If you value and absolute freedom : -> Learn yt-dlp . You will never ask “which downloader works?” again.
If you don't want to install software, these web-based tools work in any Firefox tab. mp3 downloader youtube firefox free
I can provide specific configuration steps or alternative methods based on your preferences. If you value and absolute freedom : -> Learn yt-dlp
: Provides instant download links in multiple formats directly on the YouTube page. I can provide specific configuration steps or alternative
: Version 24.2 (released early 2026) fixed major "0-byte" download issues caused by YouTube's latest security patches . View on Firefox Add-ons . YouTube™ to MP3 (by Wext) Verdict : Best for a lightweight, audio-only experience .
Downloading videos or audio via third-party tools directly violates YouTube’s terms of service. While Google rarely targets individual users for this, it does actively block the tools themselves.
: Specifically designed for audio extraction, this add-on allows you to choose from five different audio qualities (defaulting at 128kbps). UDL Helper