Google renamed ad extensions “assets” in 2022, but the underlying logic hasn’t changed: they add lines, links, and information to your ads without increasing your cost per click. Most accounts use two or three extensions badly. Used well, they can lift CTR by 10–15% and improve your ad rank without raising bids.
What Ad Extensions Actually Do
Extensions don’t just make your ad bigger — they increase ad rank. Google’s auction factors in expected impact of extensions when deciding which ads show and in what position. An account with well-configured extensions can outrank a competitor with a higher bid.
The other thing extensions do: they give users more reasons to click without more reasons to leave. A sitelink that answers a specific question pre-qualifies the click. A callout that mentions free shipping sets expectations before the landing page. A call extension removes a step from the conversion path entirely.
None of this costs extra. Google only charges when someone clicks your headline — not your extensions.
Sitelink Extensions: The Highest-Impact Extension
Sitelinks are additional links that appear below your main ad, each pointing to a specific page. A well-structured sitelink set adds 4–6 destination options to your ad — pricing, services, contact, case studies, FAQs.
Each sitelink should have a 25-character headline and two 35-character description lines. Most accounts skip the descriptions. That’s a mistake — descriptions turn sitelinks from navigation links into mini-ads.
At the campaign level, use sitelinks that match the campaign’s theme. A Google Shopping campaign sitelink to your blog is wasted. A sitelink to your returns policy or sizing guide is directly relevant and will improve click quality.
Expected CTR lift: 10–20% for brand campaigns, 5–10% for non-brand.
Callout Extensions: For Claims That Don’t Fit in the Ad
Callouts are short phrases (25 characters max) that appear in a strip below your headline and description. They’re non-clickable — pure text. Use them for differentiators: “No setup fees,” “US-based support,” “Same-day shipping.”
The trap with callouts is using them for vague marketing language: “High quality,” “Best service,” “Trusted by customers.” These waste the space and don’t influence the click decision.
Write callouts as concrete statements of fact. “Ships in 24 hours.” “All work guaranteed.” “Free cancellation.” Specific claims that a competitor can’t make without lying.
Structured Snippets: Showcase Inventory or Features
Structured snippets let you list specific items under a predefined header — Services, Products, Courses, Brands, Destinations, and others. An HVAC company might use a Services snippet listing: Furnace Repair, AC Installation, Duct Cleaning, Emergency Service.
Choose the header that fits your business. A law firm doesn’t offer “Products,” but “Practice areas” or “Services” fits. Keep each item to 25 characters or fewer. Google requires at least 3 values per snippet.
Structured snippets appear alongside callouts and sitelinks. Used together, these three extension types can fill nearly all the visual real estate in your ad.
Call Extensions: Remove a Step From the Conversion Path
Call extensions add a phone number directly to your ad. On mobile, this creates a click-to-call button — the user never has to visit your site.
For service businesses, this is often the highest-converting extension. Someone searching “emergency plumber [city]” is not browsing — they want a number. A call extension with location-specific numbers and business hours set correctly will pull conversions that would otherwise not click through at all.
Set call extensions at the campaign level for campaigns where phone leads are the primary conversion. Use call reporting (enable in account settings) to track call duration as a conversion — calls under 30 seconds are rarely leads.
Location Extensions: Show Your Address and Map Pin
Location extensions pull from your linked Google Business Profile and display your address, a map pin, and distance from the searcher. They appear in text ads and can trigger a map-tap conversion on mobile.
The prerequisite: you need a verified Google Business Profile linked to your Google Ads account. Once linked, Google automatically shows the location extension when location is relevant to the search.
For brick-and-mortar businesses, this extension is non-negotiable. The addition of a physical address signals legitimacy and gives the searcher an action (get directions) before they even hit your site.
Price Extensions: Show Pricing Before the Click
Price extensions display your products or services with individual prices in a scrollable card format below the ad. Each card has a header, description, and price — up to 8 cards.
The CTR effect of price extensions is mixed. For competitive categories, displaying pricing upfront filters out price-sensitive clicks — which is actually good. You get fewer, better-qualified clicks. For premium services, showing prices before you’ve established value can suppress CTR.
Use price extensions when your pricing is competitive or when filtering is more valuable than volume.
Image Extensions: Visual Differentiation in Text Ads
Image extensions attach a square or landscape image to your text ad. They show primarily on mobile and display as a thumbnail alongside your headline.
For ecommerce and product-based businesses, image extensions drive significantly higher CTR on mobile. For service businesses, they’re less impactful but still worth adding — a professional photo of your work or your team beats showing no image.
Images must meet Google’s content policies: no text overlays, no stock photos that look like spam. Use genuine product or service imagery.
Promotion Extensions: Time-Sensitive Offers
Promotion extensions display a discount or special offer below the ad with an orange price tag icon. They support percentage off, monetary discount, or free shipping — with optional start/end dates.
They’re most effective during actual promotional periods: Black Friday, seasonal sales, limited-time offers. Using them outside of a genuine promotion undermines credibility — if “20% off” is always running, it’s not a promotion.
Lead Form Extensions: Skip the Landing Page
Lead form extensions open a pre-filled form directly within the Google search results when clicked. The user submits their contact info without leaving Google.
The trade-off: you lose the landing page context — the page that explains why the user should trust you, what you offer, and what happens next. Lead form conversions tend to be lower quality and higher volume. For high-consideration purchases or services, a dedicated landing page nearly always converts better.
Lead form extensions make sense for high-intent, low-complexity offers: a free quote, a free consultation, a discount code.
How to Prioritize Your Extension Setup
If you’re starting from scratch, add extensions in this order:
- Sitelinks — highest impact, most versatile
- Callouts — easy to add, consistently appears
- Structured snippets — fills in product/service detail
- Call extension — critical for service businesses
- Location extension — if you have a physical location
- Image extension — especially for mobile-heavy campaigns
Check your Google Ads account extension coverage in the Ads & Extensions tab. If any extensions show “Limited” or “Below first page bid,” the issue is usually bid, not extension quality.
If you want a fast read on where your account stands, Honest flags missing extensions and other quick wins in a few minutes.
FAQ
Do ad extensions cost extra? No. Extensions expand your ad at no additional charge. You pay only when someone clicks your main headline. Clicks on sitelinks are charged at the same CPC as headline clicks.
Why aren’t my extensions showing? Extensions show when Google predicts they’ll improve performance. If your Ad Rank is low, extensions may be suppressed. Also check: extensions must be enabled (not paused), your bid must be competitive enough to earn extended ad formats, and your ad must be eligible to show in top positions.
How many sitelinks should I add? Add at least 6 unique sitelinks per campaign. Google typically shows 2–4, so having extras gives the algorithm options to show the most relevant combination.
What’s the difference between callouts and structured snippets? Callouts are free-form, short claims about your business. Structured snippets use predefined headers (Services, Products, Brands) to list specific items. Both are non-clickable. Use both together for maximum coverage.
Should I add extensions at the account, campaign, or ad group level? Add general extensions (callouts, structured snippets) at the account level for universal coverage. Add campaign-specific extensions (sitelinks, price extensions, promotions) at the campaign level. Ad group-level extensions give the most granular control but require more management time.
Do extensions affect Quality Score? Extensions affect Ad Rank through the “expected impact of extensions” component of Google’s auction formula — separate from Quality Score. A high Quality Score with poor extensions will still lose auction position to a lower-Quality-Score ad with well-configured extensions at a competitive bid.
Our Google Ads management includes full extension setup across every campaign type — including the extensions most accounts skip. See fixed-price packages for what’s included.