Extensions expand your ads, take up more real estate on the search results page, and feed Google's Quality Score signals — all without paying more per click. Here is a complete breakdown of every extension type and exactly when to deploy each one.
Google Ads extensions (now officially called "Assets" in the Google Ads interface) are additional pieces of information that appear alongside your standard headline and description text. They can include links to specific pages on your site, your phone number, your business address, snippets about your services, pricing tables, images, and more. Critically, they are free to add — you do not pay any premium for the extra real estate they generate.
The business case for extensions is straightforward: more space in the search results means more attention, more clicks, and more information delivered to the prospect before they even visit your site. Studies consistently show that sitelink extensions alone can increase CTR by 10–20% compared to text-only ads. For a competitive keyword where a 1% CTR improvement translates to dozens of additional clicks per day, that is a significant and free performance gain.
Beyond CTR, extensions directly influence your Ad Rank — the score Google uses to determine where your ad appears in the auction. Ad Rank is calculated from your bid, your Quality Score, and the expected impact of your extensions. An advertiser with well-configured extensions can beat a higher-bidding competitor in the auction, paying less per click while occupying a better position. Ignoring extensions is effectively leaving Ad Rank on the table for free.
Google automatically selects which extensions to show on any given search query based on predicted performance, screen space, and relevance. This is why adding more extensions — even if they are not shown every time — improves your campaign's overall performance. You are giving Google's algorithm more material to work with, and it will surface the combination it predicts will produce the best outcome for your specific query context.
Sitelink extensions are additional links that appear below your main ad, each with its own headline and description text, pointing to specific pages on your website. When your ad wins a top position on a branded or high-relevance query, Google can show up to four sitelinks on desktop — which means your ad can occupy a significant portion of the visible search results area before the user even sees an organic result.
Configuration best practices: Add a minimum of six sitelinks per campaign. Each sitelink headline supports up to 25 characters, and each optional description line supports up to 35 characters. Write sitelink text that is distinct from your main headline — you want each link to serve a different intent. For a home services company, a well-structured sitelink set might include: "Get a Free Estimate," "See Our Service Area," "Read Customer Reviews," "Meet Our Team," "View Pricing," and "Emergency Service Available."
Sitelinks can be set at the account level, campaign level, or ad group level, with more specific levels overriding broader ones. Use account-level sitelinks for universal links that apply across your entire campaign portfolio (about us, contact, reviews). Use campaign-level sitelinks for service-specific or location-specific destinations that are only relevant to that campaign's intent. Ad-group-level sitelinks are useful when different keyword themes warrant entirely different destination options.
One advanced tactic often overlooked: use sitelinks for objection handling. If your data shows that prospects frequently search for your brand name + "pricing" or your brand name + "reviews," create sitelinks that directly address those concerns. You are answering their secondary questions before they have to search for them separately — and that reduces friction in the buying process significantly.
Callout extensions are short, non-clickable text phrases that appear in your ad to highlight specific features, benefits, or differentiators. Each callout supports up to 25 characters, and Google typically shows two to six callouts at a time. The optimal strategy is to add eight to ten callouts so the algorithm has enough options to test combinations.
Strong callout text is punchy and specific: "No Contracts Required," "Same-Day Service Available," "Licensed and Insured," "Free Estimates," "10-Year Workmanship Warranty." Avoid generic filler like "Great Service" or "High Quality" — these phrases add visual noise without communicating any real competitive differentiation. Every callout should be something your prospect cannot assume is true of every competitor in the category.
Structured snippets let you list items under a predefined header category. Google offers headers like "Services," "Types," "Brands," "Destinations," "Models," "Neighborhoods," and several others. Under "Services," for example, a roofing company might list: Roof Replacement, Roof Repair, Storm Damage Repair, New Construction, Gutter Installation. Each value supports up to 25 characters, and you need at least three values per header.
Structured snippets are particularly useful for businesses with multiple distinct service lines or product categories because they give prospects a quick visual inventory of your capabilities before they click. This pre-qualification effect can actually improve conversion rates because users who click already know your service applies to their situation.
