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SSL Certificate: webpagetest.net

🟢 Valid Certificate
Common Namewebpagetest.net
IssuerLet's Encrypt
Issuer CNR12
Valid FromMay 17 01:15:05 2026 GMT
Valid UntilAug 15 01:15:04 2026 GMT (67 days left)
Serial Number064CCF929C04651D63F8151597428F4CB44B
🌐 Subject Alternative Names (1)
ℹ️ About SSL Certificates

SSL (Secure Sockets Layer) certificates encrypt data between your browser and webpagetest.net's server. A valid SSL certificate ensures that your connection is private and that you're communicating with the real Webpagetest website.

Websites without valid SSL certificates may show browser warnings and are penalized in search engine rankings.