This guide breaks down what assets are, why they matter, every type worth using, and how to match them to your goals. If you are still deciding whether paid search is the right channel at all, our guide to how Google Ads work in South Africa covers the fundamentals first.

What are Google Ads extensions (ad assets)?

Google Ads extensions, now called assets, are extra pieces of information that expand your text ad with links, phone numbers, prices, images or promotions. They give people more reasons to click without you paying anything extra per impression. Google shows assets when it predicts they will improve performance and when your Ad Rank is high enough.

Think of a standard search ad as the headline and description. Assets are everything that can appear around it: sitelinks below the ad, a clickable phone number, a row of images, a promotional badge, a star rating. A plumber in Durban running a bare-bones ad is competing with one hand tied behind their back against a competitor whose ad shows call buttons, suburb locations and a “24/7 callout” promotion. Same budget, very different presence on the page.

Why ad extensions matter for South African advertisers

Ad extensions matter because they lift click-through rate, occupy more space on the results page, improve Ad Rank, and resist ad blockers, all at no extra cost per impression. Google Ads guidance notes that adding a new, relevant asset can improve CTR by several percentage points. In a market where every click costs Rand, that efficiency directly lowers your cost per lead.

Five concrete benefits:

• Higher CTR. More links and details mean more entry points for a searcher. Google has cited CTR uplifts in the region of 10-15% when relevant assets are added.
• More ad real estate. Assets physically push competitors down the page. A four-line ad with sitelinks, callouts and images can dominate the top of the screen on a mobile device.
• Better Ad Rank. Expected impact of assets is a factor in the Ad Rank formula. Strong assets can win you a higher position or a lower CPC at the same position.
• No extra cost per impression. You only pay when someone clicks, same as a normal ad. Assets do not carry their own impression fee.
• They resist ad blockers and clutter. Because assets are native ad components rendered by Google, they display reliably where third-party widgets might be stripped.

Google Ads assets (formerly extensions) are extra ad components such as sitelinks, callouts, structured snippets, calls, prices, images and promotions that expand a text ad at no extra cost per impression. They improve click-through rate, occupy more of the results page and feed into Ad Rank, so the more relevant assets you supply, the stronger the ad Google can assemble in each auction. Source: Google Ads Help and Juicy Designs campaign management, South Africa, 2026.

What are the main types of Google Ads assets?

The main asset types are sitelink, callout, structured snippet, call, lead form, location, affiliate location, price, app, promotion, image and seller ratings. Each surfaces a different kind of information, and you can run many at once. Google chooses which combination to show per auction, so the more relevant assets you supply, the more it has to work with.

How do I match an asset type to my campaign goal?

Match the asset to the action you want: use call assets for phone leads, location assets for foot traffic, and price assets for ecommerce browsing. Start from the conversion that matters, then add the assets that move someone toward it. Layering complementary assets, rather than picking one, gives Google the flexibility to assemble the strongest ad per auction.

A quick mapping:

• Goal: phone leads (plumbers, attorneys, medical practices) → Call assets plus a “Call Now” callout. South African service buyers still phone; make it one tap.
• Goal: foot traffic (restaurants, showrooms, retail) → Location assets tied to your Google Business Profile, plus affiliate location assets if you sell through retailers.
• Goal: ecommerce sales → Price assets in Rand, promotion assets for active specials, and image assets showing the product.
• Goal: lead capture at scale → Lead form assets and sitelinks to your best landing pages, with POPIA-compliant consent wording. A focused conversion rate optimisation pass on those pages compounds the gain.
• Goal: brand trust → Seller ratings, callouts naming credentials, and structured snippets listing your service range.

What are the best practices for Google Ads assets?

The two golden rules are: add as many relevant assets as possible, and keep them updated. Google recommends supplying at least four sitelinks, four callouts and one structured snippet per campaign, plus images and any goal-specific assets. Stale assets, an expired promotion or a discontinued price, waste impressions and erode trust.

Practical guidance:

• Provide depth at every level. Add assets at account, campaign and ad-group level so Google can serve the most specific relevant option.
• Write callouts that differ from your headlines. Repetition wastes space; complement your message rather than echo it.
• Use real Rand figures in price and promotion assets. Vague pricing underperforms specific pricing.
• Refresh seasonally. Update promotion assets for Black Friday, festive season and back-to-school, and remove them when they lapse.
• Audit monthly. Check for disapproved assets, broken sitelink URLs and outdated prices. The same discipline that lifts your Quality Score keeps assets serving.
• Mind POPIA on lead forms. Disclose what you collect and why, and only use the data for the stated purpose.

“Assets are the closest thing to a free lunch in Google Ads. We routinely take over South African accounts where the previous setup had two sitelinks and no callouts, and simply filling out the asset library lifts click-through rate before we touch a single bid. It costs nothing per impression, so leaving assets empty is leaving performance on the table.”

Wynand van der Westhuizen, Creative Director & Co-founder, Juicy Designs, reviewed and verified April 2026

Once your asset library is full and refreshed, the next lever is how you spend. Our guide to setting a Google Ads budget in South Africa shows how to allocate spend so those richer ads run on the searches that convert.

Frequently asked questions