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Decode JWT (JSON Web Token) tokens instantly with our free online tool. Simply paste your JWT to view the decoded header and payload. Check expiration times, view all claims, and copy individual values - all 100% client-side.
View the decoded JSON of both header and payload sections.
Automatically detect if your token is expired.
Copy individual claims or the entire payload as JSON.
All decoding happens in your browser. Your token never leaves your device.
Yes, our JWT decoder is 100% client-side. Your token never leaves your browser.
Yes, you can decode the header and payload without a secret. Only signature verification requires the secret.
Look for the 'exp' claim in the payload. If the current time is greater than this value, the token is expired.