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Base64 Decoder for Certificates

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PEM certificates are Base64-encoded. Decode locally — especially private keys.

Example

MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA...
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Tips

  1. 1Strip BEGIN/END markers.
  2. 2Output is binary ASN.1.
  3. 3Never share private keys.

Frequently Asked Questions

Safe for private keys?

Yes. Browser only.

What is PEM?

Base64 + BEGIN/END markers.

See cert details?

Use openssl x509 for readable output.