Google Ads Extensions Guide: Boost Your CTR in 2026

Google Ads Extensions Guide: Boost Your CTR in 2026

What Are Google Ads Extensions

Google Ads extensions — officially rebranded as “assets” by Google in 2022 — are additional pieces of information that expand your ad beyond the standard headline and description format. They add extra links, phone numbers, locations, prices, and other details directly beneath your ad copy, giving searchers more reasons and more ways to engage with your business.

For Singapore businesses running Google Ads campaigns, extensions are not optional extras. They are fundamental components that directly influence ad rank, click-through rate, and cost per click. Google factors in expected extension performance when calculating ad rank, which means advertisers who ignore extensions are handicapping themselves in every auction.

Extensions can be set at the account, campaign, or ad group level. Google decides which extensions to show based on relevance, predicted performance, and available ad space.

Why Extensions Matter for CTR

Click-through rate is the most immediate metric that extensions influence, and the impact is not marginal. Google’s own data suggests that adding extensions can improve CTR by 10 to 15 per cent on average. In competitive markets like Singapore, where multiple advertisers bid on the same keywords, that uplift can be the difference between profitable and unprofitable campaigns.

Extensions improve CTR through several mechanisms. First, they increase your ad’s visual footprint on the search results page. A larger ad occupies more screen space, pushes competitors further down, and naturally attracts more attention. On mobile devices, where screen real estate is even more limited, this effect is amplified.

Second, extensions provide additional entry points. A sitelink takes someone directly to your pricing page. A call extension lets a prospect ring you without visiting your website. Each extension creates a new path to conversion.

Third, extensions build credibility. A full complement of extensions — address, phone number, ratings, service pages — signals legitimacy. For PPC campaigns targeting high-intent queries, this credibility boost matters enormously.

Beyond CTR, extensions improve ad rank without increasing your bid. Google uses expected extension impact as one component of its ad rank formula, meaning extensions can effectively lower your cost per click while improving your position.

Types of Google Ads Extensions

Google offers a wide range of extension types. Some are manually created by advertisers, while others are automatically generated by Google. Understanding each type and its best use case is essential for maximising your ad performance.

Sitelink Extensions

Sitelinks are the most impactful and widely used extension type. They add additional links beneath your ad, each pointing to a specific page on your website. On desktop, up to six sitelinks can appear. On mobile, the format varies but typically shows fewer.

Effective sitelinks point to genuinely useful pages — not just your homepage. Strong sitelink destinations include pricing pages, specific service pages, case studies, contact forms, and popular product categories. Each sitelink includes a link title (up to 25 characters) and two optional description lines (up to 35 characters each).

For Singapore businesses, consider sitelinks that address local intent: “Singapore Pricing,” “Our Orchard Road Office,” or “SG Case Studies.” Localised sitelinks signal relevance to searchers and can lift CTR further.

Callout Extensions

Callouts are short, non-clickable text snippets that highlight key selling points. They appear as a single line of additional text beneath your ad. Examples include “Free Delivery in Singapore,” “24/7 Support,” “No Lock-in Contracts,” and “Serving SG Since 2010.”

Each callout can be up to 25 characters. You should add at least four callouts per campaign to give Google enough options to select from. Focus on differentiators — what makes your business better than the competitor’s ad directly above or below yours.

Structured Snippet Extensions

Structured snippets let you highlight specific aspects of your products or services under predefined headers. Available headers include Amenities, Brands, Courses, Degree programmes, Destinations, Featured hotels, Insurance coverage, Models, Neighbourhoods, Service catalogue, Shows, Styles, and Types.

For a Google Ads agency in Singapore, a structured snippet under “Service catalogue” might list “Search Ads, Display Ads, Shopping Ads, YouTube Ads, Remarketing.” This gives searchers a quick overview of your capabilities without cluttering the main ad copy.

Call Extensions

Call extensions add a phone number to your ad. On mobile, this becomes a tap-to-call button. For businesses that generate leads or sales via phone — clinics, law firms, home services, restaurants — call extensions are essential.

You can schedule call extensions to show only during business hours, which prevents missed calls and wasted clicks. In Singapore, use a local number (starting with +65) rather than a toll-free or international number to maximise trust.

