Per https://wikimediafoundation.org/wiki/Resolution:Wikimedia_Foundation_Guiding_Principles#Freedom_and_open_source , it would be great to first investigate the FOSS tools available.

I know Parsoid already has a tool for this, https://www.mediawiki.org/wiki/Parsoid/Visual_Diffs_Testing . This may not be exactly what's needed, but I'm sure there are other options out there in addition.

Sorry, I thought this was about visual diffing. I see now it's about visual detection of controls, and then testing the interaction with them. I still support investigating the FOSS landscape more including Sikuli (people have gotten this working fully headless, see my comment, T56393#1085423).

Related podcast: Applitools – How to Create Reliable Visual Validation Tests

Related webinar: Automated Visual Testing In The Cloud: Enhance Your Cross-browser Coverage.

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@dduvall and @zeljkofilipin looks like we can advertise Applitools to devs and designer then let them figure out whether they can be interested in. I don't think it is worth keeping this task under our umbrella and we should probably just close it.

See also the more general / parent task T64633: Jenkins: Set up perceptual diffs (visual regression testing)

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