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Simple, fast and useful tools for developers. Format JSON, decode JWTs, generate hashes, create UUIDs and more.

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JSON Formatter

Format and validate JSON data.

JWT Decoder

Decode and inspect JWT tokens.

UUID Generator

Generate random UUIDs instantly.

Fast

Lightweight tools that work instantly in your browser.

Private

Your data stays in your browser whenever possible.

Open Source

Built in public and available for developers to use and improve.

Ready to build?

Skip the unnecessary setup and use simple developer tools directly in your browser.

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