Google Ad Strength: How to Improve It, and When to Ignore It
Ad Strength is the meter beside every responsive search ad, running Incomplete → Poor → Average → Good → Excellent. It rates how many distinct text assets you have given Google and how well they match the keywords you are bidding on. Most accounts treat it as a score to maximise, and the single most useful fact about it is the one Google states plainly and almost nobody repeats: it is not used to calculate Ad Rank, Quality Score, or auction wins.
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That does not make the meter useless. It makes it a checklist, and a good one. What it is not is a performance metric, and treating it as one leads people to damage working ads to move a label.
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Use the tool free →What Ad Strength actually measures
Google's documentation describes three inputs:
- Asset–keyword relevance — whether your headlines and descriptions actually contain the terms you are targeting.
- The number of headline and description combinations available — how much material the system has to test.
- Sitelink sufficiency — whether the ad has enough sitelinks alongside it.
Read that list again and notice what is missing: nothing about whether the copy is any good. Ad Strength cannot tell a compelling offer from a dull one. It measures how much varied, relevant raw material you have supplied.
What Google says it does not do
Straight from the Ad Strength documentation:
The Ad strength rating of an ad doesn't directly influence your ad's serving eligibility. Instead, the Ad strength rating identifies opportunities (during the ad creation or editing stage) to improve your ads to optimize their performance.
And, on the auction itself: Ad Strength is a feedback tool for asset diversity and combination testing — it isn't used to calculate Ad Rank, Quality Score, or auction wins.
An "Excellent" ad and an "Average" ad enter the same auction on the same terms. If the Average one converts better, it is the better ad. Full stop.
The five things that actually move the rating
Google names these directly, and they take about twenty minutes:
- Put your top-performing keywords in the copy, naturally. Relevance is the heaviest input. One or two headlines carrying the actual search term is usually the difference between Poor and Good.
- Supply the maximum assets — up to 15 headlines and 4 descriptions. Most accounts stop at 6 and 2, leaving the largest single improvement untouched.
- Make them genuinely unique. Three rewordings of "Fast Free Shipping" count as one idea. Vary the angle: price, proof, delivery, guarantee, use case, objection.
- Add sitelinks — at least six. Sitelink sufficiency is an explicit input, and it is the one people forget because it lives outside the ad.
- Use pinning sparingly. Every pin removes combinations from the pool, which is exactly what the meter is scoring.
When to ignore it
There are good reasons to accept a lower rating, and knowing them is what separates an operator from a checklist-filler:
- A legally required disclaimer, or a brand name that must appear first. Pin it. Take the downgrade. A compliance requirement outranks a meter.
- A proven message you would be diluting. If two headlines carry the offer that produces your conversions, adding thirteen weaker ones to reach "Excellent" hands the system thirteen new ways to show something worse. Add variety in angle, not in filler.
- Genuinely narrow products. Some offers do not have fifteen honest things to say. Inventing five more to satisfy a meter produces vague copy, and vague copy is what the meter cannot detect.
- A tightly themed ad group. If every keyword is a variation of one term, high relevance is easy and the rest of the rating matters less.
The failure mode worth naming: an account chasing Excellent across every ad group, rewriting winners into blandness, and reporting the improvement as a result. The label moved. Nothing else did.
A twenty-minute pass that is worth doing
Even though it is not a ranking factor, an ad rated Poor usually is a thin ad — the rating is a symptom, not the disease. So:
- Open the worst-rated ad in the account.
- Add headlines until you reach 15, each one a different argument. Steal them from your product page, your reviews and your returns policy.
- Take descriptions from two to four.
- Check at least one headline contains the ad group's main keyword as a human would write it.
- Add sitelinks until you have six.
- Remove every pin that is not a legal or brand requirement.
Then leave it alone long enough to gather data, and judge it on conversions — not on the colour of the meter.
Frequently asked
Does Ad Strength affect Ad Rank? No. Google states it is not used to calculate Ad Rank, Quality Score or auction wins, and that the rating does not directly influence serving eligibility. It is guidance offered while you write.
Is "Poor" Ad Strength worth fixing? Usually yes, but for the underlying reason rather than the label: a Poor rating normally means too few assets or too little relevance, and both genuinely limit what the system can test.
Can an ad be Excellent and still perform badly? Easily. Ad Strength measures asset quantity, variety and keyword relevance. It has no view on whether the offer is attractive.
What is the fastest way from Poor to Good? Add unique headlines until you hit 15, work the ad group's main keyword into one or two of them naturally, and add sitelinks.
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