The "Old Version Bilibili User-Agent Modifier" is a Chrome extension developed by isilme132132. This free tool falls under the Browsers category, specifically in the Add-ons & Tools subcategory. By utilizing this extension, users can modify their user-agent headers for https requests to bilibili.com, enabling them to access the older version of the website. This functionality allows users to bypass the new UI design that may not be optimized for desktop usage.

With the "Old Version Bilibili User-Agent Modifier," users can seamlessly navigate the bilibili.com platform using an older version of the Chrome browser, ensuring a more user-friendly experience tailored to desktop users.