Eight powerful developer utilities — all free, all in one place. Auto-saves your work. Keyboard shortcuts. No sign-up, no limits. Just open and build.
Paste JavaScript code and get instant analysis — syntax errors, common bugs, style warnings, and performance hints highlighted line-by-line.
Watch sorting algorithms in action, step by step. Select an algorithm, generate an array, and see exactly how it works.
Paste CSV or JSON data and instantly generate beautiful charts — bar, line, pie, or scatter. Perfect for quick data exploration.
Test regular expressions in real time — see matches highlighted, capture groups extracted, and generate code snippets in multiple languages.
Send HTTP requests directly from the browser — GET, POST, PUT, DELETE. Add headers, body, and inspect the full response. A lightweight Postman alternative.
Paste any JSON to instantly format, validate, minify, and explore the structure. Errors are shown with exact line numbers.
Decode and inspect JSON Web Tokens instantly — see the header, payload, and signature. Validates structure and expiry automatically.
A collection of everyday developer tools — Base64 encode/decode, hash generator, UUID creator, URL encoder, and color picker.