Call extensions display your phone number alongside your ad, with a click-to-call button on mobile that makes calling as easy as one tap. For any business where phone calls are a meaningful conversion action — home services, legal, medical, financial services, automotive — call extensions are non-negotiable. Always configure them. On mobile, calls from search ads convert at higher rates than website visits for local service categories because the prospect is in research mode and ready to talk.
Schedule your call extensions to only display during business hours. An extension that shows your number at 2am when nobody answers is worse than no extension — it creates a negative first impression if someone calls and gets voicemail immediately. Use Google Ads call reporting to track which campaigns generate the most call volume and attribute value accordingly.
Location extensions display your business address, a map pin, and distance from the searcher's location below your ad. They require your Google Ads account to be linked to your Google Business Profile. This linkage also unlocks Local campaigns and contributes to your visibility in Google Maps advertising. Location extensions dramatically improve performance for any brick-and-mortar business or service-area business — they signal geographic relevance, which boosts Quality Score for location-specific queries and visually reassures prospects that you serve their area.
Price extensions display a carousel of product or service cards with pricing information directly in the search result. Each card includes a header, description, price (or starting-from price), and a link. Price extensions are powerful for service businesses with clearly defined packages because they pre-qualify prospects on budget before the click — someone who clicks after seeing your pricing is already price-comfortable. This typically improves lead quality even if it slightly reduces raw click volume.
Image extensions allow you to add a visual asset to your search ads on eligible placements. A compelling image — a finished project, a product shot, your team, a before/after — can dramatically differentiate your listing in a page of text-only results. Image extensions require square images at minimum 300x300px (recommended 1200x1200px). Not all advertisers qualify; eligibility is based on account history and policy compliance. If you qualify, activate image extensions on every campaign — the visual differentiation at no extra cost is too valuable to ignore.
Lead form extensions allow prospects to submit a contact form directly within the search results without ever visiting your website. The form pre-populates with the user's Google account information, making submission frictionless. This is particularly effective for mobile users — the single biggest drop-off point in a mobile search-to-conversion flow is the landing page load time and form-fill friction. Eliminating that step can dramatically increase lead volume. The tradeoff is lead quality: in-SERP form submitters have done less research and may convert at a lower rate downstream. Test lead form extensions against landing-page conversions and evaluate both volume and downstream close rate before making a permanent allocation decision.
Promotion extensions display a special offer badge below your ad, highlighting a discount, sale, or limited-time deal. You can specify a monetary or percentage discount, set start and end dates, and restrict the promotion to a specific occasion (Black Friday, New Year, Back to School, etc.). When active, these extensions add a visual orange price tag icon that immediately signals a deal to the prospect — a strong click incentive for price-sensitive audiences. Schedule them precisely: a promotion extension that expired three days ago erodes trust rather than building it. Always set hard end dates and verify they are deactivating correctly.
App extensions add a link to download your mobile app directly from your search ad. They only appear on mobile devices and require your app to be listed in either the App Store or Google Play. For businesses whose app is a meaningful conversion vehicle — on-demand services, booking platforms, subscription products — app extensions let you convert high-intent search traffic directly into app installs. If your business is not app-dependent, skip these.
Message extensions add an SMS button to your mobile search ads, allowing prospects to initiate a text conversation directly from the search results page. They are useful for businesses with SMS-based customer service workflows or for categories where younger demographics strongly prefer texting to calling. The operational requirement is real: you need a monitored number and a response protocol. A message extension that generates inquiries nobody answers destroys the trust you were trying to build. Only activate message extensions if you have a dedicated response workflow in place.
Quality Score is Google's 1–10 rating of your ad's relevance and expected performance, calculated across three components: expected CTR, ad relevance, and landing page experience. Extensions influence Quality Score primarily through expected CTR — ads with rich extension configurations are predicted to earn higher click rates, which raises the expected CTR component of your Quality Score. A higher Quality Score lowers your cost per click and improves your Ad Rank, meaning extensions create a compounding efficiency advantage over time as your account history builds.
