CSR Generator Tool
Generate a CSR for your SSL certificate application. Fill in the details below.
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Start Free TrialWhat is a Certificate Signing Request (CSR)?
A Certificate Signing Request (CSR) is a block of encoded text that is given to a Certificate Authority (CA) when applying for an SSL Certificate. It contains information that will be included in your certificate such as your organization name, common name (domain name), locality, and country.
Why You Need a CSR Generator
Creating a CSR is the first step in obtaining an SSL certificate. Our generator helps you create a properly formatted CSR, along with the private key you'll need to install your certificate when it's issued.
How to Use the CSR Generator Tool
- Fill in all required fields (marked with *) with accurate information about your organization and domain
- Add any Subject Alternative Names (SANs) if you need to secure multiple domains with one certificate
- Choose your key size (2048 bits is standard for most applications)
- Click "Generate CSR" to create your CSR and private key
- Copy the CSR and submit it to your chosen Certificate Authority
- Save your private key securely—you'll need it later to install your certificate
Security Information
All CSR generation happens in your browser. Your private key is never transmitted over the internet or stored on our servers, ensuring maximum security for your sensitive key material.
Frequently Asked Questions
Q. What is a Common Name in a CSR?
The Common Name is the fully qualified domain name that you're securing with your SSL certificate. For a single domain, this would be something like "example.com". For a wildcard certificate, use "*.example.com".
Q. What are Subject Alternative Names (SANs)?
SANs allow you to secure multiple domains or subdomains with a single SSL certificate. For example, you might want to secure both "example.com" and "www.example.com" with the same certificate.
Q. What key size should I choose?
2048 bits is the industry standard and provides strong security for most applications. 4096 bits offers even stronger security but might require more server resources and slightly impact performance.
Q. How do I submit my CSR to a Certificate Authority?
Different CAs have different processes, but generally, you'll paste the entire CSR (including the BEGIN and END lines) into their application form when purchasing an SSL certificate.
Q. Why should I keep my private key secure?
Your private key is used to decrypt data that was encrypted with your public key (in your certificate). If someone gets your private key, they could potentially decrypt secure communications or impersonate your website.
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