Mini-games, tools, and experiments — all in one place. No accounts needed.
Draw a perfect circle and get scored on precision
Combine elements to discover new items
Analyze any website's status, headers, and performance
Format, minify, and diff JSON data
Test regular expressions with live highlighting
Encode and decode Base64 and URL strings
Check WCAG color contrast ratios
Generate unique identifiers instantly
Guess the 5-letter word in 6 tries
Test your typing speed and accuracy
Slide tiles to reach the 2048 tile
Flip cards to find matching pairs
Classic snake game — eat, grow, survive
Clear the minefield without detonating any
Stack and clear lines in the classic block game
Test your reflexes — click as fast as you can
Fill the 9×9 grid with logic
Parse and explain cron expressions in plain English
Decode and inspect JSON Web Tokens
Build CSS gradients with a visual editor
Write Markdown and preview it live side-by-side
Compare two texts and see line-by-line differences
Searchable reference for all HTTP status codes
Tap to flap — dodge the pipes and beat your high score