Simple YouTube to MP3/MP4 Converter and Downloader 的评价
Simple YouTube to MP3/MP4 Converter and Downloader 作者: UsualBeings
Firefox 用户 13529950 的评价
评分 3 / 5
来自 Firefox 用户 13529950, 7 年前There are some problems of using this after the recent update of Firefox version. It seems that this extension is slowing down YouTube (with a yellow bar error message)