Chrome, Edge or Brave · Netflix web · Free to start.
1
Create your account
Free, no card. You get your license code instantly.
2
Download & load the extension
Unzip · open chrome://extensions · turn on "Developer mode" · "Load unpacked" → the folder.
3
Activate & pick the sound
Click the icon → paste your license → Activate. Choose Beep, Silence or Whistle. Open Netflix and done.