I adapted the Swedish sensitiveViewer script for use on the Dutch Wikipedia. While implementing it, I made several major improvements and bug fixes that you might consider incorporating into the original version. Here is a summary of the new features I added:

• Interactive "Reveal" Button: Instead of just blurring the image permanently, the script now overlays a warning button directly on top of the blurred image (e.g., "Warning: Sensitive image"). Clicking this button instantly removes the blur and the button itself, allowing users to choose whether they want to see the image. (Depending on the image size it blurs, gives a short message or the full message)

• Support for Dynamic Content (Popups/Search): I added a MutationObserver to ensure that images loaded dynamically after the initial page load are also correctly identified and blurred. This works for the Page Preview popups (mwe-popups), the search bar typeahead dropdown (cdx-menu), and dynamically loaded search results.

• Handling of Small Thumbnails: Since overlaying a large button on tiny thumbnails (like in the search dropdown results) makes the page look messy, the script detects the context or size of the image. For tiny thumbnails (.cdx-thumbnail__image), it solely applies the blur without appending the interactable overlay button. For slightly larger thumbnails (like on the Special:Search page), it dynamically shortens the warning text and shrinks the font size via CSS to make it fit appropriately.

You can find the updated code on https://nl.wikipedia.org/wiki/MediaWiki:Gadget-sensitiveViewer.js

Otherwise not visible on board

Ah thanks. Did not know that!