: One of the most long-standing tools, it adds a simple "Download" button to the YouTube player. It supports superfast downloads in MP4 (up to 1080p) , FLV, and MP3 (256Kbps) formats.
: Type your preferred downloader (e.g., "Video DownloadHelper") into the search bar. Click "Add to Firefox" and then confirm the permissions. Navigate to YouTube : Open the video you wish to save.
: Click the extension's icon in your toolbar or the "Download" button now appearing on the video page. Select MP4 and your desired resolution. Comparison of Popular Tools Max Quality Key Feature Easy YouTube Express Quick 1080p downloads Native UI button Video DownloadHelper Many sites (X, Twitch) Detects complex streams UDL Helper Shorts & Screenshots Universal social media support HLS Downloader Live stream replays Merges fragmented segments Important Considerations
: A powerful extension that detects videos on almost any site. It offers quick downloads for 720p, 1080p, or 4K and includes advanced features like batch downloading. How to Install and Use a Downloader on Firefox Open Firefox : Navigate to the Firefox Add-ons store.

