Google Display Ads for Ecommerce
How Display Ads Differ From Search and Shopping
The fundamental difference is intent. When someone searches "buy wireless headphones" and clicks a Shopping or Search ad, they have active purchase intent. Display ads show up while someone reads a news article, checks their email, or watches a YouTube video, so there is no active search intent at the moment of impression. This changes everything about how you use Display ads, what you should expect from them, and how you measure success.
Display ads typically produce click-through rates of 0.5% to 1.0%, compared to 3% to 8% for Search ads and 1% to 3% for Shopping ads. Conversion rates are similarly lower, often 0.5% to 1.5% compared to 2% to 5% for Search. This does not mean Display ads are ineffective, it means they serve a different purpose. Display campaigns excel at reaching large audiences at a low cost per impression, introducing your brand to potential customers who might not be searching for your products yet, and remarketing to people who already visited your store.
The cost structure also differs. Display clicks typically cost $0.25 to $1.50, significantly less than Search clicks at $1.00 to $5.00 or Shopping clicks at $0.50 to $3.00. This lower cost per click makes Display viable for top-of-funnel awareness campaigns where the goal is getting your brand and products in front of as many relevant eyes as possible rather than generating immediate sales.
Display Ad Formats for Ecommerce
Responsive display ads are the default and most common format. You upload your logo, product images (up to 15), headlines (up to 5), and descriptions (up to 5), and Google automatically assembles them into different combinations and sizes to fit available ad placements. This format works across all devices and screen sizes, and Google optimizes which combinations perform best over time. For ecommerce, use high-quality product images with clean backgrounds and lifestyle shots showing products in use.
Uploaded image ads let you design exact ad creatives in specific sizes. If your brand has a strong visual identity and you want complete control over how your ads look, upload custom-designed banner ads in the most common sizes: 300x250, 728x90, 160x600, 300x600, and 320x50 for mobile. The downside is that you need multiple sizes for full coverage, and custom image ads cannot automatically resize to fit every placement. Most ecommerce stores get better reach and lower costs with responsive display ads.
Dynamic remarketing ads automatically show products that individual visitors previously viewed on your store. If someone looked at a specific pair of shoes on your site and left without buying, dynamic remarketing shows them an ad featuring that exact pair of shoes with the current price as they browse other websites. These are the most effective Display ads for ecommerce because they combine the visual product format with individual-level personalization. Setting up dynamic remarketing requires a product feed in Merchant Center and the Google Ads remarketing tag with custom parameters on your product pages.
Targeting Options That Work for Ecommerce
Remarketing audiences are the highest-performing Display targeting option for ecommerce. Create audiences based on people who visited your store, people who viewed specific product categories, people who added items to their cart but did not purchase, and people who purchased (for cross-selling and loyalty campaigns). Cart abandoners typically produce the best return on Display spend because they came very close to converting and often just need a reminder. Our remarketing guide covers audience setup in detail.
Custom intent audiences let you target people who have recently searched for specific keywords on Google or visited competitor websites. This bridges the gap between Search intent and Display reach. Create a custom audience using your top-performing Search keywords and competitor URLs, and Google will find people across the Display Network who match those signals. This is the closest Display targeting gets to Search-level intent.
In-market audiences are Google-curated segments of people who are actively researching or comparing products in a specific category. Google identifies these users based on their recent search behavior, website visits, and content consumption. For ecommerce, look for in-market audiences that align with your product categories. A furniture store might target "Home Furniture" and "Home Decor" in-market segments to reach people actively shopping for those products.
Affinity audiences target people based on long-term interests and habits rather than current buying intent. These work for brand awareness campaigns but typically produce the lowest direct conversion rates because you are reaching people based on general interests, not active shopping behavior. An outdoor gear store targeting the "outdoor enthusiasts" affinity audience reaches a relevant audience, but most of those people are not currently looking to buy anything.
Placement targeting lets you choose specific websites where your ads appear. If you know that your target customers read certain industry blogs, news sites, or forums, you can specifically target those sites. This gives you complete control over context but dramatically limits your reach. Use placement targeting selectively for high-value placements where context alignment matters, not as your primary targeting strategy.
Creative Best Practices for Ecommerce Display
Display ads have about 1 to 2 seconds to capture attention before the viewer's eyes move on. Your creative needs to communicate your product's value instantly without requiring the viewer to read small text or think about what they are seeing.
Use product images that are visually striking and immediately identifiable. Show the product in use rather than on a white background when possible, because lifestyle images tend to generate higher click-through rates on the Display Network. A backpack shown on a hiker on a mountain trail outperforms the same backpack floating on a white background in a display ad context.
Keep text minimal. Your headline should be 3 to 7 words that communicate your primary value proposition: "Handmade Leather Bags, Free Shipping" is better than "Discover Our New Collection of Premium Handcrafted Genuine Leather Bags for Men and Women." The viewer will not read a paragraph on a banner ad. One benefit, one call to action, one clean product image.
Include your price or a promotional offer when possible. "Starting at $29.99" or "25% Off This Week" gives the viewer a concrete reason to click. Ads with specific pricing information tend to attract more qualified clicks because shoppers self-select based on whether the price fits their budget before clicking.
Test multiple creative variations. Upload at least 5 different product images and 3 to 5 headline variations in your responsive display ads. Google will test different combinations and optimize toward the best performers. Review the combinations report monthly to see which images and headlines work best, and replace underperformers with new variations.
When to Use Display Ads in Your Strategy
Display ads should not be your first Google Ads campaign type. Start with Shopping ads and Search campaigns because they capture active buying intent and produce more immediate, measurable returns. Add Display campaigns after your Search and Shopping campaigns are profitable and you are looking to expand your reach.
The exception is remarketing, which should be set up as soon as your store generates at least 100 visitors per day. A remarketing Display campaign targeting cart abandoners is often the highest-returning campaign in an ecommerce account, producing conversion rates 2 to 3 times higher than prospecting Display campaigns at a fraction of the cost per acquisition.
For prospecting (reaching new potential customers), Display works best when you have a clearly defined target audience, visually appealing products, and enough budget to invest in the longer conversion cycle. Display prospects often take 7 to 14 days and multiple touchpoints before converting, so judge performance over a 30-day window rather than looking at same-day conversions.
Budget Display campaigns conservatively. Allocate 10% to 20% of your total Google Ads budget to Display, with the majority going to remarketing and a smaller portion to prospecting audiences. The bulk of your budget should remain in Shopping and Search campaigns where return on ad spend is highest and most predictable.
Measuring Display Campaign Performance
Do not judge Display campaigns by the same metrics you use for Search and Shopping. Direct last-click ROAS will almost always look worse for Display because these ads reach people earlier in the buying journey who often convert through a different channel later. A shopper might see your Display ad on Monday, remember your brand, search for you on Wednesday, and buy through your branded Search campaign. The Search campaign gets the conversion credit, but the Display ad started the journey.
Use Google Ads view-through conversion reporting to see how many people saw your Display ad and then converted within a set timeframe without clicking the ad directly. Check the Assisted Conversions report in Google Analytics to understand how Display interactions contribute to conversions attributed to other channels. These reports give you a more accurate picture of Display campaign value.
For remarketing campaigns, measure cost per conversion directly because these audiences are close enough to the purchase decision that last-click attribution is reasonably accurate. For prospecting campaigns, focus on reach, frequency, and cost per thousand impressions (CPM) alongside assisted conversion metrics. If your prospecting Display campaign reaches 100,000 relevant shoppers per month at a $3 CPM, that $300 investment in brand awareness can produce significant lift in branded searches and direct visits over time.