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CSR Certificate Generator
Generate a locally signed SSL/TLS or code-signing certificate request and private key
Enable JavaScript to use the interactive controls. Your guide and examples are available below.
Features
- Choose SSL/TLS or code-signing request
- RSA 2048, 3072 or 4096-bit key pair
- ECDSA P-256, P-384 or P-521 with local PKCS #10 signing
- Select SHA-256, SHA-384, SHA-512 or legacy SHA-1
- Enter organization, country, location and optional DNS SANs
- Preview and download PEM private key and CSR
About CSR Certificate Generator
Generate a local RSA or ECDSA private key and PKCS #10 request for SSL/TLS or code signing.
How to use it
- Choose SSL/TLS or code signing and enter the domain or signing identity.
- Open More settings to select RSA/ECDSA, key strength or curve, hash and subject details. Only the common name is required for a code-signing request.
- Generate locally, download the private key securely and submit only the CSR to your certificate authority.
Try CSR Certificate Generator
Domain: example.com Alternative names: www.example.com
Processing and limitations
Browser
Web Crypto needs HTTPS. SHA-256 remains the default; SHA-1 is a legacy compatibility option and may be rejected by a certificate authority.
Questions and answers
What can I do with CSR Certificate Generator?
Choose RSA or ECDSA, SHA-2 and the certificate subject, then generate and export locally.
Where is my input processed?
The main operations run in your browser. Device models may require a first-use download; browser storage and resource limits apply.
What should I check before using the result?
Store the generated key securely; does not issue or sign a trusted certificate.
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