Display and Banner Advertising: How to Design, Target and Measure Campaigns
Table of Contents
What Are Display and Banner Ads?
Display advertising refers to visual advertisements shown on websites, apps, and social media platforms outside of search engine results pages. Banner ads are the most recognisable format — rectangular image or multimedia advertisements that appear within webpage content, in sidebars, or at the top and bottom of pages.
This display banner ads guide covers the practical elements of creating, targeting, and measuring display campaigns that deliver measurable results. While search ads capture existing demand from people actively looking for something, display ads create demand by reaching potential customers while they browse content, read news, check email, or use apps.
The display advertising ecosystem is vast. Google Display Network alone reaches over 90 per cent of internet users worldwide across more than two million websites and apps. Add in programmatic platforms, social media display placements, and direct publisher buys, and the potential reach is enormous.
For Singapore businesses, display advertising serves several strategic purposes: building brand awareness among target audiences, retargeting website visitors who did not convert, promoting special offers and events, and supporting upper-funnel marketing activities that feed your search advertising campaigns with warmer audiences.
Ad Formats, Sizes and Specifications
Understanding the available formats and sizes is essential for this display banner ads guide to be actionable. The Interactive Advertising Bureau (IAB) defines standard ad sizes that most platforms and publishers support.
Most important sizes to create:
Medium Rectangle (300×250): The most widely available ad placement across websites. This size appears within article content and in sidebars, making it highly visible.
Leaderboard (728×90): Typically displayed at the top of web pages. Strong for brand visibility but can suffer from banner blindness on desktop.
Mobile Leaderboard (320×50): The standard mobile banner ad. Given that mobile traffic dominates in Singapore, this size is essential.
Large Rectangle (336×280): A larger version of the medium rectangle, available on many publishers and often delivers better performance due to its size.
Wide Skyscraper (160×600): A tall, narrow format that appears in page sidebars. Good for sustained visibility as users scroll through content.
Beyond static banners:
Responsive display ads automatically adjust their size, format, and appearance to fit available ad spaces. On Google Display Network, responsive ads are the default format and typically outperform static banners because they can serve in more placements.
HTML5 animated banners allow movement and interactivity, capturing attention more effectively than static images. Keep animations brief — most platforms limit animation to 30 seconds — and ensure the final frame displays your key message and call to action clearly.
Video display ads (typically 15 to 30 seconds) are increasingly popular and tend to generate higher engagement rates than static formats.
Designing Effective Banner Ads
The average internet user is exposed to thousands of display ads daily. Your banner must cut through this noise in a fraction of a second. Effective banner design follows several proven principles.
Visual hierarchy: Establish a clear visual hierarchy with three elements — your brand logo, your value proposition, and your call to action. The viewer’s eye should move naturally from one element to the next within one to two seconds.
Simplicity: Less is more in banner design. Use one primary message, minimal text (aim for fewer than ten words for the headline), and clean visuals. Cluttered banners with multiple messages and competing elements get ignored.
Contrast and colour: Use high-contrast colour combinations to ensure readability. Your call-to-action button should be the most visually prominent element — use a contrasting colour that draws the eye. Ensure your ad stands out from typical webpage backgrounds without being visually jarring.
Call to action: Every banner needs a clear, specific call to action. “Learn More,” “Get Quote,” “Shop Now,” and “Sign Up Free” outperform vague buttons like “Click Here.” Make the CTA button look clickable with appropriate styling — rounded corners, drop shadows, or contrasting colours.
Brand consistency: Your display ads should be immediately recognisable as belonging to your brand. Use your brand colours, fonts, and visual style. Consistency across all touchpoints, including your website design, builds recognition and trust over time.
Mobile-first design: Design for small screens first. If your message is clear and compelling at 320×50 pixels, it will work at larger sizes. Test your designs on actual mobile devices to verify readability and tap-target sizes for buttons.
Targeting Options for Display Campaigns
Targeting is where display advertising becomes truly powerful. Rather than showing your ads to everyone, you can narrow your audience to the people most likely to be interested in your product or service.
