Also, apart from the video downloader Firefox functionality, Airy deals with MP3 files just as easily in case you only need the soundtrack of the YouTube videos you like. More than just a YouTube HD downloader, Airy offer complete functionality like downloading entire playlists with a few clicks. If you need a reliable Firefox video downloader, Airy provides a complete solution to all your needs. Darya Smith Jan 10, Best Firefox YouTube downloaders. The add-on lets you do things like eliminating annoying ads, adjusting video quality automatically, repeating video, and many more. By using a browser extension YouTube Center, you can improve YouTube performance so that downloading desired videos from the platform will become much more comfortable. Thanks to a JavaScript library it offers, you can enjoy having audio files easily extracted from your FLV videos. YouTube Video and Audio Downloaderanother convenient Firefox add-on, is great for saving videos containing subtitles. In addition, it provides numerous convert options available for iPod, iPhone, Galaxy Tab, and many other useful devices. A large army of users that Video DownloadHelper enjoys today makes this YouTube video downloader add-on for Firefox one of the most commonly used browser extensions. Let's now take a closer look at some most popular solutions which will perfectly fit with your Firefox browser. There's no denying that a browser add-on is one of the easiest ways to save media content from YouTube nowadays.