Location Extensions

Location extensions show your business address, a map pin, and the distance from the searcher’s location. They require a linked Google Business Profile. For businesses with physical locations in Singapore, these extensions are critical for driving foot traffic.

Price Extensions

Price extensions display your products or services with their corresponding prices in a card-like format. They are particularly effective for businesses with clearly defined service tiers or product pricing. Showing prices upfront filters out unqualified clicks and improves conversion rates from those who do click.

Image Extensions

Image extensions add a small, relevant image beside your text ad. Use high-quality images relevant to the specific ad group rather than generic brand imagery.

Lead Form Extensions

Lead form extensions let users submit contact information directly from the ad, pre-populated with their Google account details. This reduces friction but means leads may be lower intent than those who complete a full website form.

Promotion Extensions

Promotion extensions highlight specific sales or offers with a price tag icon. They are ideal for seasonal promotions, limited-time offers, and clearance events. You can set occasion tags (Chinese New Year, National Day, Black Friday) and specify monetary or percentage discounts.

Automated Extensions

Google can automatically create extensions based on your landing page content, ad copy, and account information. Automated extensions include dynamic sitelinks, dynamic callouts, dynamic structured snippets, seller ratings, and more. While you cannot directly control automated extensions, you can review and remove specific ones that are unhelpful.

Best Practices for Ad Extensions

Simply adding extensions is not enough. How you implement them determines whether they help or hinder your campaigns. Follow these best practices to extract maximum value from every extension type.

Add every relevant extension type. Google recommends adding at least four extension types per campaign. More extensions give Google more options to assemble the optimal ad for each auction. There is no penalty for having extensions that do not show — but there is a cost to missing extensions that could have shown.

Write extensions at the ad group level where possible. Campaign-level extensions work as defaults, but ad-group-level extensions can be tailored to specific keyword themes. A campaign selling both “web design” and “SEO services” should have different sitelinks and callouts for each ad group.

Refresh extensions regularly. Stale callouts and outdated promotions erode trust. Review your extensions quarterly at minimum. Update sitelinks when you add new landing pages. Remove promotion extensions after the offer expires. Keep callouts current with your latest capabilities and differentiators.

Test extension variations. Create multiple versions of each extension type. Google will automatically optimise toward the best-performing combinations, but it needs options to test. For sitelinks, aim for eight to ten at the campaign level so Google can rotate and select the best performers.

Align extensions with ad copy. Extensions should complement your headlines and descriptions, not repeat them. If your headline says “Free Consultation,” do not waste a callout repeating the same message. Use the callout space for additional selling points.

Understanding Google Ads costs in Singapore helps you appreciate why extensions matter: they improve performance without increasing your budget.

Extensions and Quality Score

The relationship between extensions and Quality Score is often misunderstood. Extensions do not directly influence your visible Quality Score — the 1 to 10 number you see in your account. However, they do influence ad rank through a separate component that Google calculates at auction time.

Google’s ad rank formula includes: bid amount, Quality Score components (expected CTR, ad relevance, landing page experience), and the expected impact of extensions and other ad formats. This means extensions function as a parallel lever to Quality Score for improving ad rank.

In practical terms, an ad with strong extensions can outrank a competitor with a higher bid or better Quality Score. This is why extensions are considered a “free” performance lever — they cost nothing to add but can meaningfully change auction outcomes.

Extensions also indirectly improve Quality Score over time. By improving CTR, extensions contribute to a better expected CTR component, which is the most heavily weighted Quality Score factor. This creates a virtuous cycle: better extensions lead to better CTR, which leads to better Quality Score, which leads to lower CPCs and higher positions.

For competitive Singapore markets where CPCs are high — legal services, financial products, medical aesthetics — this compounding effect can translate to significant cost savings over a campaign’s lifetime.

Setting Up Extensions Step by Step

Setting up extensions correctly from the outset saves time and maximises impact. Follow this process when launching or auditing extensions for any campaign.

Step 1: Audit existing extensions. Before adding anything, review what you already have. Navigate to Ads & Assets, then Assets in your Google Ads account. Check which extensions are active, paused, or disapproved. Remove anything outdated or underperforming.

Step 2: Map extensions to campaign structure. List every campaign and its primary objective. Lead generation campaigns need call extensions and lead form extensions. E-commerce campaigns benefit from price extensions and promotion extensions. Brand campaigns should emphasise sitelinks and structured snippets.

