Mozilla should consider banning all extensions that solely exist to download or convert YouTube content, as they consistently violate the Add-on Policies section 5.4 (deceptive or harmful functionality).
Assuming you find a semi-functional extension (e.g., "Easy YouTube MP3 Downloader" – now removed from stores), here’s the real-world performance: firefox mp3 youtube downloader
: One of the oldest and most trusted add-ons, it offers 256kbps HQ MP3 downloads and integrates a minimalist button directly onto the YouTube page. Mozilla should consider banning all extensions that solely
Some popular Firefox add-ons for downloading MP3 files from YouTube include: Firefox’s security model was never designed for this
You are trading a 30-second convenience for potential malware, terrible audio quality, and broken promises. Firefox’s security model was never designed for this use case – any extension claiming to do it natively is either lying, using a dangerous remote API, or both.
Firefox reviewers have repeatedly removed extensions from this category. Notable risks:
Because of the restrictions on the official store, the functionality has largely moved to two other methods: