Is there a simple way to extract MP3 from YouTube on Mac

addonccrop + CRX Emulator. And this can be used for extracting mp3 from youtube videos on macOS.

These tools are often used to install YouTube downloader extensions that have been banned or removed from the Chrome Web Store. 

1. Find a video downloader extension from chrome web.

2. Use Addonccrop or a CRX downloader site to get the CRX file.

3. Install it manually in Chrome via Developer Mode.

How to ow to Install a CRX File on Chrome (Mac)

1. Download the CRX file from Addonccrop or similar site
2. Open Chrome and go to: chrome://extensions/
3. Enable  Developer mode (toggle in top-right)
4. Drag the CRX file onto the extensions page
5. Click "Add extension" when prompted

Practical Issues

Breaking Changes: YouTube frequently changes its code, causing downloader extensions to stop working

Quality Limitations: Browser extensions typically offer lower audio quality than desktop apps

Browser Performance: Extensions can slow down your browser and consume significant memory

While Addonccrop + CRX Emulator can be used to install YouTube downloader extensions on Chrome for Mac, this approach carries significant security risks, reliability issues, and quality limitations. For extracting MP3 from YouTube on macOS, native applications or command-line tools are generally safer, more reliable, and produce better results without compromising your browser's security or performance.

If you absolutely must use a browser extension to extract mp3 from youtube video on macos, stick to well-known ones still available on the Chrome Web Store and understand they may stop working at any time due to YouTube's ongoing efforts to block such tools.