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ProgrammerKit

JWT Decoder

Decode and inspect JSON Web Tokens — header, payload and signature.

Free · Runs in your browser · Last updated

Header

Payload

 
 
 
Signature
 
 
Signature verification requires the secret/public key and is not performed here.
 
 
 
  
  
 
About this tool
 
Paste any JWT to decode the header and payload, view standard claims with human-readable timestamps, and check expiration. Decoding is local.
 
Privacy
 

All processing for JWT Decoder happens locally inside your browser using JavaScript.
        Your input is never uploaded to a server, logged, or shared with third parties.

 
  
 
Frequently asked questions
 
 
  Is the JWT Decoder free to use?   
Yes. JWT Decoder is completely free for both personal and commercial projects. There are no usage limits, no sign-up, and no premium tier.
 
  Is my data safe when I use JWT Decoder?   
All processing happens locally in your browser using JavaScript. Your input is never uploaded to our servers, logged, or shared with any third party.
 
  Does JWT Decoder work offline?   
Once the page has loaded, the tool runs entirely client-side. You can disconnect from the internet and it will keep working in the same browser tab.
 
  Which browsers are supported?   
JWT Decoder works in all modern browsers, including the latest versions of Chrome, Firefox, Safari, Edge, Brave, and Opera, on desktop and mobile.
 
  Do I need to install anything?   
No. JWT Decoder runs in any modern web browser with no installation, browser extension, or account required.
 
 
 
 
 
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