URL Rule is a free Chrome add-on developed by mouse-man. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools program. The main purpose of URL Rule is to solve the issue of Chrome automatically converting HTTP websites to HTTPS.

With URL Rule, users can specify the default HTTP protocol for domain names, effectively addressing the inconvenience caused by Chrome's automatic conversion to HTTPS. This feature allows users to have more control over their browsing experience and ensures that websites load with the desired protocol.

By installing URL Rule, users can prevent the automatic conversion to HTTPS and maintain the original HTTP protocol for websites they visit. This can be particularly useful for websites that may not have HTTPS support or for those who prefer to browse certain websites with the HTTP protocol.

URL Rule is a valuable Chrome add-on for users who want to have more control over their browsing experience and avoid the automatic conversion from HTTP to HTTPS. It provides a simple and effective solution to the trouble caused by Chrome's default behavior.