How many headlines, images, and short descriptions should be prepared for a responsive display ad according to best practices?

For a responsive display ad, best practices recommend preparing 5 headlines, 5 images, and 5 short descriptions. This allows the Google Ads system to dynamically mix and match these elements to determine the most effective combinations for user engagement and performance. By providing this variety, advertisers can optimize ad delivery based on different audience segments and contexts, enhancing overall campaign performance.

Having 5 of each element is essential because it strikes a balance between variety and simplicity, enabling the algorithm to test combinations more effectively while keeping the ad structure manageable for updates and revisions. Preparing fewer elements might limit the algorithm's ability to find optimal combinations, while having too many could complicate the process without significantly improving results.