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TikTok: grayscale profile-grid thumbnails

Desaturates the video thumbnails on profile grids, restoring colour only when you hover one.

Code to copy

/* Grayscale the video thumbnails on profile grids until hovered */
[data-e2e="user-post-item"] picture,
[data-e2e="user-post-item"] img,
[data-e2e="user-liked-item"] img {
  filter: grayscale(100%) !important;
  transition: filter 0.2s ease;
}
[data-e2e="user-post-item"]:hover picture,
[data-e2e="user-post-item"]:hover img {
  filter: grayscale(0%) !important;
}

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. Paste the code into the rule's CSS panel and save — the effect appears instantly.