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Show a custom watermark on pages of configured domains Notice! is a browser extension that displays custom watermarks on the websites you choose. Create per-domain watermark rules — pick a domain, write your text, and the watermark appears the moment you open a matching page. Each rule can be toggled individually and fully customized: text, color, opacity, rotation angle, and tiling density, keeping the watermark clearly readable on both light and dark sites. Rendered with an ink-style blend mode, the watermark merges naturally into the page — visible at a glance, yet it never covers text or blocks clicks, scrolling, or any interaction. Changes apply instantly without refreshing, and single-page app navigation is followed automatically. Why install it: mark internal tools and staging environments so you never confuse them with production; stamp confidential pages so screenshots carry a visible, traceable reminder; or add a subtle visual cue to any site that needs one. The interface is bilingual (English and 中文) with a manual language switch. All settings are stored locally in your browser — no network requests, no data collection. Click the icon, add your first rule, and you're done.
Sep 21, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.