Step 3: Create sitelinks first. Sitelinks have the biggest impact on CTR. Create eight to ten sitelinks per campaign, each pointing to a unique, high-value landing page. Write compelling link titles and fill in both description lines for every sitelink.

Step 4: Write callouts and structured snippets. Draft at least six callouts per campaign. Focus on unique value propositions, guarantees, awards, and factual differentiators. Select the most relevant structured snippet header and list at least four values.

Step 5: Set up call and location extensions. Link your Google Business Profile for location extensions. Add your phone number for call extensions and configure scheduling to match your business hours. Enable call reporting to track which extensions drive calls.

Step 6: Add secondary extensions. Once the core extensions are in place, layer on price extensions, image extensions, promotion extensions, and any other relevant types. Each addition gives Google more material to work with.

Step 7: Create ad-group-level overrides. For your highest-volume ad groups, create tailored extensions that match the specific keyword theme. These override campaign-level defaults and typically perform better due to higher relevance.

Step 8: Schedule regular reviews. Set a monthly reminder to review extension performance. Pause low-performing extensions, test new variations, and ensure all information remains accurate.

Common Extension Mistakes to Avoid

Even experienced advertisers make avoidable mistakes with extensions. These errors reduce performance and can sometimes lead to disapprovals.

Using only campaign-level extensions. Campaign-level extensions are a starting point, not the finish line. High-value ad groups deserve bespoke extensions. A generic sitelink to “Our Services” underperforms compared to a specific sitelink matching the ad group’s keyword theme.

Neglecting mobile-specific extensions. Mobile and desktop users have different needs. Call extensions matter more on mobile. Sitelink descriptions display differently on mobile. Review your extension performance by device and adjust accordingly.

Setting and forgetting. Extensions that were relevant six months ago may be actively harmful today. Outdated pricing in price extensions, expired promotions, discontinued services in sitelinks — all of these erode trust and waste clicks.

Repeating ad copy in extensions. Each piece of your ad should add new information. If your headline mentions “Free Shipping,” your callout should say something different. Repetition wastes valuable real estate that could be used to convey additional benefits.

Ignoring disapproved extensions. Google disapproves extensions for policy violations, broken URLs, or misleading content. Disapproved extensions do not show, but many advertisers fail to notice them sitting in their account. Check the status column regularly.

Not linking Google Business Profile. Without a linked Business Profile, you cannot use location extensions or access certain automated extensions. For any business with a physical presence in Singapore, this is a missed opportunity.

Too few extension variations. Adding exactly two sitelinks or one callout gives Google very little to work with. More variations enable better optimisation. Aim for abundance in every extension type.

Frequently Asked Questions

How many Google Ads extensions should I use per campaign?

Use every extension type that is relevant to your business and campaign objective. At minimum, every campaign should have sitelinks, callouts, and structured snippets. Add call, location, price, and image extensions where appropriate. There is no penalty for having many extensions — Google selects the best combination for each auction.

Do Google Ads extensions cost extra per click?

Clicking on your main headline costs your standard CPC. Clicking on a sitelink also costs your standard CPC. Call extensions charge per click (or per call, if you use call-only campaigns). Most other extensions — callouts, structured snippets, location — are not independently clickable and do not incur additional charges. You pay only when someone interacts with a clickable element.

Why are my extensions not showing in Google Ads?

Extensions may not show for several reasons: your ad rank is too low (extensions require a minimum ad rank threshold), the extension is disapproved, your bid is insufficient, or Google’s algorithm predicts the extension will not improve performance for that specific query. Check the status column in your Assets tab for specific issues and ensure your campaigns have sufficient budget and competitive bids.

Can I use Google Ads extensions for competitor keywords?

You can use extensions on campaigns targeting competitor keywords, but be careful with your extension content. Sitelinks and callouts should not reference competitor brand names, as this violates Google’s trademark policies in most cases. Focus on highlighting your own strengths and differentiators rather than directly comparing to the competitor.

How long does it take for new extensions to start showing?

New extensions typically enter review within one business day. Once approved, they can start appearing in auctions immediately. However, Google may take a few weeks to accumulate enough data to optimise which extensions show for which queries. During this learning period, monitor performance but avoid making drastic changes.