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Netflix: toggle grayscale box art

Turns grayscale box art on or off for every title cover on the page with one click.

Code to copy

// Toggle grayscale box art across the whole page with one click
const ID = 'jz-ntx-grayscale';
const old = document.getElementById(ID);
if (old) { old.remove(); }
else {
  const s = document.createElement('style');
  s.id = ID;
  s.textContent = '.title-card img,.boxart-image{filter:grayscale(100%)!important}';
  document.head.appendChild(s);
}

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Enable the action panel, add a button in the Actions tab and paste the code into it — run it with one click.