Google Ads Extensions Guide

Ad extensions (now called assets) expand your Google Ads with extra information and links — phone numbers, site links, callouts, prices and more — making your ads bigger, more useful, and more clickable, often at no extra cost. They're one of the easiest ways to improve ad performance, yet many advertisers underuse them. Here's a guide to Google Ads extensions: what they do, the main types, and why you should always use them.

What extensions do and why they matter

The value extensions provide: they add extra information and links to your ads, making them larger, more informative, and more clickable — extending the basic ad with sitelinks, callouts, phone numbers, prices, and more. The benefits are compelling: more prominent ads (extensions make your ad physically bigger and more prominent on the results page, standing out from competitors); higher click-through rate (more information and more links give searchers more reasons and ways to click, typically lifting CTR); better Ad Rank (extensions factor into Ad Rank, so using them can improve your position — Google rewards the richer, more useful ads extensions create); more useful ads (they let you provide genuinely helpful information — locations, prices, specific pages, phone numbers — serving the searcher better); and generally no extra cost (you're not charged more for extensions showing — you pay per click as normal — so they add value essentially for free). This combination — bigger, more clickable, better-ranked ads at no extra cost — makes extensions one of the highest-ROI, lowest-effort improvements in PPC, which is why underusing them is such a common missed opportunity. The rule is simple: use all relevant extensions, always.

The main extension types

The key extension/asset types and their uses: sitelinks (additional links to specific pages — letting searchers jump to relevant sections like specific products, pricing, or contact — adding useful navigation and real estate); callouts (short highlights of features or benefits — "free shipping," "24/7 support," "no contract" — reinforcing your value); structured snippets (listing specifics like product categories, services, or types — giving searchers concrete details); call extensions (your phone number, enabling calls directly — valuable for businesses wanting calls, especially on mobile); location extensions (your business location — essential for local businesses driving foot traffic, tied to location targeting); price extensions (showing prices for products/services — useful for setting expectations and attracting qualified clicks); promotion extensions (highlighting offers and deals); image extensions (adding visuals to search ads); and lead form and app extensions (for specific goals). Each adds information, links, or prominence — so the approach is to use every extension relevant to your business, giving searchers more useful information and more reasons to click while making your ads bigger and better-ranked.

Why you should always use extensions

The case for using them comprehensively: they're essentially free upside (more prominent, clickable, better-ranked ads at no extra cost — there's rarely a reason not to use relevant extensions, making them a default best practice); they improve the whole ad's performance (higher CTR, better Ad Rank, and more useful ads all flow from good extension use — compounding your other optimisation); they serve searchers better (relevant extensions give people the information and options they want — phone, location, specific pages, prices — improving the experience); they're a competitive edge when others neglect them (since many advertisers underuse extensions, comprehensive use makes your ads stand out); the practices (use all relevant extension types, keep them accurate and useful, provide plenty of sitelinks and callouts, ensure they're relevant to the ad and landing page, and maintain them over time — per the audit discipline); and pair with strong ads (extensions amplify good responsive search ads, so use them together). The bottom line: extensions are a low-effort, high-return, essentially-free way to make every ad bigger, more clickable, and better-ranked — so always use every relevant one, turning ad spend into more results alongside the authority you build (our half).

Frequently asked questions

What are Google Ads extensions?

Extensions (now called assets) add extra information and links to your ads — sitelinks, callouts, phone numbers, prices, locations, and more — making your ads bigger, more informative, and more clickable, generally at no extra cost. They improve click-through rate (more reasons and ways to click), factor into Ad Rank (improving your position), and serve searchers better with useful information. This combination of bigger, more clickable, better-ranked ads at no extra cost makes them one of the highest-ROI, lowest-effort improvements in PPC.

Which Google Ads extensions should I use?

Use every extension relevant to your business — sitelinks (links to specific pages), callouts (feature/benefit highlights), structured snippets (specifics), call extensions (your phone number, valuable on mobile), location extensions (essential for local businesses), price and promotion extensions (products, offers), and image extensions. Each adds information, links, or prominence. Since they're essentially free upside and improve performance, the rule is simple: use all relevant extensions, keep them accurate and useful, and maintain them over time.

Do ad extensions cost extra?

Generally no — you're not charged more for extensions showing; you pay per click as normal, so extensions add value essentially for free (bigger, more clickable, better-ranked ads at no extra cost). This is exactly why underusing them is such a common missed opportunity — they're low-effort, high-return upside with rarely a reason not to use them. Use every relevant extension as a default best practice, pairing them with strong responsive search ads to maximise every ad's performance alongside the authority you build (our lane).