W2C link checker
Paste any Taobao, Weidian, 1688, Tmall or Xianyu product link — short share links (m.tb.cn, ai.weidian.com) work too. Haulkit validates it, pulls the title, and tells you if it's already in the image database.
Also try the image search (find links from a photo) or the bulk importer (paste a whole W2C list).