JWT Decoder
Decode JWT headers and payloads in your browser. No verification, no uploads—just quick inspection.
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Decode JWT headers and payloads in your browser. No verification, no uploads—just quick inspection.
Chain this with other tools →NewEnhance your workflow by combining these tools together
This tool only decodes the JWT header and payload. It does not verify signatures or validate tokens. Avoid pasting secrets or private data.
Paste any JSON Web Token (JWT) to Base64URL-decode the header and payload for quick inspection. This tool does not verify signatures or validate tokens.
All decoding happens locally in your browser, keeping secrets safe while you debug authentication flows, API calls, or authorization claims.
Does this verify signatures? No—this tool only decodes header/payload for inspection.
Should I paste production tokens? Avoid secrets; use test tokens when possible, though decoding is local.