Fast, free web tools & games.
No signup. Nothing uploaded.
Everything here runs entirely in your browser — pick one and go, your data never leaves your device.
Over a hundred calculators, converters, text/code/design utilities and classic games — each does one thing well, loads instantly, and works offline. No accounts, no uploads.
Tools
Small, fast utilities that run entirely in your browser.
Text
Word Frequency Counter
See which words appear most often — nothing uploaded.
Text Diff Checker
Compare two texts line by line and see exactly what changed.
Word & Character Counter
Instant word, character, sentence and reading-time counts as you type.
Readability Score Calculator
Paste text, instantly see six standard readability formulas at once.
Case Converter
Change text to UPPERCASE, lowercase, Title Case, Sentence case and more.
Morse Code Translator
Text ↔ Morse with audio, ITU standard.
Caesar Cipher / ROT13
Shift letters to encode or decode, with a ROT13 preset and all 25 shifts to crack a cipher.
Emoji Picker
Search emojis by name and click to copy — browse by category.
Text to ASCII Art Generator
Type a word, get a big block-letter ASCII banner instantly. Choose the fill character, copy the result.
Data & Code
Scientific Calculator
Full expression calculator — trig, logs, powers and more.
Unit Converter
Length, weight, temperature, volume and more.
Recipe & Cooking Measurement Converter
Convert cups/tbsp/tsp to grams/oz and back, per ingredient — since ingredients weigh differently.
JWT Decoder
Decode a JSON Web Token — your token never leaves your browser.
JSON Formatter & Validator
Beautify, minify and validate JSON with error location.
JSON Diff
Compare two JSON objects by structure and key — see exactly what changed, with the full path.
JSON to TypeScript Interface Generator
Paste JSON, get TypeScript interfaces — nested objects, arrays and optional fields all handled.
SQL Formatter & Beautifier
Paste a query, get it cleanly indented by clause — SELECT, FROM, WHERE, JOIN, GROUP BY, ORDER BY.
Markdown Table Generator
Fill a grid, set alignment, copy clean Markdown.
Markdown Resume Builder
Write your resume in Markdown, preview it styled live, export a clean PDF via your browser's print function.
Markdown to HTML Converter
Live preview as you type. Copy the rendered HTML whenever you need it.
CSV ↔ JSON Converter
Convert CSV to a JSON array of objects and back, with quoted-field support.
YAML ↔ JSON Converter
Convert YAML to JSON and back — nested maps, lists and scalars, either direction.
Roman Numeral Converter
Number ↔ Roman numerals, 1 to 3999.
Number Base Converter
Convert between binary, octal, decimal, hex and any base 2–36.
Cron Expression Parser
Turn a cron expression into plain English and see its next run times.
Git Branch Name Generator
Pick a type, ticket and description, get a clean valid branch name plus a ready-to-copy checkout command.
Unix Timestamp Converter
Convert epoch timestamps to dates and back — seconds or milliseconds, local and UTC.
Slugify — Text to URL Slug
Turn text into a clean, URL-safe slug. Paste a list to batch-convert.
Screen Resolution & PPI Calculator
PPI, aspect ratio, diagonal pixels and megapixels from a resolution — plus ratio-locked resizing.
Encode & Hash
Number to Words
Spell out numbers in words, with cheque mode.
Base64 Encode & Decode
Convert text to Base64 and back, with full UTF-8 support.
Image to Base64 Converter
Drop an image, get a data: URI and CSS snippet — handy for embedding small icons.
URL Encode & Decode
Percent-encode text for safe use in URLs, and decode it back.
SHA Hash Generator
Compute SHA-1, SHA-256, SHA-384 and SHA-512 hashes of text.
Generators
Text to Speech
Read any text aloud with your browser's voices.
Lorem Ipsum Generator
Placeholder text by paragraphs, sentences or words.
Meta Tag Generator
SEO, Open Graph & Twitter meta tags, ready to paste.
Word Cloud Generator
Paste any text and get a word cloud sized by frequency, with a PNG download.
CSS Border Radius Generator
Rounded corners, pills, circles and blob shapes.
CSS Box Shadow Generator
Visual box-shadow builder with live preview.
Color Palette Generator
Harmonious schemes — lock, reshuffle, copy HEX/RGB.
Color Palette Extractor from Image
Drop an image, get its dominant colors as HEX/RGB swatches. Nothing uploaded.
Color Contrast Checker
Enter a text and background color, see the WCAG contrast ratio and AA/AAA pass status instantly.
Favicon Generator
Emoji, text or image → a full favicon set + .ico.
Random Number Generator
Random numbers in any range — draws, raffles, dice.
Spin the Wheel
A random picker & decision wheel for names, prizes or dinner.
Password Generator
Strong random passwords generated securely in your browser — never sent.
