Finding a reliable is becoming rarer as modern devices move toward high-definition formats like MP4 and WebM. However, 3GP remains essential for legacy mobile devices and low-bandwidth environments where file size is the primary concern.
Since it cannot be hosted on the official Chrome Web Store, you must install it directly from the Addoncrop website . It supports a wide range of formats, including 3GP, FLV, and MP4 , and allows for 4K downloads. youtube video 3gp download extension
This is one of the highest-rated extensions on the Mozilla Add-ons Store . It adds a simple "Download" button directly to the YouTube interface, allowing you to choose 3GP along with 720p or 1080p MP4 options. Finding a reliable is becoming rarer as modern
