Format JSON, encode Base64, test regex, count words, decode JWTs and more — all free, instant, no account needed.
Everything a developer needs — format, encode, test, compare, convert. All free, no registration.
Format, beautify, minify and validate JSON instantly. Syntax error detection included.
Encode text to Base64 or decode Base64 strings. URL-safe mode supported.
Test regular expressions in real-time with live match highlighting and group capture.
Count words, characters, sentences, paragraphs and reading time as you type. Keyword frequency included.
Encode special characters for safe URL use or decode percent-encoded URLs instantly.
Compare two blocks of text or code side-by-side. Additions in green, deletions in red.
Decode JSON Web Tokens — view header, payload, claims, and check expiry instantly.
Convert Markdown to HTML with live split-screen preview. Great for bloggers and devs.
Convert between HEX, RGB, HSL and CMYK with live preview and color swatches.
Generate and explain cron expressions visually with human-readable descriptions.
Speed, privacy, and zero friction. No sign-up walls, no paywalls, no tracking.
All tools run locally in your browser. Zero server round-trips. Works offline after initial load.
Your code and data never leave your device. Everything runs in JavaScript — we see nothing.
Fully responsive on desktop, tablet and mobile. Same great experience anywhere in the world.
No pop-ups, no cookie banners, no newsletter prompts. Just the tool you came for.
No usage limits, no premium tiers, no account needed. Use as much as you need, forever.
New tools added regularly based on user requests. Need a tool? Tell us and we'll build it.