sf-test-demo is a Chrome add-on developed by shangfengpawan. It aims to provide users with a safer browsing experience by intercepting request headers and analyzing response headers to determine whether a website is legitimate. With the increasing number of malicious phishing websites, this add-on offers an additional layer of protection for users while they browse the internet.

The main feature of sf-test-demo is its ability to detect and block requests to potentially harmful websites. By analyzing the response headers, the add-on can identify if a website is legitimate or if it poses a security risk. This helps users avoid falling victim to phishing attacks and other online scams.

With sf-test-demo installed, users can browse the internet with more confidence, knowing that the add-on is actively working to protect them from malicious websites. The add-on is available for free on the Chrome platform and falls under the category of Browsers, specifically Add-ons & Tools.