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?
100% Client-Side: Your data never leaves your browser.
All calculations, conversions, encodings, and file processing of this tool are executed exclusively locally via JavaScript on your client device. No inputs, passwords, cryptographic keys, texts, or uploaded files are ever sent to our servers or third parties. Once the page is loaded, the tool remains completely functional even offline.
No Server Upload100% GDPR CompliantRuns Offline in Tab