CTA (Call to action)
A CTA is the line or button on an ad that tells people what to do next, such as Shop now or Book a demo. CTA stands for call to action. The words set the expectation for what happens after the click. A good CTA matches the page or form that follows.
Theodor Lindfors, Founding Marketer ·
What a CTA is
The call to action (CTA) is the sentence that turns interest into a step. Everything before it earns attention. The call to action (CTA) spends that attention. An ad with a great opening and no clear ask leaves the viewer to guess, and most of them will not.
Let's take a plumbing company as an example. They buy Google ads to get homeowners who need a plumber this week. The product is a booked visit, not something you add to a cart. The call to action (CTA) has to name a conversation or a quote, not a checkout.
Where the CTA lives in an ad
There are usually three calls to action (CTAs) in one ad, and they should agree. The platform button, the copy, and the creative itself. If the button says Shop now while the video says download the guide, you have split your own ask.
In video, the on-screen ask belongs where people are still watching, not only in the final frame. In lead form ads (ads that open a form inside the app instead of sending people to your site), the call to action (CTA) also sets expectations for the form. Get a quote implies a price is coming. Book a demo implies a calendar.
How to write a CTA that matches the offer
Name the action and the friction. Start free trial, no card is a call to action (CTA). Learn more is a shrug. The more specific the ask, the more the click means, even if raw CTR (click-through rate: clicks divided by impressions) drops.
Let's take a plumbing company as an example. The plumbing company spent $3,000 on Google Search ads. Version A used Learn more: 800 clicks, and 40 of those people requested a quote (5% conversion), so each quote cost $75. Version B used Get a quote: 500 clicks, and 60 people requested a quote (12% conversion), so each quote cost $50. Fewer clicks, more of the right next step. The plumbing company kept version B.
- Match the call to action (CTA) to intent: people who just met you and people who already visited pricing should not be asked for the same step.
- Test one call to action (CTA) change at a time, not a new call to action (CTA) inside a new creative.
- Judge it on conversion rate after the click, not on clicks alone.
Common CTA mistakes
The usual failure is optimizing the button for clicks, then blaming the page. Let's take a plumbing company as an example. The plumbing company's Learn more ads looked healthy in the ads manager. The office said the calendar was empty of serious jobs. The call to action (CTA) had invited browsers.
- Chasing clicks with a soft ask, then blaming the landing page.
- Stacking three asks in one ad so none of them lands.
- Leaving the platform button on its default while the copy asks for something else.
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