What It Is
A Responsive Search Ad is the standard Google search ad format. You provide up to 15 headlines and 4 descriptions, and Google’s system mixes and matches them in real time to assemble different ad combinations for different queries. The system learns which combinations perform best and serves the strongest ones more often. RSAs replaced the older Expanded Text Ads in 2022 and are now the only search ad type Google accepts.
Why It Matters
For a local service business, RSAs do two useful things at once: they let one ad unit cover dozens of search variations, and they help Quality Score because Google can almost always find a combination that closely matches the searcher’s exact wording. The catch is that you have to give the system enough good raw material to work with. Three near-identical headlines waste the whole point of the format.
Common Misconception
That you have to fill in all 15 headlines or else. You do not. Twelve well-written, distinctly different headlines beat 15 mediocre ones every time. Variety matters more than volume: include the service, the location, a benefit, a trust signal, and a call to action across the set, and avoid restating the same idea five ways.
FAQ
How many RSAs should I run per ad group?
Two or three is plenty. More than that and you spread Google’s learning thin, which slows down the system’s ability to find the strongest combinations.
Should I pin my headlines?
Sparingly. Pinning one headline to position 1 (your business name or a required compliance phrase) is fine. Pinning everything cancels the algorithm’s job and usually raises your cost per click.
Can I see which combinations performed best?
Only at the asset level. Google reports each headline and description as Best, Good, or Low, but it does not show full combination-level data. You get directional signal, not granular reports.
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