devcrate / Encoding / JWT Decoder
Encoding

Decode a JWT without sending it anywhere.

Paste a JWT to see its decoded header and payload claims. This does not verify the signature — it's for inspecting claims during development, not for trusting a token's authenticity.

runs entirely in your browser — nothing is uploaded
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How to use the jwt decoder

  1. Paste a JWT (three dot-separated Base64URL sections).
  2. Click Decode to see the header and payload as readable JSON.
  3. Note: this tool does not verify the signature — never trust a decoded token's contents without server-side verification.