Responsive search ads are the standard text ad in Google Search campaigns. You write the headlines and descriptions. Google mixes them into ads that fit each search.
That only helps if your text gives Google real choices. This guide shows how to write a varied set. It also covers pinning, Ad Strength, and how to judge each line.
Reporting note: We checked this guide against Google Ads Help on October 10, 2026. We also checked Google's ad policies that day.
Key takeaways
- Each ad takes up to 15 headlines and 4 descriptions
- Every line must make sense alone and in any order
- Cover different angles: service, offer, proof, place, and next step
- Pin only text that must show, like a required disclaimer
- Ad Strength doesn't set Ad Rank, so judge lines by conversions
How do responsive search ads work?
You give Google up to 15 headlines and 4 descriptions for one ad. Each ad needs at least 3 headlines and 2 descriptions. Google then tests combinations and learns which work best for each search.
Headlines can run up to 30 characters. Descriptions can run up to 90. The two display path fields take up to 15 each.
A searcher sees up to 3 headlines and 1 or 2 descriptions. Headline 1 and Description 1 usually show. The rest appear when Google predicts they'll help or space allows.
Google may also show unused lines as extra links under your ad. So every line must make sense alone and in any order. That one rule shapes everything below.
Why do 15 rewordings of one headline fall short?
Many accounts fill every slot with near copies. Think "Local Plumber," "Plumber Near You," and "Your Local Plumber." Google has little to test when every line says the same thing.
Google's Ad Strength guide rewards asset diversity. That means lines that cover different selling points, not repeated wording. Google's editorial policy also bars gimmicky or needless repetition.
Variety helps the reader too. Each search comes from a person with a different worry. One cares about price, another about speed, another about trust.
Build your headline set in five groups
Don't write 15 random lines. Plan two or three headlines in each group below. You'll fill most of the slots with real variety.
- Service: what you do, with your main keyword kept whole
- Offer: a real deal or terms you can back up
- Proof: facts a customer can check, like a license
- Place: the city or area you serve
- Next step: a clear call to action, like booking online
Keep each keyword inside one headline, not split across two. Google says a keyword over 30 characters can go in a description instead.
Write your first three headlines as if they'll show together. Google suggests this in its own best practices. Then check that each line still reads well alone.
A sample set for a hypothetical plumber
Say you run a hypothetical plumbing company in Tampa. Here's how part of a set might look across the five groups. Swap in your own facts.
Scroll sideways to read the full table.
| Group | Sample headline | Why it's there |
|---|---|---|
| Service | Emergency Plumbing Repair | Matches the main keyword |
| Service | Water Heater Installation | Covers a second service |
| Offer | Free Estimates on Repipes | Only if the offer is real |
| Proof | Licensed and Insured in FL | Only if it's true |
| Place | Serving Tampa and Brandon | Shows the service area |
| Next step | Book a Visit Online Today | Tells people what to do |
Every line fits in 30 characters. None of them lean on hype words or big claims. Those are hard to back up.
Google's misrepresentation policy bars unreliable claims. The FTC also expects ads to be truthful and backed by evidence. So write only what you can prove.
Write descriptions that finish the thought
You get up to 4 descriptions of 90 characters each. Use them for detail a headline can't hold. Think service area, hours, or what happens after someone books.
- One on the main service and who it's for
- One on a real offer or how quotes work
- One on proof, like licensing or warranty terms
- One with a clear next step
Like headlines, each description must work alone and in any order. Leave out phone numbers, since Google's editorial policy bars them in ad text. Add a call asset instead.
When is pinning worth it?
Pinning locks a line to one spot in the ad. You can pin to Headline 1, Headline 2, or Description 1. Pinned text in those spots always shows.
Google says Headline 3 and Description 2 may not show, even when pinned. Pinning also cuts the combinations Google can test. It can lower Ad Strength too.
So pin only when a line must appear in every ad, like a required disclaimer. If you pin, pin two or three different lines to that spot. Google then still has choices to test.
Does Ad Strength matter?
Ad Strength rates each ad from Poor to Excellent. It looks at keyword use, the number of assets, their variety, and sitelinks. Google suggests aiming for Good or better.
But Google states that Ad Strength doesn't directly affect whether your ad serves. It isn't used for Ad Rank or Quality Score either. Treat it as a writing checklist, not a goal.
It also ignores what happens after the click, like your landing page. An ad rated Excellent can still send people to a weak page. The page has to do its part too.
How should you judge each headline?
Google retired the old Low, Good, and Best labels for assets. The asset report now shows full stats for each line from June 5, 2025 onward. That includes impressions, clicks, cost, and conversions.
To find it, go to Ads in the Campaigns menu. Find your responsive search ad. Then select View asset details.
Read the numbers with care. Google counts each asset once per impression it appears in, so totals won't add up. Google calls ratios like CTR and CPA directional only.
A simple rule: give new lines time to gather data. Then replace lines that get impressions but few conversions. Test one new angle at a time.
All of this depends on accurate conversion tracking. Our conversion tracking guide covers the setup.
What about Google's AI-written headlines?
Google can write extra headlines and descriptions for your ads. Google calls this setting text customization. Its old name was automatically created assets.
Google builds these lines from your site, your ads, and your keywords. You can see them in reporting and remove ones you don't want. So keep the claims on your site accurate and current.
The setting now sits with AI Max for Search campaigns. Our AI Max guide covers what to check before you turn it on. Either way, review new lines as you'd review your own.
A quick check before you publish
Run through this list before an ad goes live. It takes a few minutes. It can save you from a policy flag or a wasted test.
- Headlines spread across service, offer, proof, place, and next step
- Main keywords kept whole inside single headlines
- No claims you can't back up
- No phone numbers in the ad text
- Pins only where a line must show
- A landing page that matches the ad
- Conversion tracking that records real actions
Google also suggests at least two responsive search ads per ad group. It recommends a different final URL for each one.
Short on time to write and test? Our Google Ads management handles the copy and the testing. It aims to turn more of your clicks into calls and bookings.