, and Twitter Card meta tags from your title, description, URL, and image. I
- QR Code GeneratorGenerate QR codes for URLs, text, WiFi credentials, and more. Customize colors and error correction.
- robots.txt TesterPaste your robots.txt and any URL to see whether Googlebot, Bingbot, GPTBot, or any user-agent is al
- URL ParserBreak any URL into its protocol, host, port, path, query parameters, and hash. Uses the browser's na
- User-Agent ParserParse any User-Agent string to identify the browser, engine, OS, and device. Auto-detects your own U
- UTM URL BuilderBuild UTM-tagged campaign URLs for Google Analytics, Adobe Analytics, and other tools. Presets for n
- File Hash CheckerDrop any file to compute its SHA-1, SHA-256, SHA-384, and SHA-512 hashes in your browser. Verify dow
- File Size ConverterConvert between bits, bytes, KB, MB, GB, TB, and PB. Choose binary (1024) or decimal (1000) base — t
- Hex ViewerUpload any file and see its raw bytes as a classic 16-byte-per-row hex + ASCII dump. Detects common
Free browser games — no download, no login. See the full games hub with genre filters →
- Play →15 PuzzleClassic 15-tile sliding puzzle. Slide numbered tiles into order from 1 to 15. Race against the clock
- Play →2048Play 2048 in your browser. Slide tiles to merge matching numbers and reach the 2048 tile. Free, no a
- Play →AsteroidsClassic Asteroids arcade game in your browser. Rotate, thrust, and shoot your way through waves of s
- Play →BattleshipClassic Battleship vs AI. Place your fleet, then take turns firing at the enemy grid to sink all shi
- Play →BlackjackPlay classic Blackjack against the dealer. Hit, stand, double down, or split — aim for 21 without bu
- Play →BreakoutPlay classic Breakout (Arkanoid) in your browser. Move the paddle with your mouse or arrow keys and
- Play →Bubble ShooterAim and shoot coloured bubbles to match 3 or more of the same colour. Classic bubble shooter arcade
- Play →CheckersClassic Checkers (Draughts) against an AI opponent. Capture all enemy pieces or block them to win.
- Play →Color FloodFlood-fill the entire board with one colour starting from the top-left corner. Beat it in the fewest
- Play →Connect FourDrop coloured discs to connect four in a row before the AI does. Classic two-player strategy game, n
- Play →Dino RunnerJump over cacti and duck under pterodactyls in this endless runner. How far can your dino go?
- Play →Flappy BirdPlay Flappy Bird in your browser. Tap or press Space to flap through the pipes. Free, no ads, high s
- Play →FroggerGuide your frog across busy traffic and a rushing river to safety. Free browser game, no install.
- Play →HangmanClassic Hangman word guessing game. Guess the hidden word one letter at a time before the stick figu
- Play →Memory MatchFlip cards to find matching pairs in this classic memory game. Three difficulty levels. Best time sa
- Play →MinesweeperClassic Minesweeper in your browser. Three difficulty levels, safe first click, fast timer. No insta
- Play →One Piece Card Game Pack OpeningOpen One Piece TCG booster packs from OP01 to OP10. Real card images, authentic rarity pulls, Secret
- Play →One Piece Card Game SimulatorPlay the One Piece Card Game in your browser. Full rules with DON!! system, Leader cards, Life cards
- Play →Pokémon Pack Opening SimulatorOpen Pokémon TCG booster packs from any set. Real card images, RNG rarity pulls, holographic animati
- Play →Pokémon TCG SimulatorBrowse the full Pokémon TCG card library with real card images, build 60-card decks, and play a full
- Play →PongPlay the original Pong arcade game in your browser. Control your paddle to rally against an AI oppon
- Play →Reaction Time TestClick as fast as you can when the screen turns green. Measures your reaction time in milliseconds. A
- Play →Simon SaysClassic Simon memory game. Watch the colour sequence, then repeat it. How long a chain can you remem
- Play →SnakePlay the classic Snake game in your browser. Eat food, grow longer, avoid walls and yourself. High s
- Play →SolitaireClassic Klondike Solitaire in your browser. Build four suit stacks from Ace to King. Draw 1 or Draw
- Play →Space InvadersClassic Space Invaders in your browser. Shoot descending alien waves, dodge their fire, and survive
- Play →Speed MathRace against the clock to answer as many math problems as possible. Addition, subtraction, multiplic
- Play →SudokuClassic 9×9 Sudoku puzzle in your browser. Three difficulty levels, hints, validation, and best time
- Play →TetrisPlay classic Tetris in your browser. Stack tetrominoes, clear lines, and beat your high score. Free,
- Play →Tic-Tac-ToeClassic Tic-Tac-Toe against an unbeatable AI or a friend. Three difficulty levels — can you beat the
- Play →Typing Speed TestMeasure your typing speed in WPM and accuracy. Choose 30 s, 60 s, or 120 s modes and track your pers
- Play →Whack-a-MoleClick moles as they pop up to score points. 30-second rounds — how many can you whack?
- Play →Word ScrambleUnscramble jumbled letters to find the hidden word. Three difficulty levels, hints available, and a
- Play →Word SearchFind hidden words in a letter grid. Classic word search puzzle with themed word lists and three grid
- Play →WordleGuess the hidden 5-letter word in 6 tries. A new word every day. Free Wordle clone that runs in your
- Play →YahtzeeClassic Yahtzee dice game in your browser. Roll five dice, keep the ones you want, and score in 13 c