Format JSON, encode Base64, test security, generate passwords—everything you need, all in one place. Instant, free, and completely private. No accounts, no tracking, no BS.
Built for
Everything you need in one place—encoding, formatting, testing, generating. No more jumping between sites. Ship faster, code better.
Format JSON, encode Base64, decode JWTs, generate UUIDs, test regex, convert cURL commands, format SQL—all the tools you use every day, instantly accessible.
Test clickjacking vulnerabilities, analyze HTTP headers, check OWASP Top 10, inspect email headers—all client-side so your sensitive data never leaves your machine.
Visualize data structures, understand network protocols, learn security best practices—perfect for students and developers leveling up their skills.
Tool categories
From encoding and formatting to security testing and generators—everything organized so you can find what you need in seconds.
How it works
Every tool runs in your browser. Nothing gets uploaded, nothing gets tracked, nothing gets stored. Your data stays yours, always.
Every tool runs in your browser. No servers, no APIs, no middlemen. Your code, your data, your control.
No waiting, no loading spinners. Paste, click, done. Works offline too—once loaded, you're set.
Want full control? Clone the repo and run it yourself. Perfect for air-gapped environments or when you need complete privacy.
Open source
Free forever, open source always. Found a bug? Want to add a tool? We'd love your help. No complex build process—just HTML, CSS, and JavaScript. Simple.