Signature Generator
Draw or type your signature, then download a transparent PNG — nothing uploaded.
Password Strength Checker
Type a password, see its estimated strength, crack time and weak patterns — checked locally.
File Encryption Tool
Encrypt or decrypt any file with a passphrase using AES-256-GCM. Nothing is ever uploaded.
UUID Generator
Generate random UUID v4 values in bulk with cryptographic randomness.
Flashcards — Spaced Repetition
Add your own cards, review what's due — the classic SM-2 algorithm adjusts the schedule automatically.
Random Name Generator
Generate realistic random names for test data, mockups or characters.
Anagram Solver & Word Unscrambler
Type your letters, see every word you can make — sorted longest first. Use ? as a wildcard.
QR Code Generator
Turn any text or link into a QR code and download it as PNG or SVG.
Barcode Generator (EAN-13 / UPC-A)
Type 12 or 13 digits, get a real scannable barcode with the check digit calculated automatically.
Images & Color
Image Compressor & Resizer
Shrink JPG, PNG and WebP right in your browser — the file never leaves your device.
CSS Gradient Generator
Build gradients with a live preview and copy the CSS.
CSS Animation Generator
Pick a preset, tune the timing, preview live, copy the @keyframes CSS.
Color Converter
Convert between HEX, RGB and HSL with a live picker and preview.
Time
Pomodoro Timer
A focus timer with breaks — customizable, with a sound alert.
Countdown Timer & Stopwatch
A countdown with an alert, or a stopwatch with laps.
Time Zone Converter
Compare a time across cities, with DST handled.
Reference
HTTP Status Codes
Searchable reference of every HTTP status code and what it means.
Regex Tester & Cheatsheet
Test regular expressions with live match highlighting, plus a cheat sheet.
ASCII Table
All 128 ASCII characters with dec, hex, octal and binary — searchable.
HTML Entities
Searchable reference of common HTML entities — name, decimal and hex.
Calculators
Quick, private calculators — nothing you type is uploaded.
Discount Calculator
Sale price, savings, stacked discounts and reverse percent-off.
Due Date Calculator
Pregnancy due date, weeks along and trimester.
Sales Tax Calculator
Add or remove sales tax; optional US state rates.
Time Card Calculator
Weekly hours from clock-in/out and breaks, plus pay.
Retirement / 401(k) Calculator
Project your nest egg and monthly retirement income.
Salary Take-Home Pay Calculator
2026 US net pay after taxes, by pay period.
Loan & Mortgage Calculator
Monthly payment, total interest, and full schedule.
Compound Interest Calculator
Investment growth with regular contributions.
Ideal Weight Calculator
Ideal weight from four formulas, plus healthy range.
BMI Calculator
Body Mass Index, category and healthy weight range.
Body Fat Calculator
Body fat % from measurements (US Navy method).
Calorie Calculator (TDEE)
Daily calories to lose, maintain, or gain weight.
Age Calculator
Exact age, and days between any two dates.
Percentage Calculator
Percent of, what percent, and percentage change.
Grade Calculator
Weighted grade, or the final-exam score you need.
GPA Calculator
Weighted GPA on the 4.0 scale from grades and credits.
Fuel Cost Calculator
Total gas cost for a trip, metric or imperial.
Tip Calculator
Tip, total, and split the bill between people.
Games
Play solo, or send a link and play a friend.
Reaction Time Test
How fast are your reflexes? Wait for green and click.
SameGame
Clear same-colour groups — bigger is better.
Tower of Hanoi
The classic disk-stacking puzzle — with auto-solve.
Peg Solitaire
Jump pegs to leave just one — the classic cross board.
Mastermind
Code-breaking logic puzzle — crack the colour code.
Dice Roller
Roll 3d6+2 or tap a quick die — for tabletop & D&D.
Yahtzee
Roll, hold and score across 13 categories — the classic dice game.
Ice Slider
Slide-until-wall route puzzle on ice.
Sokoban
The classic 1982 box-pushing puzzle — push, never pull.
Maze
Solve a fresh random maze — three sizes, timed.
Flood It
Flood the board to one colour before you run out of moves.
Lights Out
Flip plus-shapes of lights to darken the board.
Match 3
Bejeweled-style swap-and-clear gem puzzle.
Aim Trainer
Click targets fast — tracks accuracy and reaction time.
Tic-Tac-Toe
Vs an unbeatable AI, an easy AI, or a friend.
Block Puzzle
Drag shapes to fill and clear rows — no timer.
Endless Runner
Jump and duck to dodge — a one-button dino-style runner.
Whack-a-Mole
Tap moles before they duck — a fast reaction game.
Vertical Jumper
Doodle-style portrait bouncer — climb as high as you can.
Mahjong Solitaire
Match free tiles to clear the board — always solvable.
