What Is a Callout Extension?
A callout extension is a Google Ads asset that allows advertisers to add up to four short phrases below the main body of a search ad. Unlike sitelink extensions, callouts do not link anywhere. Their sole purpose is to communicate extra selling points to users who are scanning the results page. Each callout can be up to 25 characters and Google selects which callouts to display and how many based on the available space and the search context.
The most effective callouts communicate concrete, verifiable benefits rather than vague claims. Phrases like "Google Certified Partner", "Nationwide Delivery", "Same-Day Response", or "Money-Back Guarantee" carry weight because they address objections a potential customer might have before clicking. Generic phrases like "Best Quality" or "Great Service" add no real value because they cannot be verified and do not differentiate the ad from competitors.
Callouts work in combination with other ad assets. A well-structured ad might use a sitelink extension to direct users to specific pages, a callout extension to reinforce trust signals, and a structured snippet extension to list product categories or service types. Google assembles these assets dynamically based on what it predicts will generate the highest engagement for a given query, which means the more quality assets you provide, the better the system can optimise.
From an ad relevance perspective, callouts that align with the searcher's intent signal to Google that your ad is well-matched to the query. If a user searches for "same-day plumber Durban" and your ad includes a "Same-Day Service" callout, the combination reinforces relevance and improves both Quality Score and the likelihood of winning the auction at a lower effective cost.
Callout Extension In Practice
A Pretoria-based short-term insurer running Google Ads for "car insurance Pretoria" might use callouts such as "No Call Centre Delays", "Instant Online Quotes", "Claims Paid in 48 Hours", and "Rated 4.9 Stars". Each callout addresses a specific frustration South African consumers commonly associate with insurance companies. The ad does not need extra body copy to convey trustworthiness because the callouts do that work efficiently in a few words.
For e-commerce businesses selling across South Africa, callouts like "Free Delivery Over R500", "Easy Returns", "Secure Checkout", and "SA-Based Support" reduce the perceived risk of buying online. These are particularly effective when combined with a strong landing page experience that reinforces the same promises. Consistency between the ad assets and the landing page builds user confidence and reduces bounce rates, which in turn signals positive quality signals back to Google's ad ranking system.
How callout extensions work
Callout extensions (now often called callout assets) are short, non-clickable snippets of text added to Google search ads that highlight specific features, benefits or selling points, such as "Free delivery", "24/7 support", "No long-term contracts" or "Founded 2015". Unlike sitelinks, which are clickable links to specific pages, callouts are not links; they are additional descriptive phrases that appear with the ad to reinforce its appeal and convey extra selling points. You provide a set of callouts, and Google shows a selection with the ad when it judges they will help and the format allows, adding them to the ad's text to make it more informative and persuasive. Callouts let an ad communicate more of what makes an offer attractive, features, guarantees, differentiators, without taking a click or extra space beyond the text, which is why they are a standard, recommended addition to search ads: they strengthen the ad's message and appeal at no direct extra cost.
Using callout extensions effectively
Effective callout extensions highlight genuine, specific and compelling selling points that give searchers reasons to choose you, rather than vague or generic phrases. Good callouts convey concrete benefits and differentiators, free delivery, a guarantee, a distinctive feature, credentials, that reinforce why the offer is worth acting on, and they work best when they add information the ad's main text does not already carry, so the ad communicates more overall. Because Google shows a selection, providing several strong, distinct callouts gives it options to display the most fitting ones, and keeping them concise, within the character limit, ensures they display well. Callouts complement other assets: sitelinks add clickable destinations, callouts add persuasive descriptive points, and together they make an ad richer and more compelling. The practical approach is to list your genuine key selling points and add them as callouts, so every ad carries the strongest reasons to choose you. Because they enhance an ad's message and appeal at no direct extra cost, callout extensions, like sitelinks, are treated as a basic best practice for search campaigns.
FAQ
What is the character limit for a callout extension?
Each callout extension has a maximum of 25 characters. Google recommends keeping them shorter where possible, as concise phrases like "Free Delivery" or "No Contracts" scan more quickly than longer sentences. You should add at least four callouts per campaign so Google can test which combinations perform best.
What is the difference between a callout extension and a sitelink extension?
A sitelink extension is a clickable link that takes users to a specific page on your website. A callout extension is non-clickable text that highlights a feature or benefit. Sitelinks help users navigate; callouts build trust by communicating selling points without requiring an additional click destination.