lightbulb_outline Blog Post: Fast ads matter (web.dev)

Reduce ad density in initial viewport

Overview

This audit ensures that visible ads take up no more than 30% of the initial viewport. An ad density greater than this has been found to negatively impact user experience1.

Recommendations

Depending on the situation, slots should either be spaced farther apart or have a reduced size.

More information

Ad Experience: Ad Density Higher Than 30%
What publishers need to know now about creating a better ad experience