Google Ads Extensions: Every Type Explained With Examples

What Are Google Ads Extensions?

Extensions expand your ad's real estate.

Google Ads extensions (now officially called "assets") are additional pieces of information that attach to your text ads — links, phone numbers, prices, images, and more. According to Google Ads Help, assets give people more reasons to click by providing useful information and increasing ad visibility on the search results page. Google selects which assets to show based on predicted performance, ad rank, and available space.

A standard search ad contains three headlines and two descriptions. That is roughly 270 characters of real estate. Extensions stretch that footprint to include direct links to product categories, pricing tables, your phone number, store locations, and promotional offers — without any extra cost per click.

Google renamed extensions to "assets" in 2022, but the advertising community and most documentation still uses "extensions" interchangeably. Throughout this guide, both terms refer to the same feature.

For ecommerce brands running Google Ads campaigns, extensions are one of the few free levers available. You pay nothing extra for the additional space. You only pay the same CPC when someone clicks — whether they click your headline, a sitelink, or your phone number.

The impact is measurable. Google reports that ads with extensions achieve a 10–15% higher CTR on average compared to the same ads without them. That CTR lift also feeds directly into Quality Score, which lowers your CPC. More clicks at a lower cost — that is the math behind extensions.

How Do Extensions Affect Ad Rank and Quality Score?

Google uses expected impact from extensions as a direct factor in Ad Rank calculation. According to Google Ads Help, Ad Rank is determined by your bid, ad quality (including expected CTR, ad relevance, and landing page experience), the Ad Rank thresholds, search context, and the expected impact of your assets and other ad formats. This means adding relevant extensions can improve your position even without raising your bid.

Ad Rank determines both whether your ad shows and where it appears. Extensions influence Ad Rank in two ways:

Direct factor. Google explicitly includes the expected impact of extensions in its Ad Rank formula. An ad with four relevant extensions competes more effectively than an identical ad with none — even at the same bid.

Indirect boost via CTR. Extensions increase CTR. Higher CTR improves expected CTR, which is one of the three components of Quality Score. Higher Quality Score reduces the CPC needed to maintain your position.

The practical result: advertisers who fully implement extensions pay less per click for the same ad position. On competitive keywords where CPC already runs high, this saving compounds across thousands of clicks per month.

One thing to understand — Google does not guarantee that your extensions will show. The system runs an auction-time evaluation and only displays extensions when they are predicted to improve performance and when there is sufficient ad space. The more relevant your extensions, the more frequently they appear.

What Are All the Google Ads Extension Types?

Google Ads currently offers 12 extension types (assets) across three categories: manual assets that you create, automated assets that Google generates, and account-level assets. Each serves a distinct purpose — from driving traffic to specific pages (sitelinks) to showing product prices (price assets) to encouraging calls (call assets). The full list is maintained on Google's asset types page.

Here is every extension type, what it does, and when to use it:

Not every extension type suits every business. Ecommerce brands typically get the most value from sitelinks, callouts, structured snippets, price, image, and promotion extensions. Service businesses lean heavier on call, location, and lead form extensions.

Which Extensions Have the Biggest CTR Impact?

Sitelinks produce the largest CTR lift among all extension types, increasing click-through rates by 10–20% on average. Image extensions follow closely, with Google reporting up to 10% CTR improvement for mobile search ads. The impact varies by industry, ad position, and device — but the data consistently shows that more extension types active means higher overall CTR.

Here is the measured CTR impact by extension type based on aggregated industry data:

These numbers are averages. Your actual lift depends on how relevant your extensions are to the search query, your ad position (extensions show more frequently in top positions), and your industry vertical.

The compounding effect matters most. An ad running sitelinks alone might see a 15% CTR lift. The same ad running sitelinks, callouts, structured snippets, and images might see a 25–30% combined lift — because the ad occupies more visual space and provides more reasons to click.

How Do You Set Up Sitelink Extensions?

Sitelinks are additional links that appear below your main ad, each pointing to a specific page on your site. They are the single most impactful extension type. Google recommends adding at least 4 sitelinks per campaign, with unique descriptions for each, to maximize the chances of them showing. Setup takes under 10 minutes per campaign.

