// kit · cert

X.509 certificate analyzer

Paste a PEM-encoded certificate. I show issuer, subject, validity, signature algorithm and PQ verdict.

PASTE PEM

// idle

↑ Paste a PEM certificate

// privacy

Privacy by design

Your reading isn't for sale.

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Zero analytics cookies, no fingerprinting, no embedded pixels.

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Nothing about your activity leaves this server.

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API keys you save are sealed with libsodium.