Paste a JSON Web Token to decode its header and payload.
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PEM / Certificate Decoder
Inspect local X.509 certificates, validity, usages, SANs, and fingerprints.
ASCII / Char Code Viewer
Paste a string to see each character with its numeric code point underneath.
Chmod Calculator
Toggle permissions or enter a number to see the chmod breakdown.
CSP Builder
Build a Content Security Policy and flag risky directives entirely locally.