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SSL Converter

Convert PEM, CRT, CER, and DER certificates into normalized PEM, DER Base64, DER hex, and bundle PEM formats locally in your browser.

Supports .crt, .cer, .pem, .der, and .txt files. This standalone browser-only version focuses on X.509 certificate conversion and does not include PKCS#7, P7B, or PFX parsing.

Convert without leaving the browser

Paste a certificate, import a file, or drop a certificate chain to normalize it into PEM, Base64 DER, or hex DER. If multiple certificates are found, you can switch between them and export the full bundle as one PEM chain.