Sitelinks work at both campaign and ad group levels. Campaign-level sitelinks apply to all ads in the campaign. Ad group-level sitelinks override campaign-level ones for that specific ad group — useful when different ad groups target different product categories.

Sitelink setup steps

1. Open your Google Ads account and navigate to Ads & assets > Assets
2. Click the blue + button and select Sitelink
3. Choose whether to apply at account, campaign, or ad group level
4. Enter the sitelink text (up to 25 characters)
5. Add description line 1 and line 2 (up to 35 characters each)
6. Enter the final URL — the page users land on when clicking
7. Repeat for at least 3 more sitelinks (Google needs a minimum of 2, recommends 4+)
8. Click Save

Sitelink examples for ecommerce

• "Shop New Arrivals" → links to new arrivals page
• "Sale — Up to 40% Off" → links to sale category
• "Free Shipping Over $50" → links to shipping policy
• "Customer Reviews" → links to reviews or testimonials page
• "Size Guide" → links to sizing chart (reduces returns)

Strong sitelinks address the next logical question after someone sees your ad. If your ad promotes running shoes, your sitelinks should cover "Men's Running Shoes," "Women's Running Shoes," "Sale Shoes," and "Free Returns" — not generic pages like "About Us."

Each sitelink should land on a distinct page. Google penalizes sitelinks that all point to the same URL or to pages with near-identical content. Variety signals relevance, and relevance determines how often your sitelinks appear.

How Do Callout and Structured Snippet Extensions Work?

Callouts are short, non-clickable text phrases that appear below your ad description — "Free Shipping," "24/7 Support," "Price Match Guarantee." Structured snippets show a header-value format listing specific categories, brands, or types. Both add context without requiring extra landing pages. Google recommends at least 4 callouts and 2 structured snippet headers per campaign.

Callout extensions

Callouts highlight selling points that apply across your entire campaign. They are 25 characters each, non-clickable, and show as a comma-separated list.

Effective callout examples:

• Free Shipping Over $50
• 30-Day Free Returns
• 4.8★ Rated on Trustpilot
• Handmade in the USA
• Same-Day Dispatch
• Secure Checkout
• No Subscription Required
• Family-Owned Since 2018

Weak callouts state the obvious ("Quality Products," "Great Service"). Strong callouts are specific, measurable, and give the searcher a reason to choose you over the competitor directly above or below.

Structured snippet extensions

Structured snippets use predefined headers from Google's list:

• Amenities, Brands, Courses, Degree programs, Destinations, Featured hotels, Insurance coverage, Models, Neighborhoods, Service catalog, Shows, Styles, Types

For ecommerce, the most useful headers are Brands, Types, Styles, and Models.

Example for a fashion retailer:

• Types: Dresses, Tops, Jeans, Outerwear, Accessories
• Brands: Levi's, Nike, Adidas, Reformation, Everlane
• Styles: Casual, Formal, Athletic, Streetwear, Vintage

Example for an electronics store:

• Types: Laptops, Tablets, Monitors, Keyboards, Headphones
• Brands: Apple, Samsung, Sony, Dell, Bose

Structured snippets work best when they match what the searcher is looking for. If someone searches "buy Nike running shoes" and your structured snippet lists "Brands: Nike, Adidas, New Balance" — that match reinforces relevance and increases the likelihood of a click.

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Building high-converting ads requires more than extensions. Your ad copy, landing pages, and bidding strategy need to work together. ConversionStudio analyzes your competitive landscape and generates conversion-optimized ad creative — so every element of your campaign pulls in the same direction.

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How Do Price, Promotion, and Image Extensions Work?

Price extensions show clickable pricing cards for specific products or services. Promotion extensions display a deal tag with optional discount codes. Image extensions add visual thumbnails next to your text ad on mobile and desktop. These three extensions are especially powerful for ecommerce because they pre-qualify clicks — users see prices and offers before clicking, reducing wasted spend on unqualified traffic.

Price extensions

Price extensions display a row of cards (3–8) showing product names, descriptions, prices, and links. Each card is clickable and links to a specific product or category page.

Setup tips:

• Use at least 3 price items (Google requires a minimum of 3)
• Keep prices current — outdated prices damage trust and violate policy
• Link each card to the specific product page, not your homepage
• Use the "price qualifier" field: "From $29," "Up to $150," "Average $65"

Price extensions pre-qualify traffic. A searcher who sees your product at $89 and still clicks is far more likely to convert than someone who clicks with no price expectation and discovers a cost they cannot afford.

