Yeah, I think this has been around for at least a year. For others reading this, if you're looking for long tail content (e.g. running a ∃ type query), my expe

Yeah, I think this has been around for at least a year. For others reading this, if you're looking for long tail content (e.g. running a ∃ type query), my experience with reverse image engines is roughly: Yandex > Google = Bing > Tineye For niche content also worth checking KarmaDecay and SauceNao if relevant. Bing's gotten a bit better recently, and with the big boys playing in the space Tineye's quality has definitely dropped off. As far as I can tell Baidu's reverse image search is just complete garbage and never has any useful results. I rank Yandex higher than Google not because their algorithm is better (although it does seem to be a bit more tineye-style forgiving in terms of editing), but also because they seem to greedily index images they crawl in a way that google doesn't (e.g. AFAICT a lower percentage of the images available in google's text-based image search index are available for reverse-image searching than on yandex) For non long-tail reverse image searching (e.g. I just want a larger size or to find the original source) I mostly stick with Google though, because they seem to make it easiest to binary search the search timeframe like how they caught DPR. If you're on Firefox (might be a chrome version avail now too?) Image Search Options is the extension you want so you can compare the different engines with a single click. If others have good newer resources I'd be interested to hear about them.