JWT Decoder
Decode JWT tokens to view the header, payload, and signature. Perfect for debugging and inspecting tokens. Does NOT verify signatures.
Quick answer
A JWT decoder lets you inspect a JSON Web Token by showing its header, payload, and signature sections. ClickBuildLabs decodes JWTs in your browser for debugging, but it does not verify signatures or prove that a token is trustworthy.
JWT Decoder FAQ
Does this verify JWT signatures?
No. This tool only DECODES the token for inspection. It does NOT verify the signature. Do not use for security purposes.
What parts of a JWT are shown?
The header (algorithm), payload (claims), and signature (Base64 encoded).
Is my JWT stored?
No. All decoding happens locally in your browser. Your token is never transmitted.
Can I use this with production tokens?
Avoid pasting sensitive production tokens into any tool unless you understand the risk. This page decodes locally, but tokens can still contain private claims.