The extension approval process mirrors the ad approval process. Google reviews each extension against its advertising policies before showing it. Most extensions are approved within 24 hours for accounts in good standing. Common disapproval reasons include: using superlative language without substantiation ("the best," "#1 rated" without a third-party source), embedding phone numbers in sitelink text or callouts (use call extensions for this), trademark violations, destination URL mismatch (the extension landing page must be relevant to the extension text), and policy-restricted content in any field.
When an extension is disapproved, Google will show a status of "Disapproved" or "Limited" in your asset library with a policy reason. Review the reason, correct the specific issue, and resubmit. Do not simply delete and recreate the extension with identical content — the review will produce the same outcome. If you believe a disapproval is in error, use the Google Ads policy appeal process, which typically resolves within three business days.
Maintain your extension library like you maintain your ad copy — quarterly audits to remove underperforming assets, refresh seasonal content on schedule, and ensure all landing pages referenced in extensions are live and loading correctly. A sitelink pointing to a 404 error will be disapproved and flagged during Google's automated crawl, creating unnecessary policy friction in your account.
When we audit a new client's Google Ads account, extensions are one of the first things we check because they represent one of the fastest, highest-leverage improvements available. It is common to find accounts running without sitelinks, without call extensions, and without callouts — meaning every ad in the account is smaller, less visible, and scoring lower on Ad Rank than it could be with zero additional ad spend.
Our extension audit covers five questions: Are all major extension types configured? Are they scheduled correctly? Do they link to live, relevant landing pages? Is the copy differentiated and specific rather than generic? And are there any disapproved assets creating policy risk in the account?
The full extension setup we install on a new account typically adds 10–15% CTR improvement within the first 30 days, before any bid or keyword optimization touches the account. It is the fastest single configuration win available in Google Ads.
Get a Free Extension AuditWe review every active and paused extension in the account, flag disapprovals, and identify configuration gaps against our full-coverage checklist.
We write sitelink headlines and descriptions, callout text, and structured snippet values specific to the client's offer and competitive differentiators.
Call extensions are scheduled to business hours. Promotion extensions are given precise end dates. All time-sensitive assets are set to auto-deactivate.
Every extension is reviewed against current Google Ads policies before submission, reducing disapproval rate and account-level policy risk.
Extension performance is segmented and reviewed monthly. Underperforming assets are replaced and new copy variations are tested on a rolling basis.
No. Extensions are free to add. You only pay when someone clicks your ad — and if they click a sitelink or call extension, that click is charged at the same CPC as the headline click. Adding extensions increases your ad size and visibility at no additional cost, making them one of the only free performance levers in paid search.
Add at least 6 sitelinks per campaign. Google typically shows 2–4 at a time on desktop and selects which to display based on relevance and performance. More sitelinks give the algorithm more options to optimize, and each additional sitelink improves the probability your ad occupies more screen real estate on high-value branded and non-branded queries.
Sitelink extensions consistently produce the largest CTR uplift — often 10–20% when displayed. Call extensions are the highest-impact for local service businesses where phone calls are the primary conversion action. Callout extensions and structured snippets provide supporting signals that collectively improve ad rank and the overall volume of extension-eligible impressions.
Yes. All major extension types support scheduling at the extension level. Call extensions are the most common use case — you can restrict their display to business hours so prospects who click to call always reach a live person. Promotion extensions are frequently scheduled around specific sale dates with automatic expiration to prevent stale offer messaging.
The most common disapproval reasons: using superlatives without substantiation (best, #1, cheapest), including phone numbers in sitelink text instead of using call extensions, duplicate content between extensions and your headline, policy violations in destination URLs, or landing page mismatch where the extension URL leads to a page unrelated to the extension text. Review the specific policy reason in your asset library and correct that exact issue before resubmitting.
Most accounts we audit are missing at least four extension types that could be improving CTR and Ad Rank today. Let us do a free audit and show you exactly what is being left on the table.