What Is Quality Score?
Quality Score is Google's rating of the overall quality and relevance of your keywords, ads, and landing pages. It's measured on a scale of 1 to 10 for each keyword in your account, with 10 being the best.
Think of it as Google's way of ensuring that the ads people see are actually useful. If your ad and landing page genuinely help the person searching, Google rewards you with lower costs and better positions. If they don't, you'll pay more for worse placements.
Why Quality Score Matters for Your Budget
Quality Score isn't just a vanity metric. It directly affects two things that matter to every advertiser:
- Your cost per click (CPC): Higher Quality Scores mean lower CPCs. A keyword with a Quality Score of 8 can cost significantly less per click than the same keyword with a score of 4.
- Your ad position: Google uses Quality Score alongside your bid to determine Ad Rank. A high Quality Score can help you appear above competitors who are bidding more than you.
The Real-World Impact
Here's a simplified example of how Quality Score affects what you actually pay:
| Advertiser | Max Bid | Quality Score | Ad Rank | Position | Actual CPC |
|---|---|---|---|---|---|
| Business A | £3.00 | 8 | 24 | 1st | £2.01 |
| Business B | £4.00 | 5 | 20 | 2nd | £3.51 |
| Business C | £5.00 | 3 | 15 | 3rd | £5.00 |
Business A pays the least per click and gets the top position — purely because of their higher Quality Score. Business C bids the most but ends up in third place and pays the full amount.
The Three Components of Quality Score
Google calculates Quality Score from three distinct factors. Each one is rated as "Below Average," "Average," or "Above Average."
1. Expected Click-Through Rate (CTR)
This measures how likely Google thinks people are to click your ad when it shows for a given keyword. It's based on your historical CTR, adjusted for ad position and other factors.
What affects it:
- How relevant your ad copy is to the keyword
- Whether your headlines address the searcher's intent
- Your historical performance for similar keywords
How to improve it:
- Write compelling ad copy that directly addresses the search query
- Use the keyword in at least one headline
- Test multiple headline and description variations
- Remove underperforming ads that drag down your average CTR
2. Ad Relevance
This measures how closely your ad matches the intent behind the keyword. If someone searches "emergency plumber Leeds" and your ad talks about general home maintenance, your ad relevance will be low.
What affects it:
- How well your ad copy relates to the keyword
- Whether the keyword's intent is matched by the ad's message
- The structure of your ad groups (too many unrelated keywords in one group hurts this)
How to improve it:
- Organise keywords into tightly themed ad groups (no more than 15-20 related keywords per group)
- Write ad copy that speaks directly to the keywords in each ad group
- Don't try to make one ad cover too many different topics
- Use the keyword naturally in your headlines and descriptions
3. Landing Page Experience
This measures how useful and relevant your landing page is to someone who clicks your ad. Google considers the content, load speed, mobile-friendliness, and how easy the page is to navigate.
What affects it:
- Whether the landing page content matches the ad's promise
- Page load speed (especially on mobile)
- Mobile responsiveness
- Clear navigation and easy-to-find information
- Trust signals like reviews, accreditations, and contact details
How to improve it:
- Send each ad group to a dedicated, relevant landing page rather than your homepage
- Ensure your page loads in under 3 seconds
- Make your page fully responsive on mobile devices
- Include the information the searcher is looking for above the fold
- Add trust signals: testimonials, accreditation badges, phone numbers
How to Check Your Quality Score
You can view Quality Score in your Google Ads account by following these steps:
- Go to Keywords in your campaign
- Click the Columns icon
- Under Quality Score, add the columns for Quality Score, Expected CTR, Ad Relevance, and Landing Page Experience
- Apply and review
What the Ratings Mean
| Rating | What It Means | Action Needed |
|---|---|---|
| Above Average | You're outperforming most advertisers | Maintain what you're doing |
| Average | You're in line with competitors | Look for improvement opportunities |
| Below Average | There's a clear problem | Prioritise fixing this component |
Focus your efforts on any component rated "Below Average" — that's where the biggest gains are.
Common Quality Score Mistakes
Sending All Traffic to Your Homepage
Your homepage tries to serve everyone. A landing page tailored to the specific keyword and ad group will always perform better for Quality Score.
Stuffing Keywords Into Ad Copy
Including relevant keywords is good. Unnaturally cramming them in makes your ads read poorly and can actually hurt CTR, which damages Quality Score.
Ignoring Mobile Experience
Over 60% of Google searches in the UK happen on mobile devices. If your landing page is slow or difficult to use on a phone, your landing page experience rating will suffer.
Too Many Keywords Per Ad Group
If you have 50 keywords in a single ad group, your ad copy can't possibly be relevant to all of them. Break them into smaller, tightly themed groups of 10-20 keywords.
Not Testing Ad Variations
Running a single ad per ad group means Google has nothing to optimise. Provide at least 3-4 headline variations and 2 description variations so the system can find winning combinations.
A Step-by-Step Plan to Improve Quality Score
If your Quality Scores are sitting at 4, 5, or 6, here's a practical plan to improve them:
Week 1: Audit and restructure
- Review your ad group structure — split any groups with too many unrelated keywords
- Identify keywords with "Below Average" ratings in any component
- Map each ad group to a specific, relevant landing page
Week 2: Rewrite ad copy
- Write new headlines that directly address each ad group's keywords
- Include clear CTAs and your strongest USPs
- Ensure each ad group has at least 8-10 headlines and 3-4 descriptions
Week 3: Fix landing pages
- Test page speed using Google's PageSpeed Insights tool
- Ensure above-the-fold content matches the ad's promise
- Add or update trust signals (reviews, badges, guarantees)
- Check mobile responsiveness
Week 4: Monitor and refine
- Check Quality Score changes (they update regularly but not instantly)
- Pause or rework any ads with consistently low CTR
- Continue testing new ad copy variations
The Bigger Picture
Quality Score is one of the most important levers in your Google Ads account. Improving it doesn't just save you money — it makes your entire account more competitive, and it is one of the key factors in reducing wasted ad spend. A well-structured account with strong Quality Scores can outperform competitors with bigger budgets.
But it requires ongoing attention. Keywords, ads, and landing pages all need to work together, and they need regular review to stay sharp.
Want to Know Your Quality Scores?
If you're not sure where your account stands, request a free SwiftLead audit. We'll review your Quality Scores across every keyword, identify the weakest components, and give you a clear action plan to improve them — with no obligation whatsoever.
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