What if a headline moves and the test doesn't match correctly?

Our code looks for the structure of the slots to be similar before matching them. This usually doesn’t match when a different type of medium (image or video) is introduced into a slot. However, it depends on your site architecture — this may work for some sites, but as a general rule, it doesn’t. If you want to learn more, reach out to support@chartbeat.com. Be sure to include as much information about what pages you’re testing on, when they break, and any implementation issues you might have had in the past.


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