# JWT Decoder — Free, In Browser

Decode a JWT to inspect its header and payload. 100% in your browser — free, no sign-up, no upload.

## Inspect JWT claims

Paste a token to decode the header and payload, with issued/expiry times. Decoding happens in your browser; the token is never uploaded.

## How to

1. Paste a JWT.
2. Read the decoded header and payload.
3. Check issued and expiry times.

## FAQ

**Is it free?**

Yes, completely free with no file limits.

**Is my data private?**

Yes — this tool runs entirely in your browser. Your files and text are never uploaded.


## Related

- [Text Diff Checker — Free, In Browser](/dev/text-diff)
- [Unix Timestamp Converter — Free](/dev/timestamp-converter)
- [UUID Generator (v4) — Free](/dev/uuid-generator)
- [URL Encode / Decode — Free](/dev/url-encode)
- [Hash Generator (SHA-256, SHA-1, SHA-512) — Free](/dev/hash-generator)
- [Base64 Encode / Decode — Free](/dev/base64)
- [JSON Formatter & Validator — Free](/dev/json-formatter)
