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Certificate Key Matcher

Check whether a certificate and private key belong together, entirely inside your browser.

Certificate

Paste or import a certificate in PEM or DER form.

Supports .crt, .cer, .pem, .der, and .txt files.

Private Key

Paste or import an RSA or EC private key.

Supports PEM private keys such as PRIVATE KEY, RSA PRIVATE KEY, and EC PRIVATE KEY.