JWT Inspector

Decode and verify in your browser

Paste a JSON Web Token to see its header, payload, and signature. Optionally paste a public key or shared secret to verify the signature. Nothing leaves this page.

All decoding happens locally. The token is never sent to any server.
Token (color-coded by part)
Format
Expiry
Signature
Header

  


  

    

      
Payload claims

    

    

    

  


  

    

      
Signature verification

    

    
Paste the public key (RS/ES/PS algorithms) or shared secret (HS algorithms) to verify the signature.