Firefox add-on that allows MP3 conversion for free, video conversion, audio extraction from video, video and audio combining, multiple videos combined into one, maximum volume adjustment, video resolution change, video rotation, sound
Youtube to MP3 Converter Free – Get this Extension for 🦊 Firefox (en-US)
Best YouTube to MP3 Converter for Mac and Windows in 2023
Simple YouTube to MP3/MP4 Converter and Downloader – Get this Extension for 🦊 Firefox (en-US)