Step 1: Install a user script manager
To use the Youtube Downloader Add-on for your Browser you need to install first a user script manager. Which user script manager you can use depends on which browser you use.

• Chrome: Tampermonkey or Violentmonkey
• Firefox: Greasemonkey, Tampermonkey, or Violentmonkey
• Safari: Tampermonkey
• Microsoft Edge: Tampermonkey
• Opera: Tampermonkey
• Maxthon: Violentmonkey
• Dolphin: Tampermonkey
• UC: Tampermonkey
• Qupzilla: (no additional software required)
• AdGuard: (no additional software required)

Step 2: Install Youtube Downloader

After a user script manager is installed, click here to install Youtube Downloader to your browser.

Step 3: Make sure that you use the new YouTube Layout
Visit https://www.youtube.com/new to check and update your YouTube Layout.

Step 4: Use Youtube Downloader
Visit YouTube, press the orange download button below the video and download the converted mp3.

Our Add-on is listed here:

• Youtube Downloader (Firefox)
• Youtube Downloader (Opera Mini)
• Youtube Downloader (Greasyfork)
• Youtube Downloader (Openuserjs)
• Youtube Downloader (Github)

Hopefully it is useful for all users