Facebook has a guideline regarding the amount of text that can be included in ad images. While there used to be a strict 20% text rule, which limited the amount of text allowed in an ad image overlay, Facebook has since relaxed this policy. As of my knowledge cutoff in Facebook no longer enforces a specific percentage limit for text in ad images.
Instead of a hard percentage limit, Facebook now uses a rating system to assess the amount of text in an ad image. The rating system has four categories:
1. Image Text: OK: This means the image contains minimal or no text, and it's likely to have normal delivery.
2. Image Text: Low: This means there is a moderate amount of text in the image, which may result in slightly reduced reach and delivery.
3. Image Text: Medium: This means there is a high amount of text in the image, and it may experience significantly reduced reach and delivery.
4. Image Text: High: This means there is too much text in the image, and it may have very limited or no delivery at all.
While Facebook no longer enforces a specific percentage limit, it is still generally recommended to limit the amount of text in your ad images. Advertisements with minimal or no text tend to perform better and have broader reach. Keeping text concise, clear, and integrated into the overall design of the ad image is a best practice to ensure optimal delivery and engagement.