Two advertisers bid on the same keyword. One pays noticeably more per click and still sits lower on the page. The difference is rarely the bid alone. It is ad quality, and Google Ads Quality Score is the window into how Google sees it. This guide explains what Quality Score measures, how it relates to Ad Rank, and 11 practical ways to improve the signals behind it so you pay less for the same traffic.
Key takeaways
- Quality Score is a 1 to 10 keyword-level diagnostic built from expected click-through rate, ad relevance and landing page experience.
- It is not an input to the auction itself. Google uses real-time quality signals to calculate Ad Rank, and Quality Score summarizes how those signals tend to look.
- Improving ad quality can raise your Ad Rank and lower the price you need to pay to hold a position.
- Most gains come from tighter ad group themes, sharper ad copy, better assets and landing pages that match the query.
- Fix the component rated “Below average” first. It almost always offers the biggest return.
What Quality Score is
Quality Score is a rating from 1 to 10 that Google Ads assigns at the keyword level. It estimates the quality of your ads and landing pages compared with other advertisers showing for the same keyword. A higher number means your ads and pages are more relevant and useful to people searching for that term than those of many competitors.
Some important details often get missed:
- It is calculated from searches that exactly match the keyword, which is why broad or phrase keywords may behave differently in the auction than their score suggests.
- Keywords without enough recent data show a dash rather than a number.
- It is relative. A score of 6 means “about average for this keyword’s competition”, not “6 out of 10 on an absolute scale”.
- It is visible in the Keywords view once you add the Quality Score columns, along with historical columns that show how the score and components have changed over time.
The three components of Quality Score
Each component is rated “Above average”, “Average” or “Below average” compared with other advertisers whose ads showed for the exact same keyword over the past 90 days.
Expected click-through rate
How likely your ad is to be clicked when it shows for this keyword. Google’s estimate takes into account past performance while adjusting for factors like ad position and the presence of assets, so it is not simply your raw CTR.
Ad relevance
How closely your ad matches the intent behind the search. If a keyword sits in an ad group whose ads talk about something else, this rating suffers.
Landing page experience
How relevant and useful your landing page is to people who click. Google looks at whether the page delivers on what the ad promised, whether it is easy to navigate, especially on mobile, and whether it is transparent and trustworthy.
How Quality Score relates to Ad Rank
This is the most misunderstood part of the topic. Google states that Quality Score is a diagnostic tool and is not used at auction time to determine Ad Rank. Instead, each auction evaluates real-time signals, including expected CTR, ad relevance and landing page experience in the context of that specific search, device, location and moment.
So why care about the score? Because it summarizes the same quality factors that the auction uses. When your Quality Score rises, it usually means the underlying auction-time signals have improved, which helps your Ad Rank. Higher Ad Rank lets you win better positions at the same bid, or hold the same position with a lower actual cost per click, since you generally pay only what is needed to clear Ad Rank thresholds and beat the advertiser just below you.
Pro tip: Do not chase a perfect 10. Chase lower cost per conversion. Quality Score is useful because it tells you where to look, but a keyword with a score of 6 that converts profitably is worth more than a 9 that never produces a lead.
How to diagnose Quality Score in your account
- Add the columns. In the Keywords view, add Quality Score, Exp. CTR, Ad relevance and Landing page exp., plus the historical versions of each.
- Sort by spend, not by score. A low score on a keyword that spends a few dollars a month is not a priority. A low score on one of your top ten spenders is.
- Find the weakest component. For each high-spend keyword, note which of the three components is “Below average”. That tells you whether the problem is the ad, the ad group structure or the landing page.
- Look for patterns. If many keywords in one ad group share a weak ad relevance rating, the ad group is too broad. If every keyword pointing to one URL has weak landing page experience, the page is the issue.
- Document a baseline. Record scores, CPC and conversion rate before making changes so you can measure impact.
11 ways to improve Quality Score and lower your CPC
1. Build tightly themed ad groups
Group keywords that share one intent. “Emergency plumber” and “water heater installation” belong in separate ad groups because they deserve different ads and pages. You do not need single-keyword ad groups, but every keyword in an ad group should be well served by the same message.
2. Put the core theme in your headlines
Include the main keyword concept in at least two or three of your responsive search ad headlines so that whichever combination Google shows, the ad reflects the query. Use pinning sparingly, for example to keep a compliance line or the core term in position one, because heavy pinning limits the combinations Google can test.
