BigConverter - YouTube to MP3 & MP4 per BigConverter

BigConverter.com - turns any YouTube page into a one-click MP3 or MP4 download.

Features

• Convert in one click - a green "MP3 / MP4" button is added next to the Like / Share / Save buttons on every YouTube video, short, and playlist page.
• Toolbar popup - click the BigConverter icon for instant Convert to MP3 / Convert to MP4 buttons with a thumbnail preview of the current video.
• Right-click anywhere - convert any YouTube link from any page via the context menu.
• Playlists supported - open any YouTube playlist and convert the whole list at once.
• Works everywhere YouTube does - youtube.com, music.youtube.com, m.youtube.com, youtu.be, embeds and shorts.

Why use it

• No sign-up, no account, no tracking - the extension does not collect, store or transmit any personal data.
• No software to install - conversion happens on the BigConverter website, nothing runs on your machine besides the browser.
• Free and unlimited - MP3 up to 320 kbps, MP4 up to 1080p.
• Tiny - under 30 KB.

How it works

When you click Convert, the extension opens a new tab on BigConverter with your video URL already filled in. The conversion happens on the BigConverter site, which fetches the audio or video from YouTube's servers and delivers a download link.

The extension itself only reads the URL of the YouTube tab you're on, and only when you click. It does not read the page content, your history, cookies, or any other data.

Privacy

The extension declares "no data collection" in its manifest. No analytics. No telemetry. No third-party scripts. The complete source is reviewed by Mozilla before publishing.

Support

• Website: https://en.bigconverter.com
• FAQ: https://en.bigconverter.com/faq
• Contact: https://en.bigconverter.com/contact