What Is Click-Through Rate And How To Optimize It?

Nas Mouti, PhD
By Nas Mouti, PhD
LAST UPDATED 4 years, 9 months ago

Intro

The worlds of tech and marketing are chock-full of buzzwords and acronyms, some important to remember, some less so. Among them, the Click-Through Rate is definitely something to remember for its foundational role in any digital marketing strategy.
Digital marketing dashboard featuring the click-through rate as a key performance metric
Digital marketing dashboard featuring the click-through rate as a key performance metric

What it is

The Click-Through Rate (CTR) is a measure of how likely someone will click on your ad or link, or open your email for example. It is a key measure of the performance of your marketing campaign.

How it is calculated

The CTR is simply the number of clicks a link or ads has received, divided by the number of times it was displayed to members of your audience. In other words: CTR = (number of clicks)/(number of impressions)

Importance of CTR

Optimizing the CTR is of paramount importance for any business, as it measures how much their marketing efforts resonate with their target audience. To understand the importance of CTR, we must first distinguish between two major types of ads: The benefit of CTR is pretty obvious in Pay-Per-Impression campaigns: if you increase your CTR, you increase your ad engagement while spending the same amount. It’s a no-brainer. However, you might think that the CTR is irrelevant to PPC ads. After all, you only pay for the number of clicks, so you shouldn’t care how many impressions it took to generate one click, right? Wrong. The problem of this reasoning is that it only looks at half of the equation. The other half is Google. Think about it, do you think it is in the interest of Google (or Bing, or Yahoo etc…) to just keep displaying your ad to thousands of people without ever generating revenue? Does that seem like a good business practice? Of course not! This is why Google – and other ad providers – attribute to each advertiser a Quality Score between 1 and 10. The higher the Quality Score, the more likely your ad will be shown to a higher number of users. Even better, with a high Quality Score, your ad will show higher and you’ll pay less per click. Here’s the kicker: CTR is one of the main factors influencing your Quality Score. It is Google’s way of ensuring that they will prioritize ads that generate clicks, and therefore revenue to Google. However, you should be cautious not to overdo it. A high CTR could also mean casting too wide a net and reaching the wrong audience, or that your audience gets the wrong idea from your ad. That’s why CTR has to be interpreted in conjunction with the bounce rate and the Conversion Rate to describe your ad’s success and your return on investment (ROI).

Three steps to increase your CTR