Google Ads

How Ad Copy Affects Your Google Ads Quality Score

Quality Score is Google's 1–10 rating of your keyword, ad, and landing page combination. A higher QS lowers your CPC and improves your ad position. Your ad copy is a significant component. Here's how it works.

What Quality Score Measures

Quality Score is built from three components:

Component	Weight	What It Measures
Expected CTR	High	How likely users are to click your ad
Ad relevance	Medium	How closely your ad matches the search query
Landing page experience	High	How useful and relevant your landing page is

How Your Copy Affects Expected CTR

Expected CTR is based on historical click-through rates for your ad in similar auctions. Better copy that earns more clicks improves this score over time. The fastest way to improve expected CTR is to write headlines that directly match what users are searching for — which is why Dynamic Keyword Insertion (DKI) often improves QS mechanically.

Ad Relevance: Matching Intent in 30 Characters

Ad relevance measures how closely your ad text aligns with the keywords it targets. An ad showing for "emergency plumber london" that doesn't contain the word "plumber" or "emergency" in any headline will score poorly for ad relevance. Include your target keyword in at least one headline — without sacrificing readability.

The Copy-to-Landing-Page Thread

Landing page experience depends on whether the page delivers on what the ad promises. If your headline says "Free Quote in 60 Seconds" but the landing page has no quote form, Google's crawler (and your bounce rate) will penalise you. Match the specific offer, tone, and keyword from your ad to your landing page headline.

Practical QS Improvement Checklist

• Include target keyword in at least one RSA headline
• Write 10+ distinct headlines to give Google more combinations to test
• Ensure landing page H1 mirrors or expands on ad headline
• Pause low-CTR keywords dragging down account-level QS
• Review Search Terms report and add negatives to improve relevance