What Is Quality Score?
Quality Score is Google's internal rating of the relevance and quality of your ads, keywords, and landing pages. It's scored on a scale of 1 to 10 (10 being best) and is assigned at the keyword level. While Google has noted that Quality Score is a diagnostic tool rather than a direct input into ad auctions, the underlying components that drive it have a direct impact on your Ad Rank — and therefore your cost-per-click and ad position.
In plain terms: a higher Quality Score means you can pay less per click and still outrank competitors with lower scores.
The Three Components of Quality Score
Google breaks Quality Score into three sub-metrics, each rated as Below Average, Average, or Above Average:
| Component | What It Measures | Approximate Weight |
|---|---|---|
| Expected Click-Through Rate (CTR) | How likely users are to click your ad for this keyword | ~50% |
| Ad Relevance | How closely your ad copy matches the intent of the keyword | ~25% |
| Landing Page Experience | How relevant and useful your landing page is after the click | ~25% |
Why Expected CTR Carries the Most Weight
Expected CTR isn't just your historical click-through rate — it's Google's prediction of how often your ad will be clicked relative to its impression count for a given keyword. Google normalizes this across ad position, so a low position doesn't automatically penalize you. What matters is whether users find your ad compelling when they see it.
A low expected CTR is often a signal that your ad copy isn't resonating with the keyword's intent — or that the keyword itself is too broad.
How to Improve Each Component
Boosting Expected CTR
- Write headlines that directly mirror the user's search query.
- Use ad extensions (sitelinks, callouts, structured snippets) to increase ad real estate and relevance.
- A/B test multiple responsive search ad headlines to identify which combinations get clicked more.
- Pause keywords with chronically low CTR and test narrower match types.
Improving Ad Relevance
- Group keywords tightly by theme — avoid lumping 30 different keywords into one ad group.
- Use Single Keyword Ad Groups (SKAGs) or tightly themed ad groups for your highest-volume keywords.
- Include the primary keyword naturally in at least one headline and the display URL path.
Enhancing Landing Page Experience
- Ensure the landing page content directly addresses the search intent behind the keyword.
- Remove friction: fast load times, mobile responsiveness, and a clear CTA are non-negotiable.
- Avoid redirecting ad traffic to generic homepages — build or designate specific landing pages per campaign theme.
- Match the messaging in your ad copy to the headline and body content on the landing page (message match).
What Quality Score Won't Fix
Quality Score is a useful signal but not a silver bullet. A Quality Score of 10 on a keyword with no conversion intent won't make your campaign profitable. Always pair Quality Score improvements with a clear understanding of your target audience, bid strategy, and conversion funnel.
Focus on Quality Score as part of a broader account health review — not as a vanity metric to chase in isolation.
Key Takeaway
Improving Quality Score is fundamentally about alignment: your keywords, ad copy, and landing pages should tell a consistent, relevant story from search query to conversion. When those three elements are tightly connected, both Google and your prospective customers reward you for it.