Nothing is fetched automatically — the bookmarklet reads photos already loaded in your browser. Every photo runs through both heuristic analysis and AI-verified checks (Haiku and Hive).
For the most complete results: open the listing's full photo gallery and scroll all the way to the bottom before clicking the bookmarklet — listings load photos into the page as you scroll, so this is what gets every photo, not just the first several.
If nothing turns up at all, make sure the gallery is open (so at least some images have loaded), then click the bookmarklet again.