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"A couple weeks ago, we reported on a possible Google Image Search update but that discussion phased out a bit.Today, I spotted another WebmasterWorld thread with comments from someone I know who is obsessed with tracking Google Image search rankings.  He said, besides for the design change:Many results have changes their position. A lot of new results appears - and other passed. It is the biggest change of results since months. But until now I have no idea why. Perhaps (!) it's a change on the weight of semantic page content. Seems a little bit as onpicture factors like filename or ALT-text is not as important than before.Maybe there is a slow update being pushed out to the image results?Forum discussion at WebmasterWorld."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.seroundtable.com/google-image-update-16025.html>