Facebook: We're getting better at measuring the 20 percent rule

Facebook announced to advertisers that it has gotten better at measuring its own 20 percent rule — the guideline that an image advertisement can contain no more than 20 percent text. This has no bearing on organic or unpaid posts from a page or profile.

Facebook put a banner atop the News Feed of recent advertisers, saying that the company has improved the accuracy of the way it measures the 20 percent maximum. The site encouraged users who have boosted images to try again, saying that pictures that may have failed the test before might pass now.

So what changed?

A Facebook spokesperson explained the changes to Inside Facebook:

We made some recent changes to the accuracy of measuring of our 20% text policy.