JWT Decoder
Everything runs in your browser — no data ever leaves your device.
About JWT Decoder
Decode and inspect JWT tokens online: view header, payload and expiration in a readable form. Free JWT debugger — tokens never leave your browser.
Is everything free?
Yes. All tools, games and demos on Tu-X are free to use. The site is supported by non-intrusive ads.
Do my data and files leave my device?
Most tools run entirely in your browser — your text, images and files never leave your device. See our Privacy Policy for details on each product.
Do I need an account?
No. Every product works instantly, with no sign-up required.