JWT Debugger

Decode and inspect JSON Web Tokens.

Encoded JWT
Header 

    

    

      Payload
      

    

    

      Signature
      

    

  







  

    
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About the JWT Debugger

  

      

        
What does the JWT Debugger do?

        
Decode and inspect JSON Web Tokens. GeekTool runs the JWT Debugger entirely in your browser — input never leaves your device.

      

      

        
Is the JWT Debugger free?

        
Yes. The JWT Debugger is part of GeekTool, a free suite of 50+ developer utilities. No sign-up, no ads inside the tool, no quotas.

      

      

        
Does the JWT Debugger send my data to a server?

        
No. All processing is client-side JavaScript. Your input stays in your browser tab — we never see it.