Free Online Developer Tools

Format, encode, generate, and convert data. Essential developer utilities that run in your browser.

Choose a Category

🔑 Encode / Decode 5 tools 📝 Format 5 tools ⚡ Generate 5 tools 🔒 Hash & Data 5 tools

About DevKit

DevKit provides essential developer tools that run entirely in your browser. Format JSON, decode JWTs, generate UUIDs, test regex patterns, convert colors, and much more. No data ever leaves your machine.

Why DevKit?

100% Client-Side: Your data never leaves your browser
No Registration: Use any tool instantly, no account needed
Developer-Focused: Built by developers, for developers
Always Free: No premium tiers or usage limits