A responsive search ad works best when you give Google 12 to 15 distinct headlines, 4 descriptions, and pin the two or three assets that must always show. That mix lets the system test combinations while protecting your offer, your brand, and any claim you are legally required to keep intact.
Responsive search ads are the only search ad format Google accepts for new campaigns. You write up to 15 headlines and 4 descriptions, and Google assembles them into combinations at auction time. The account that wins is the one that feeds the system strong raw material and reads the reports it gives back. For where this fits in a full account, start with the Google Ads agency page.
Write 12 to 15 headlines that say different things
The single biggest lever is headline variety. Each of your 15 headlines can appear in position 1, 2, or 3, so repeating the same idea five different ways wastes slots. Aim for coverage across these angles:
- Your primary keyword, matched to the ad group theme
- A second keyword variant the ad group also targets
- The core benefit stated as an outcome, not a feature
- A specific number: price, years in business, response time, review count
- A call to action that names the next step
- A trust signal: licensed, insured, guaranteed, award, certification
- A differentiator that a competitor cannot honestly claim
Google reports headline count against Ad Strength, and accounts that supply 12 or more headlines rated Good or Excellent tend to see more impressions than those stuck at Poor with 3 to 5 headlines. Strength is not a ranking factor, but the combinations it opens up change how often you show.
A fast way to find distinct angles is to read your own reviews and sales calls. Customers tell you why they picked you in their own words. One might say you answered the phone at 9 p.m. Another might mention a flat quote with no surprise fees. Those become headlines that a competitor writing from a template will never match. Keep a running list of these phrases and refill your headline slots from it every month.
Keep headlines under the character limit and front-load meaning
Headlines cap at 30 characters and descriptions at 90. Assets that run long get truncated or rejected, and a headline that reads well at 30 characters gives the assembler more usable pieces. Put the keyword or the number in the first few words so it survives truncation on smaller screens.
Write each headline as a standalone thought. Because Google can show them in any order, a headline that only makes sense after another one breaks when the pair does not appear together. Test each line on its own before you save.
Count characters as you write, not after. Spaces count. A headline that reads great at 34 characters is not usable, and reworking it after the fact usually weakens the line. Draft to 28 or 29 characters so you have room and the full thought still lands.
Pin only what must always appear
Pinning locks an asset to a fixed position. Pin position 1 to a headline and only that headline can show there. It is the right move for a required legal disclaimer, a brand name you must protect, or an offer that must never be dropped.
The cost is real: heavy pinning collapses the number of combinations Google can test, which is why the Ad Strength meter drops when you pin. A workable pattern:
- Pin 2 or 3 headlines to position 1 so one of them always leads
- Pin 2 headlines to position 2 for a secondary message
- Leave the rest unpinned so the system can test freely
Pinning multiple assets to the same position keeps a guardrail while preserving some rotation. Pinning a single asset to a single slot is the most restrictive choice and should be reserved for genuine requirements.
Before you pin, ask whether the requirement is real or a preference. Marketers often pin a favorite line out of habit and lose dozens of combinations for no reason. Legal disclaimers, regulated claims, and trademark rules are real. A headline you personally like is not. Keep the pinned set as small as the rule allows.
Use the reports Google gives you
Two reports tell you what is working. The combinations report shows which headline and description pairings served most often. The asset report labels each asset Low, Good, or Best based on relative performance. Both live under the ad in the interface.
Act on the labels:
- Replace every Low asset with a fresh idea, not a reworded version of a Best one
- Keep Best assets and write new headlines in the same angle
- Give a new asset 2 to 4 weeks and a few thousand impressions before judging it
Asset labels need volume to populate. Low-traffic ad groups may show Learning or blank labels for weeks, so do not swap assets on a handful of impressions.
Read the combinations report for a second reason: it shows what the machine actually served, which is not always what you expected. If one weak headline keeps appearing in position 1, the system is telling you it lacks a stronger option for that slot. Feed it one. The report is a to-do list, not a scoreboard.
Match the ad to the ad group and the landing page
Ad Strength rewards relevance to the keywords in the ad group. If one ad group targets emergency plumbing and another targets water heater installation, they need separate responsive search ads with headlines that name each service. Stuffing both into one ad drags Quality Score and lowers relevance for both.
The landing page has to keep the promise. If a headline says free estimate, the page needs a free estimate form above the fold. A mismatch here raises bounce rate and cost per lead no matter how strong the ad copy reads. Tightening negative lists also protects relevance; see negative keywords in Google Ads for how to keep irrelevant queries out of these ad groups.
Add all the assets, then test the rest
Responsive search ads pair with sitelinks, callouts, structured snippets, images, and other assets. Ads that show with sitelinks and callouts occupy more of the results page and tend to earn higher click-through rates than a bare headline-and-description ad. Add:
- 4 to 6 sitelinks with descriptions
- 4 or more callouts covering trust and service points
- At least one structured snippet list
- Location and call assets when they fit the business
These assets are free to add and only show when Google predicts they will help, so there is little downside to supplying a full set.
