JWT Decoder
Decode JSON Web Tokens (JWT) to view header, payload, and signature.
Header (Algorithm & Token Type)
Payload (Data)
Signature
How does this tool work?
Decodes JSON Web Tokens for analysis.
Paste your JWT into the input field to decode and inspect the header, payload, and signature.
Where are my data processed?
Only in your browser. Your data is not sent to any server.
The tool calculates and converts with JavaScript right on your device. Input and files are not sent to us or anyone else. You can check this yourself: load the page, disconnect from the internet, and the tool keeps working in the open tab.
No Server UploadNo sign-upRuns Offline in Tab