About Quality Score
So, having a high Quality Score means that our systems think your ad and landing page are relevant and useful to someone looking at your ad.
This article explains how Quality Score works.
Quality Score is based on past performance data
Quality Score is an aggregated estimate of how well a keyword has performed overall in past ad auctions. Based on this data, each of your keywords gets a Quality Score on a scale from 1 to 10, where 1 is the lowest score and 10 is the highest.
Null Quality Scores, designated by "—" in the table, appear when there aren’t enough impressions or clicks to accurately determine a keyword’s Quality Score.
How it differs from auction-time ad quality
Important: Your Quality Score is not used at auction time to determine Ad Rank.
Ad Rank is calculated in the instant someone does a search that triggers your ad to compete in an auction. For Ad Rank, we take into account real-time signals such as the query and user context (e.g. type of device, language preference, location, time of day) to calculate more precise measurements of expected CTR, ad relevance, and landing page experience. Quality Score, on the other hand, is a more general estimate based on your average past performance. It also differs from Ad Rank in that it’s keyword-based.
Quality Score and new keywords
Quality Score comes from past performance data. So what happens with new keywords that don’t have that past performance data?
New keywords automatically get a Quality Score of "—". As your ads run, your keywords accumulate performance data and your Quality Score may change. You may see changes in your Quality Score after a day or two.
A high-quality ad in action
Here’s an example of a good user experience based on an ad that is high quality and relevant. Let's say that you own a website that specializes in socks, and Sam, a customer, is looking for striped socks. Here’s how your ad (and high Quality Score keywords) connects Sam with what he wants.
- When Sam searches Google for “men’s striped socks,” he sees your ad. (Your ad has “[striped socks]” as a keyword.)
- Sam clicks the ad and lands right on your website’s “striped men’s socks” page. The page loads quickly and is easy for Sam to use.
- Sam buys several pairs of striped socks.
That's what we consider a great user experience. Beyond a potentially higher Quality Score in most cases, relevant ads tend to earn more clicks, appear in a higher position, and bring you the most success.