Promotion extensions

Promotion extensions add a price tag icon and deal text to your ad — "15% off with code SUMMER" or "$20 off orders over $100."

Options include:

• Occasion tags: New Year's, Valentine's Day, Back to School, Black Friday, etc.
• Discount types: Monetary discount, percent discount, up to monetary, up to percent
• Promo codes: Optional code field displayed with the offer
• Scheduling: Set start and end dates for time-limited promotions

For ecommerce brands running seasonal campaigns, promotion extensions let you highlight offers without rewriting ad copy. Swap the promotion extension when the sale changes — your core ads stay intact.

Image extensions

Image extensions add a square or landscape image thumbnail next to your text ad. On mobile, this visual element significantly increases ad prominence.

Requirements:

• Square images: 1200 x 1200 pixels (minimum 300 x 300)
• Landscape images: 1200 x 628 pixels (minimum 600 x 314)
• No text overlays, watermarks, or collages allowed
• Images must be relevant to the ad and landing page
• Account must have a good compliance history

Product images work well for ecommerce. Lifestyle shots of someone wearing or using the product outperform plain product-on-white images in most verticals.

How Should You Use Call, Location, and Lead Form Extensions?

Call extensions add a phone number or click-to-call button. Location extensions show your business address with a link to Google Maps. Lead form extensions embed a contact form directly in the ad. These extensions are most valuable for businesses with phone sales teams, physical locations, or lead generation funnels — though some ecommerce brands benefit from call and location extensions when they offer local pickup or phone support.

Call extensions

Call extensions display a clickable phone number on mobile and a number on desktop. You pay when someone clicks the phone number, just as you would for a headline click.

Use call extensions when:

• You sell high-consideration products where buyers want to talk before purchasing
• You offer phone support as a differentiator
• You have a sales team that handles inbound calls
• Your average order value justifies the cost of a phone interaction

Set up call reporting in Google Ads to track which campaigns and keywords drive phone calls. This data feeds into your bidding strategy optimization.

Location extensions

Location extensions pull from your Google Business Profile. They show your address, a map snippet, and distance from the searcher. Clicking opens Google Maps with directions.

For ecommerce brands, location extensions are valuable if you have:

• Physical retail locations
• Warehouse pickup options
• Pop-up shops or trade show booths

Lead form extensions

Lead form extensions open a form directly within the ad. The user never leaves the search results page. Fields can include name, email, phone number, postal code, and custom questions.

Lead forms reduce friction but tend to produce lower-quality leads compared to full landing page submissions. Test lead quality from form extensions against your standard funnel before scaling spend.

What Are Automated Extensions and Should You Use Them?

Automated extensions (auto-generated assets) are created by Google without your input. Google's system pulls information from your landing pages, ad copy, and account history to generate dynamic sitelinks, callouts, structured snippets, and seller ratings automatically. According to Google Ads Help, you can review and remove individual automated assets but cannot fully disable the feature at the account level.

Automated extensions include:

• Dynamic sitelinks — Google creates links to relevant pages on your site
• Dynamic callouts — pulled from landing page content
• Dynamic structured snippets — categories extracted from your site
• Seller ratings — star ratings aggregated from third-party review sites (Google Customer Reviews, Trustpilot, etc.)
• Longer ad headlines — Google may extend your headlines using landing page text

Should you rely on automated extensions?

No. Always create manual extensions first. Manual extensions give you control over messaging, URLs, and which benefits get highlighted. Automated extensions fill gaps — they show when Google predicts they will improve performance and when you have not added the manual equivalent.

Review automated extensions monthly:

1. Go to Ads & assets > Assets
2. Filter by Association type: Automated
3. Check each automated asset for accuracy
4. Remove any that contain incorrect information or off-brand messaging

Seller ratings are the exception — they are exclusively automated and cannot be created manually. To qualify, your business needs at least 100 unique reviews and a minimum 3.5-star rating from a Google-approved source.

What Are the Most Common Extension Mistakes?

