Generate SSL Certificate Signing Requests (CSR)
Create standard PKCS#10 Certificate Signing Requests (CSR) and 2048-bit RSA Private Keys for SSL/TLS certificates.
About This Tool
CSR Builder creates standard PEM-formatted Certificate Signing Requests containing your domain name, organization, country, and public key needed to order SSL certificates from Certificate Authorities.
Key Features
Standard PKCS#10 CSR PEM output
2048-bit RSA Private Key generation
Custom organization and country fields
100% private in-browser generation
How to Use This Tool
- Enter your Domain / Common Name (e.g. toolsnippet.com).
- Fill in your Organization, 2-letter Country code, and State.
- Click 'Generate CSR & Private Key'.
- Submit the CSR to your SSL provider and save the Private Key securely.
Why Use This Tool
- Generates both the CSR and RSA Private Key in one step.
- Client-side generation guarantees your private key is never transmitted over the internet.
Pro Tips
- Always store your RSA Private Key safely; Certificate Authorities do not have a copy of it
Frequently Asked Questions
What is a CSR?
A CSR (Certificate Signing Request) is an encrypted message sent to a Certificate Authority containing your public key and domain information to request an SSL certificate.