The Certificate Key Matcher helps you check if a certificate and a private key belong together.
It can also test if a CSR and a certificate match.
You can use it before installing an SSL certificate to avoid setup problems.
The tool works fast and shows results in seconds.
A private key and a certificate are connected by their encryption data.
They must match to make HTTPS work correctly.
If they don’t, your server may reject the connection.
This can cause browser errors and break your website’s security.
The Certificate Key Matcher compares key details between the files.
It checks the modulus value and confirms if both are identical.
If they match, you know the files belong to the same pair.
If not, you can find the correct key or CSR before installation.
You can use this tool for PEM, CRT, or CSR files.
Just copy and paste the text into the boxes or upload the files directly.
The result will show whether the files match or not.
No coding skills or special software are needed.
This tool is helpful for web developers, system admins, and anyone managing SSL certificates.
It saves time and prevents errors during SSL setup.
It also improves security by making sure you’re using the right files together.
Using it ensures your website stays secure and trusted.