SpoilerBlock For YouTube

Hide YouTube previews that contain unwanted keywords – Take back control of your feed! Don't ruin the experience for yourself - Cover previews automaticly! FEATURES: Keyword‑based filtering – add any words or phrases you want to block. Real‑time hiding – uses "MutationObserver" to catch new videos as they load. Visual overlay – blocked previews are covered with a stylish overlay that shows: the triggering keyword so you know why it was hidden. Blocking preview – the overlay can also include a randomized phrase from a preset list for variety, in addition to showing the triggering keyword. Works everywhere on YouTube – homepage, search results, sidebar recommendations, and even Shorts (with a special vertical overlay). Canvas‑generated overlays – each block is a generated image, cached for performance. Easy management popup – add or remove keywords with duplicate detection. One‑click enable/disable – turn the filter on or off without losing your keyword list. Lightweight and performant – minimal impact on browsing.