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Decode JWT tokens and inspect header, payload, and expiry.
Decode and inspect JSON Web Tokens (JWTs) instantly in your browser. Paste any JWT to see the decoded header, payload, and signature. Checks token expiry and highlights claims like iss, sub, aud, and exp. No data leaves your browser.
JWT Decoder provides an instant, browser-based solution for inspecting JSON Web Tokens without requiring software installation or sign-ups. It breaks down headers, payloads, and signatures while automatically checking token expiration and standard claims. Because processing occurs entirely client-side, sensitive authorization tokens never leave your browser.
Good to know: This tool is strictly for decoding and inspecting tokens; it does not support generating, signing, or verifying the cryptographic validity of tokens.
Quickly decode and inspect JSON Web Tokens to view headers, payloads, and claim details directly in your browser.
Access the JWT Decoder tool
Navigate to the JWT Decoder tool page in your web browser to begin the inspection process.
Paste your JWT into the input
Copy your encoded JSON Web Token and paste it into the provided text area. The tool will automatically begin processing the string.
Inspect the decoded header and payload
Review the automatically decoded JSON data to see the algorithm, type, and specific claims like issuer or subject.
Verify token expiry and claims
Check the highlighted claims to verify the 'exp' timestamp and ensure the token has not expired. The tool identifies standard claims for easy reading.
Analyze the signature status
View the signature component of the token to complete your inspection of the three-part JWT structure.
Estimated time: PT1M
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