One of my tasks as QA was related to visual testing. I tested:
A dashboard because on some of the deploys, one chart was missing. I added visual testing to detect failures early in daily test execution without manual testing.
A transportation app where you can see all vehicle location updates on the map. You can manually change the vehicle status, and you need to see that the map displays the status and the line between pickup and drop-off changes color accordingly to the status.
A service app, where users mark tree locations on a Google Maps with markers so the trees can be pruned after the budget is approved.
There are different tools to perform visual testing, such as Applitools and Percy, but Playwright includes visual testing for free.
