YouTube繁英字幕 is a Chrome extension developed by hoctiho. This free tool falls under the Browsers category, specifically in Add-ons & Tools. The program's main functionality lies in automatically converting YouTube subtitles from traditional Chinese to English, catering to users who prefer watching videos with traditional Chinese and English subtitles.

With YouTube auto TC EN Subtitle extension, users can seamlessly transition between watching videos with English subtitles to those with traditional Chinese and English subtitles. The extension operates by automatically converting subtitles from Hong Kong traditional Chinese to Taiwan traditional Chinese, then to English, and finally to simplified Chinese. This feature streamlines the viewing experience for individuals accustomed to traditional Chinese and English content.