JWT decoder
Read a token’s claims — locally
Decode a JSON Web Token and read its header and payload claims, with the expiry time checked against your clock. The token is decoded entirely on your device and never sent anywhere.
How it works
- Open the tool and add your file (or paste your text).
- Adjust the options — everything previews instantly.
- Download the result. Done.
Private by design
This tool runs 100% in your browser. Your files are never uploaded to a server, never stored, and never seen by anyone — close the tab and nothing remains.
Free, no limits
No account, no watermarks, no daily caps. If you also need full design tools, the Ijodly editor is one click away.
Frequently asked questions
Is JWT decoder free to use?
Yes — JWT decoder is completely free. There is no account to create, no watermark on your results and no daily limits.
Are my files uploaded when I use JWT decoder?
No. JWT decoder runs entirely in your browser. Your files never leave your device and nothing is stored on a server — close the tab and nothing remains.
Do I need to install anything or sign up?
Neither. Open the page, use JWT decoder straight away and download your result. No install, no signup.