The three most damaging extension mistakes are: running no extensions at all (surrendering free CTR lift), using generic callouts that say nothing specific ("Quality Products," "Best Service"), and failing to update extensions when promotions end or product lines change. Each mistake either leaves performance on the table or actively degrades ad relevance.

Mistake 1: Not adding enough extensions

Google recommends populating every relevant extension type. Most advertisers add sitelinks and stop. Each additional extension type increases the probability that Google has something useful to show — and increases the visual footprint of your ad.

Minimum recommended setup:

• 4+ sitelinks with descriptions
• 4+ callouts
• 2+ structured snippet headers with 4+ values each
• Price extensions (if applicable)
• Image extensions

Mistake 2: Duplicate messaging across extensions

Your callouts, sitelinks, and ad copy should not repeat the same information. If your headline says "Free Shipping," your callout should not also say "Free Shipping." Use each extension to add new information.

Mistake 3: Set-and-forget extensions

Extensions need maintenance. Promotion extensions with expired dates hurt credibility. Price extensions with outdated prices violate Google's policies. Sitelinks pointing to deleted pages create broken experiences.

Build a monthly review cadence:

• Check all promotion extension dates
• Verify price extension accuracy
• Test sitelink URLs for 404 errors
• Review automated extension quality
• Update callouts to reflect current offers

Mistake 4: Ignoring ad group-level extensions

Campaign-level extensions apply broadly. But ad groups with distinct product categories benefit from tailored extensions. A running shoes ad group should have different sitelinks and structured snippets than a hiking boots ad group within the same campaign.

Mistake 5: Weak responsive search ad and extension alignment

Your extensions should complement your responsive search ad headlines and descriptions. Google assembles combinations at auction time — mismatched messaging between your ad copy and extensions confuses the searcher and reduces CTR.

How Do You Measure Extension Performance?

Google Ads reports extension performance at the asset level. Navigate to Ads & assets > Assets, then click on any extension type to see impressions, clicks, CTR, and conversions. You can segment by "This extension vs. other" to see incremental performance — how much the extension contributed compared to ads showing without it.

Key metrics to track:

• Extension CTR — is the extension getting clicks relative to impressions?
• Incremental clicks — "This extension vs. other" report shows the lift
• Conversion rate from extension clicks — are sitelink clicks converting at a different rate than headline clicks?
• Extension display rate — what percentage of impressions show the extension?

Low display rate means Google does not find the extension relevant enough to show. Rewrite the extension to better match your keywords and landing pages.

Low CTR on an extension that displays frequently means the copy is not compelling. Test new text — treat extensions with the same iterative testing mindset you apply to ad copy.

Use the segments dropdown to break performance by device, time, and network. Mobile callout performance often differs from desktop. Schedule adjustments can improve extension ROI — for example, call extensions might only make sense during business hours.

Frequently Asked Questions

Are Google Ads extensions free?

Yes. There is no extra cost to add extensions. You pay the same CPC whether someone clicks your headline or a sitelink. The only exception is call extensions on mobile, where a click-to-call counts as a paid click at your standard CPC.

How many extensions should I add per campaign?

Add every extension type that is relevant to your business. Google recommends at least 4 sitelinks, 4 callouts, and 2 structured snippet headers per campaign. More extensions give Google more options to assemble high-performing ad combinations.

Do extensions always show on my ads?

No. Google decides at auction time whether to show extensions based on your Ad Rank, the predicted performance impact, and available space on the results page. Ads in lower positions show fewer extensions. Higher Ad Rank increases the likelihood that your extensions display.

What is the difference between extensions and assets?

They are the same thing. Google renamed "extensions" to "assets" in 2022 to unify the terminology with other ad components (headlines, descriptions, images). Most advertisers and third-party tools still use "extensions."

Can I use extensions with Performance Max campaigns?

Performance Max campaigns use assets differently. You upload headlines, descriptions, images, and videos into an asset group — and Google assembles combinations across Search, Display, YouTube, Gmail, and Maps. Traditional extension setup applies to Search and Shopping campaigns. For Performance Max, see our guide on Performance Max campaigns.

Keep Reading

• Google Ads for Ecommerce: The Complete Strategy Guide
• Google Ads Bidding Strategies: How to Maximize ROAS
• Responsive Search Ads: Best Practices for Higher CTR
• Google Ads Quality Score: What It Is and How to Improve It