3. Write distinct, benefit-led responsive search ads
Fill responsive search ads with genuinely different headlines: the offer, a proof point, a differentiator, a price or timing cue and a call to action. Ad strength is a best-practice guide rather than a direct auction factor, but a varied set of headlines gives Google more room to find combinations people click.
4. Use every relevant asset
Sitelinks, callouts, structured snippets, images, call assets and, where eligible, price and promotion assets make the ad larger and more useful. Google includes the expected impact of assets in Ad Rank, and richer ads typically earn more clicks.
5. Maintain negative keyword lists
Irrelevant impressions drag down click-through rate. Review the search terms report regularly and add negatives for queries that do not match your offer, such as job seekers, DIY searches or unrelated product categories. Shared lists keep this consistent across campaigns.
6. Match the match type to the keyword’s maturity
Exact and phrase match keep impressions close to the theme of your ads. Broad match can work well with Smart Bidding, but run it where your ads and negatives are robust, and watch that it is not pulling in loosely related queries that dilute relevance.
7. Deliver message match on the landing page
If the ad promises “same-day water heater replacement”, the page headline should say the same thing above the fold. Visitors who see their query reflected immediately are more likely to stay and act. Our guide to landing page conversion rate optimization covers how to build pages for each intent.
8. Make pages fast and mobile friendly
Most search traffic is on phones. Test key landing pages with Google’s PageSpeed Insights, compress images, remove render-blocking scripts you do not need, and make sure buttons and forms are easy to use with a thumb.
9. Make pages transparent and easy to navigate
Show who you are, how to contact you and what happens after someone submits a form. Link to your privacy policy, avoid intrusive pop-ups that block content, and make sure Google’s crawler can access the page. Pages that are blocked, broken or slow to load cannot earn a good landing page rating.
10. Prune low-performing contexts
If certain locations, devices or hours generate impressions but rarely clicks, review your targeting. Tightening location settings to people in or regularly in your area, for instance, can remove impressions that hurt click-through rate without producing customers.
11. Rebuild or retire chronic low scorers
Some keywords will stay at 1 to 3 no matter what you do because your offer is not what most searchers want. Move them to a new ad group with a dedicated ad and page, test a more specific variation, or pause them and redirect budget to terms where you are the relevant answer.
Quick reference: component and fixes
| Component rated “Below average” | Likely cause | Fixes to try first |
|---|---|---|
| Expected CTR | Generic ad copy, missing assets, irrelevant impressions | Rewrite headlines around the searcher’s goal, add assets, add negatives, tighten match types and location settings |
| Ad relevance | Ad group mixes several intents; keyword theme missing from ads | Split the ad group by intent, include the keyword concept in headlines, write ads specific to each group |
| Landing page experience | Generic page, slow load, poor mobile layout, weak trust signals | Send traffic to an intent-matched page, improve speed, simplify forms, add contact and policy information, check crawlability |
| All three | Keyword does not fit your offer | Test a more specific variation, rebuild with a dedicated ad and page, or pause it |
How to measure the impact of your changes
Quality Score improvements should show up in business metrics, not just in a column. After making changes, give Google enough impressions to reassess, then compare against your baseline:
- Average CPC and cost per conversion for the affected keywords.
- Search impression share and the share lost to rank, which tells you whether quality changes are helping you win more auctions.
- Click-through rate and conversion rate, since better relevance should lift both.
- Historical Quality Score columns, to confirm the direction of travel for each component.
Watch out: Changing ads, landing pages and bids at the same time makes it impossible to know what worked. Change one major variable per ad group at a time, and annotate the date so you can match changes to results.
When to get a second opinion
If your high-spend keywords consistently show “Below average” components, or your CPCs keep rising while competitors seem to hold top positions with ease, the issue is often structural: ad groups built around too many intents, landing pages that serve every campaign, or tracking that misleads automated bidding. A structured paid media audit examines account structure, ad quality, landing pages and measurement together, then gives you a prioritized list of fixes. For the bigger picture of how Quality Score fits into a full paid search program, read our complete guide to PPC advertising.
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We review ad groups, copy, assets and landing pages to find where ad quality is costing you money, and we prioritize the fixes that will lower your cost per conversion fastest.
