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JWT decoder

Decode a JSON Web Token and show its header and payload. Tokens are decoded on your device only — never upload a real token to an untrusted site.

JWT Decoder

Tokens are decoded on your device only — never paste a real production token into an untrusted site.

How to use JWT decoder

  1. Paste a JSON Web Token.
  2. Read its decoded header and payload on your device.
  3. Check the claims (such as expiry) before trusting the token.

A good use for this

Inspecting a token during development to see what it actually contains.

Limits

Decoding only reads the token — it does not verify its signature, so a decoded token is not proven genuine. Never paste a real production token into any untrusted site; this tool decodes on your device only.

Related tools:JSON formatter/validatorJSON to CSVCSV to JSONXML to JSON / JSON to XML