Bubble Shooter
Aim, shoot, match 3+ to pop — a classic arcade puzzle.
Tap Flyer
Flappy-style: tap to fly through the pipe gaps.
Idle Clicker: Stardust Factory
Tap, auto-generate, earn offline, prestige for boosts.
Sudoku
Classic Sudoku — three difficulties, unique solutions.
Minesweeper
The classic — first click safe, three difficulties.
Nonogram
Picture logic puzzles — fill from the number clues.
Solitaire
Classic Klondike — click to move, draw 1 or 3.
FreeCell Solitaire
All cards face up from the start — a pure puzzle of untangling the columns, almost no luck involved.
Spider Solitaire
10 columns, 2 decks — build same-suit King-to-Ace runs to clear them. 1/2/4-suit difficulty.
Pyramid Solitaire
Pair exposed cards that add up to 13 to clear the 28-card pyramid — Kings clear alone.
Conway's Game of Life
Draw cells, load classic patterns like the Glider and Pulsar, and watch the simulation evolve generation by generation.
Typing Speed Test
Measure your WPM and accuracy — best scores saved.
Word Search
Find hidden words in the grid — several themes.
Memory Match
Flip cards to find pairs — three sizes, best scores.
Hangman
Guess the word letter by letter — several categories.
Sliding Puzzle
The classic 15 puzzle — slide tiles into order.
Klotski (Huarong Dao)
Free the trapped general — the classic Chinese sliding-block puzzle.
Breakout
Classic brick breaker — bounce the ball, clear the wall.
Simon
The memory sequence classic — repeat the growing pattern.
Word Guess
Guess the five-letter word in six tries — daily, plus practice.
Daily Word Groups
Sixteen words hide four groups of four. A new puzzle every day.
Daily Trivia Quiz
Ten general-knowledge questions — the same quiz for everyone each day, plus practice mode.
Spelling Bee
Make words from 7 letters, always using the center letter. Find the pangram for a big bonus.
Word Boggle
Connect adjacent letters (even diagonally) to spell as many words as you can in 90 seconds.
Letter Boxed
Chain words around a 12-letter square, never two letters from the same side in a row, to cover every letter.
Checkers (Draughts)
Jump pieces, king your men — play a friend online.
Dots and Boxes
Draw lines, close boxes — play a friend online.
Pong
The classic paddle game — play the computer or a friend online.
Connect Four
Drop discs to get four in a row — play a friend online.
Chess
Full rules — play the computer or a friend online.
Reversi (Othello)
Trap discs to flip them — play the computer or a friend online.
Battleship
Fire at hidden grids until one fleet is sunk — vs a computer that hunts after a hit.
Battleship Solitaire (Bimaru)
Deduce where every ship is hidden from row/column clues — no guessing. Verified unique solutions.
Binary Puzzle (Takuzu / Binairo)
Fill with 0s and 1s: balanced rows/columns, no run of 3, no duplicate rows or columns.
Kakuro (Cross Sums)
Fill each run with 1-9 adding up to its clue, no repeats within a run. Verified unique solutions.
Sumplete
Delete numbers until every row and column sums to its target. Pure deduction, verified unique solutions.
Xiangqi (Chinese Chess)
Play the computer, a friend beside you, or send a link and play online.
Gomoku (Five in a Row)
Play the computer, a friend beside you, or send a link and play online.
Space Shooter
Blast waves of invaders and a boss.
Block Stack
The classic falling-blocks puzzle — rotate, stack, clear lines.
Snake
Grow longer, avoid the walls and your tail.
Water Sort Puzzle
Pour colored water between tubes until each tube holds one color. 12 levels, all verified solvable.
2048
Slide and merge tiles to reach 2048. Keyboard and touch supported.
Threes-Style Number Merge
1+2 makes 3, matching numbers 3+ double. See the next tile before you move — different rules than 2048.
Hexa Merge
A honeycomb instead of a square grid — tap 3+ connected same numbers to merge and double.
Fruit Merge
Real physics, not a grid — drop fruits, matching ones merge into the next size up.
Archery Duel
Set angle and power, account for the wind, fire — turn-based duel, 2-player or vs computer.
Backgammon
One of the oldest board games in the world — hit blots, enter from the bar, bear off first to win.
Animal Chess (Jungle)
Rank-based captures, river-jumping lions and tigers, and a race to the opponent's den. Play the computer or a friend.
Battle Tanks
Defend your base from waves of enemy tanks — blast through brick walls, dodge and destroy. Solo or local 2-player co-op.
Snake Duel
Two snakes, one board, one apple — Arrow keys vs WASD. Crash first and you lose. Local 2-player, best-of series tracked.
Queens Puzzle
One crown per row, column and color — none touching, not even diagonally. Three difficulties.