Verify if a website uses a valid SSL Certificate. Check HTTPS status, measure handshake latency, and ensure your connection is secure.
SSL (Secure Sockets Layer), now technically TLS (Transport Layer Security), is the standard technology for keeping an internet connection secure. It safeguards any sensitive data that is being sent between two systems, preventing criminals from reading and modifying any information transferred, including potential personal details.
The most common type. Verifies that the owner has control over the domain name. It provides encryption (the green lock) but minimal identity assurance.
Requires a thorough vetting process of the organization. Often displays the company name in the browser address bar (though browsers are phasing this visual out).
Essential for E-commerce.
If your SSL certificate expires or is invalid, browsers like Chrome and Firefox will show a scary "Not Secure" warning to visitors. This tool helps you verify that your site is loading via HTTPS correctly to avoid losing traffic.
Build customer confidence.
Mixed content occurs when a secure webpage (loaded over HTTPS) contains scripts, styles, or images loaded over an insecure HTTP connection. This compromises the security of the entire page.
Historically, encryption added a small overhead. However, modern HTTP/2 requires HTTPS and is significantly faster than the old HTTP/1.1 protocol. So, SSL actually enables faster speeds today.