Quality score

Quality score is Google Ads' rating of the overall quality and relevance of your keywords, ad copy, and landing pages. It is reported as a number from 1 (worst) to 10 (best) at the keyword level and is updated each time a keyword is eligible for an auction.

Quality score matters because it is a direct input to the ad auction. Ad rank, which determines whether your ad is shown and in what position, is calculated as your bid multiplied by your quality score (simplified). This means a keyword with a quality score of 8 and a bid of 2 pounds can outrank a competitor bidding 4 pounds with a quality score of 3. Higher quality scores let you achieve better positions at lower costs.

The financial impact is significant. Keywords with above-average quality scores pay less per click than the benchmark, sometimes 30% to 50% less. Keywords with below-average quality scores pay a premium, sometimes 50% to 400% more. Over an entire account, the difference between average and above-average quality scores can represent thousands of pounds in monthly savings.

Quality score is composed of three sub-components, each rated as below average, average, or above average: expected click-through rate (how likely users are to click your ad), ad relevance (how closely your ad matches the intent behind the search query), and landing page experience (how useful and relevant your landing page is to someone who clicked the ad).

Quality score is built from three distinct components. Understanding each one is essential for targeted improvement because a score of 5 can result from very different underlying problems.

Each component is rated as below average, average, or above average relative to other advertisers competing for the same keywords. An "average" rating means you are performing at the median. "Above average" means you are outperforming most competitors on that dimension.

The most impactful component to improve depends on where you are weakest. A keyword with above-average ad relevance and landing page experience but below-average expected CTR has a specific, actionable problem: the ad copy is not compelling enough. A keyword with strong CTR but poor landing page experience needs a landing page redesign, not ad copy changes.

Google also uses a real-time auction quality score that may differ from the reported quality score. The reported score is a historical aggregate; the auction score incorporates real-time signals like device, location, time of day, and query context. This means the reported quality score is a useful directional indicator, but the actual cost and position in any given auction may vary.

Quality score influences ad rank, which in turn determines impression share and cost per click. In a metric tree, it connects to both the volume and efficiency of paid search.

The tree reveals quality score's dual impact. First, it reduces cost per click because higher quality scores require lower bids to achieve the same ad rank. Second, it increases impression share because higher ad rank wins more auctions, capturing more of the available search volume.

This creates a compounding effect that makes quality score one of the highest-leverage metrics in paid search. Improving quality score simultaneously reduces the cost of each click and increases the number of clicks you receive. No other single metric delivers this dual benefit.

1. 1

   Structure ad groups around tight keyword themes

   The foundation of quality score is relevance. Group closely related keywords into small, focused ad groups so you can write ad copy that directly addresses the intent behind each keyword cluster. An ad group with 5 to 10 tightly themed keywords will always outperform one with 50 loosely related terms.

2. 2

   Write ad copy that mirrors keyword intent

   Include the primary keyword or a close variant in the headline. Address the specific need the searcher has. If the keyword is "project management software for remote teams," the ad should address remote team project management specifically, not generic software benefits.

3. 3

   Build dedicated landing pages per ad group

   Landing page experience improves when the page content matches the ad promise. A searcher who clicks an ad about "remote team project management" should land on a page about that topic, not a generic homepage. Create landing page variants for your highest-spend ad groups.

4. 4

   Improve landing page speed and usability

   Page load speed, mobile responsiveness, clear navigation, and above-the-fold relevance all contribute to landing page experience. Run PageSpeed Insights on your top landing pages and address the recommendations.

5. 5

   Test ad variations to improve expected CTR

   Run responsive search ads with multiple headline and description options. Google will optimise toward the combinations that generate the highest CTR, which directly improves expected CTR and therefore quality score.