JWT Decoder
Decode and inspect JSON Web Tokens online. Free JWT decoder that reveals header, payload, claims, and expiration details instantly.
About JWT Decoder
JSON Web Tokens (JWT) are an open standard for securely transmitting information between parties as a JSON object. A JWT consists of three parts: Header, Payload, and Signature.
Security Note: Never share JWTs containing sensitive information. This tool decodes but does not verify signatures.
How to Use JWT Decoder
Enter your data
Open JWT Decoder and type or paste the data you want to process.
Choose the operation
Select the encoding format, hash algorithm, or conversion mode as needed.
Get instant results
The output is generated immediately as you type — no need to click a button.
Copy the output
Click the Copy button to copy the result to your clipboard for use elsewhere.
Frequently Asked Questions
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