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Security & Network

New

Certificate Decoder

Decode certificates, certificate requests and public keys from PEM or DER, with expiry, names, fingerprints and a chain check, all in your browser.

certificatex509pem
Runs locallyChains, SANs and expiryPublic key to JWT Verify
Certificate input

PEM or DER, up to 1 MB. Read on this device; nothing is uploaded.

Paste one block or a whole chain, or the output of an openssl command. Choosing a file replaces the text, and typing replaces the file. Private keys are never read.

Results

Paste a certificate, a certificate request or a public key, or choose a file. What it says appears here, and nothing leaves this device.