FREE SSL TOOLS

SSL Diagnostic Tools
Troubleshoot your SSL woes with our free SSL tools.

Whether you’re setting up a new SSL certificate, troubleshooting a missing padlock, or preparing a CSR before submission, having the right diagnostic tools saves time and avoids costly mistakes. Our free SSL tools are built for website owners, developers, and IT teams who need quick, reliable answers without the need for command-line expertise.

Use our CSR Decoder to verify your certificate signing request before submitting it to a Certificate Authority, our SSL Checker to diagnose why your padlock isn’t showing or identify mixed content issues, and our SSL Converter to switch your certificate between PEM, DER, P7B, and PFX formats in seconds. All tools are free, require no software installation, and work directly in your browser.

CSR Decoder

Check that the certificate signing request generated from your server is valid and ensure all information is accurate and matches your domain.

SSL Checker

Diagnose issues with your SSL installation with our SSL checker tool. View your certificate type, details and check for non-HTTPS links.

SSL Converter

Different servers or platforms require SSL certificates to be converted to specific formats. Use this tool to convert to PEM, DER, P7B, and PFX.

BuySSL is the UK's specialist SSL certificate provider. We offer 256-bit encryption, competitive prices, and a 30-day money-back guarantee - because keeping your website secure shouldn't be complicated.
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