Two small tools we use daily when working with APIs. Both run in your browser—no account needed.
JSON formatter — how it works
- Paste JSON into the input box.
- Click format to pretty-print with indentation, or minify to compress it.
- Invalid JSON shows a clear error so you can fix the line.
- Copy the result with one click.
JWT decoder — how it works
- Paste a JWT token (the long string from Authorization headers or cookies).
- See the header and payload decoded as readable JSON.
- Check expiry (exp) and other standard claims.
- Note: this tool decodes only—it does not verify the signature.
