About Public Key from Certificate
Extracts the Public Key from a Certificate.
Input: text. Output: text.
Format reference: Public Key from Certificate background and specification
Example
Use “Try example” to load this public sample and its settings, then run it.
Input
-----BEGIN CERTIFICATE----- MIIBfTCCASegAwIBAgIUeisK5Nwss2DGg5PCs4uSxxXyyNkwDQYJKoZIhvcNAQEL BQAwEzERMA8GA1UEAwwIUlNBIHRlc3QwHhcNMjExMTE5MTcyMDI2WhcNMzExMTE3 MTcyMDI2WjATMREwDwYDVQQDDAhSU0EgdGVzdDBcMA0GCSqGSIb3DQEBAQUAA0sA MEgCQQDyq9A6emHSLczn5Omu5muy+AReC53pTGCrW6Bi65OoobahT2RUSzXCYuvB 757fLLTKz+dLeo6sFkNhIzHZI+n7AgMBAAGjUzBRMB0GA1UdDgQWBBRO+jvkqq5p pnQgwMMnRoun6e7eiTAfBgNVHSMEGDAWgBRO+jvkqq5ppnQgwMMnRoun6e7eiTAP BgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEBCwUAA0EAR/5HAZM5qBhU/ezDUIFx gmUGoFbIb5kJD41YCnaSdrgWglh4He4melSs42G/oxBBjuCJ0bUpqWnLl+lJkv1z IA== -----END CERTIFICATE-----
Result
-----BEGIN PUBLIC KEY----- MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAPKr0Dp6YdItzOfk6a7ma7L4BF4LnelM YKtboGLrk6ihtqFPZFRLNcJi68Hvnt8stMrP50t6jqwWQ2EjMdkj6fsCAwEAAQ== -----END PUBLIC KEY-----
Parameters
This tool does not need additional parameters.
Before interpreting the result
Parsing a certificate shows its fields; it does not establish trust in the issuer or validate a certificate chain. Signing and verification require the algorithm and key format expected by the other party.
How to use this page
- Paste your input or open a local file.
- Adjust tool options if needed, then choose Run tool.
- Copy the result or download the original output bytes.
Inputs and results are not added to the public catalogue or saved in the URL. Processing happens in your browser; HTTP Request and DNS over HTTPS send the requests you explicitly run. Files up to 128 MiB can be opened; decompression and image tools may have smaller processing limits. Large results have a shortened preview. Text and HTML downloads use UTF-8; binary downloads preserve output bytes. Pasted text follows browser newline handling; open a file when exact input bytes matter.