Utility

Base64, URL & JWT Decoder

Encode or decode Base64 and URLs, or inspect a JWT header and payload without verifying its signature.

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We log that you used the tool and basic settings, never what you type or upload. A site administrator may enable a heavily masked sample for selected non-sensitive tools; those samples are deleted after 30 days.

Runs entirely in your browser. JWT decoding does not verify its signature.

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