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JWT Decoder

Paste a JSON Web Token to read its header and payload, with issued-at and expiry timestamps rendered as human dates. Decoding happens locally so tokens never travel. Everything happens locally in your browser: nothing is uploaded, stored, or logged.

Known limitations

Decode only. The signature is not verified against any secret or public key — never trust a decoded token for authorisation.

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JWT Decoder · client-side FFmpeg

FileForge is bringing FFmpeg entirely inside your browser tab — nothing uploads. Enable this tool by turning on cross-origin isolation in your deployment (see ffmpegwasm.netlify.app), or use the desktop CLI in the meantime.