JWT Decoder
About this tool
Decode JSON Web Token headers and payloads without uploading the token.
Privacy
Your input is processed locally in your browser and is not uploaded.
Frequently asked questions
Is my input uploaded?
No. Input is processed locally in your browser and is not uploaded.
Does decoding verify a JWT signature?
No. Decoding only displays the header and payload. It does not prove authenticity.
Does it work on mobile?
Yes, although larger tables and documents are easier to inspect on a wider screen.