JWT Tools

Decode JWT

Decode JWT decodes a JWT header and payload and shows the algorithm and claim status, without verifying the signature. Free, fast, and completely private.

Client-sideRuns entirely in your browser — your data never leaves your device.

Decode JWT is a free JWT Tools utility that runs entirely in your browser — nothing you enter is uploaded.

JWT
Decoded header & payload



  
How to use Decode JWT

  
    
      
  1. Drop your JWT into the field at the top of Decode JWT.
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  2. The result is computed live in your browser as you edit the input.
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  3. Use Copy to keep or reuse the result.
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About this tool

  
There is no server behind Decode JWT. Decode JWT decodes a JSON Web Token in your browser, showing the header and payload without verifying secrets remotely.

  
Signature verification that needs a secret should be done in a trusted environment; Decode JWT focuses on decoding. Your input never leaves the page, and no account or install is required.

  
Frequently asked questions

  

      
How do I use Decode JWT?
Use Decode JWT to decode your input without installing anything; everything happens client-side.

      
Is Decode JWT free to use?
Yes — Decode JWT is completely free, with no usage limits.

      
Is my input private in Decode JWT?
Yes — your input never leaves your device; Decode JWT does all the work in your browser.

      
Does Decode JWT verify the JWT signature?
Decode JWT decodes the token locally so you can inspect its header and payload; verification needs the matching key.

      
Can I use Decode JWT without a connection?
Yes — after the first load Decode JWT runs entirely offline.

  

  
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