Refresh assets on a schedule, not on a whim
The best accounts treat headlines like a rotating inventory. Set a monthly reminder to open the asset report, cut the Low performers, and add two or three new lines in the angles that already win. This keeps the ad from going stale and gives the system new material to test without a full rebuild.
Do not rewrite everything at once. If you swap all 15 headlines in a day, you throw away every label Google earned and restart the learning. Change two or three at a time. That way the report still means something, and you can trace a lift or a drop to the change you made.
Run two ads per ad group and compare
Two responsive search ads in one ad group give you a real comparison at the ad level while the system optimizes combinations inside each. Change one big thing between them: the lead offer, the primary call to action, or the core benefit. Then let both run until each gathers a few hundred conversions before you pick a winner.
Resist the urge to test three or four ads at once in a small account. Traffic splits too thin and neither ad reaches a clear result. Two is the right number for most budgets. Once one ad clearly beats the other over a full month, pause the loser, promote the winner, and build a fresh challenger against it.
A setup checklist
Before you publish a responsive search ad, confirm:
- 12 to 15 headlines, each a distinct idea
- 4 descriptions, each under 90 characters
- At least one headline with a specific number
- Pins used only for required assets, ideally 2 to 3 per pinned position
- Ad group theme reflected in the keyword headlines
- Landing page matches the strongest offer
- Sitelinks, callouts, and snippets attached
Run two responsive search ads per ad group when volume allows. That gives you a comparison point at the ad level while the system optimizes combinations within each one.
Related terms
You may see this topic described with related searches like google ads best practices, google ads examples, how to write perfect google ads copy, and rsa ads. Those phrases are useful when they clarify what the reader needs next, but they should still point back to one clear plan.
Frequently asked questions
How many headlines should a responsive search ad have?
Supply 12 to 15. You can publish with as few as 3, but more distinct headlines give Google more combinations to test and lift Ad Strength toward Good or Excellent. The gain comes from variety, not volume, so 15 near-identical headlines help less than 12 that each say something different.
Does pinning hurt performance?
Pinning reduces the combinations Google can test, which lowers Ad Strength. It does not directly lower rank. Pin when you have a legal, brand, or offer requirement that must always appear, and pin 2 to 3 assets per position rather than a single asset so the system keeps some room to optimize.
What is a good Ad Strength rating?
Aim for Good or Excellent. Strength measures relevance, quantity, and diversity of your assets, and stronger ads qualify for more combinations. It is a diagnostic, not a ranking signal, so do not sacrifice a required pin or a clear message just to move the meter one notch.
How long before I judge a responsive search ad?
Give it 2 to 4 weeks and enough impressions for the asset report to label assets Low, Good, or Best. Low-traffic ad groups take longer. Swap Low assets, keep Best ones, and write new headlines in the winning angle rather than pausing the whole ad early.
Can I still run expanded text ads?
No. Google stopped letting advertisers create or edit expanded text ads in 2022, and responsive search ads are the only search format you can build for new campaigns. Any old expanded text ads still serving should be rebuilt as responsive search ads so you get the combination testing and the full asset set.
How many descriptions should I write?
Write all 4. Descriptions cap at 90 characters and Google shows up to 2 at a time, so 4 gives the system a pair to test against another pair. Cover a different point in each one: the offer, the proof, the process, and the call to action. Repeating the same claim across all four wastes the slots.
How do you set up Google search ads?
Create a campaign around one intent group, write ads that match that search, choose the right landing page, add conversion tracking, and start with controlled match types. Expand only after search terms and lead quality are clean.
What are Search ads in Google?
In this guide, what are search ads in google points back to the practical work behind responsive search ads: what matters, what changes first, and how the result should be measured.
What is a good CTR on search ads?
In this guide, what is a good ctr on search ads points back to the practical work behind responsive search ads: what matters, what changes first, and how the result should be measured.
How to Google search ads?
Use Google Ads to choose the goal, location, keywords, match types, ads, extensions, budget, and landing page. The important part is measuring calls, forms, and sales so the account optimizes toward business outcomes.
What is the difference between Google Ads and search ads?
Choose the option that matches the job. If the decision affects traffic, leads, revenue, or trust, treat it as a question of risk and measurable outcome instead of a preference call.
What are Google Search ads?
In this guide, what are google search ads points back to the practical work behind responsive search ads: what matters, what changes first, and how the result should be measured.
Where to go next
Strong responsive search ads sit inside a well-structured account. If you want the surrounding moves, read our Google Ads tips and the guide to negative keywords in Google Ads. When you would rather have a team build and test the ads for you, the Google Ads agency page explains how that works.