Contextual targeting places your ads on websites and pages related to specific topics or keywords. A catering company might target pages about event planning, corporate functions, or wedding venues. This approach reaches people in a relevant mindset without requiring any prior data about them.
Audience targeting focuses on who sees your ad rather than where it appears. Options include:
In-market audiences: People actively researching or comparing products in your category. Google identifies these users through their recent search and browsing behaviour.
Affinity audiences: People with long-term interests in specific topics like cooking, technology, or fitness. These audiences are broader and better suited for awareness campaigns.
Custom audiences: Audiences you build based on specific keywords, URLs, or apps that your ideal customer interacts with.
Remarketing targets people who have previously visited your website or interacted with your content. This is often the highest-performing display targeting method because you are reaching people who have already expressed interest. Our programmatic retargeting guide covers advanced remarketing strategies in detail.
Demographic targeting filters by age, gender, household income, and parental status. Layer demographics on top of other targeting methods to refine your audience further.
Placement targeting lets you choose specific websites, YouTube channels, or apps where your ads appear. This gives you maximum control over brand safety and context but limits reach.
Bidding Strategies and Budget Allocation
Display advertising typically costs less per click or impression than search advertising, but efficiency varies widely based on your targeting, creatives, and bidding strategy.
Common bidding models:
CPM (Cost per thousand impressions): You pay for every 1,000 times your ad is shown. Best for brand awareness campaigns where visibility is the primary goal. Typical CPMs in Singapore range from SGD 2 to SGD 15, depending on targeting specificity.
CPC (Cost per click): You pay only when someone clicks your ad. Display CPCs in Singapore typically range from SGD 0.20 to SGD 2.00, significantly lower than search CPCs. Best for traffic-driving campaigns.
CPA (Cost per acquisition): You set a target cost per conversion and the platform optimises delivery to hit that target. Requires sufficient conversion data (typically at least 30 conversions in the past 30 days) for the algorithm to optimise effectively.
Budget allocation: For businesses new to display advertising, allocate 10 to 20 per cent of your total paid advertising budget to display campaigns. Start with remarketing — it typically delivers the strongest ROI — then expand to prospecting campaigns targeting new audiences.
A minimum test budget of SGD 500 to 1,000 per month is advisable for display campaigns in Singapore. This provides enough impressions and clicks to evaluate creative performance, audience response, and conversion potential within four to six weeks.
Measuring Display Ad Performance
Measuring display advertising requires different metrics and expectations compared to search advertising. Display campaigns often influence conversions without being the last click, so relying solely on last-click attribution undervalues their contribution.
Key metrics to track:
Impressions and reach: How many people saw your ads and how frequently. Monitor frequency to avoid ad fatigue — showing the same ad to the same person too many times reduces effectiveness and annoys potential customers.
Click-through rate (CTR): The percentage of impressions that result in clicks. Display CTRs are naturally lower than search CTRs — 0.1 to 0.5 per cent is typical. Do not compare display CTR to search CTR; they measure different things.
View-through conversions: Conversions that occur after someone sees your ad but does not click it. A user might see your banner, not click, but later search for your brand name and convert. View-through tracking captures this influence.
Conversion rate: The percentage of clicks that result in a desired action. Display conversion rates are typically lower than search because the traffic is less intent-driven. Expect 0.5 to 3 per cent for most display campaigns.
Attribution modelling: Use multi-touch attribution models rather than last-click to properly credit display advertising’s role in the conversion path. Google Ads offers data-driven attribution, which uses machine learning to distribute credit across touchpoints based on actual data from your account.
Display Advertising Considerations for Singapore
Singapore’s digital landscape has specific characteristics that affect display advertising strategy.
Mobile dominance: Over 70 per cent of web traffic in Singapore comes from mobile devices. Prioritise mobile ad formats and ensure your landing pages deliver a seamless mobile experience.
High digital literacy: Singaporean internet users are among the most digitally savvy in the world. Banner blindness is real — users have learned to ignore standard ad placements. Combat this with creative designs that stand out, relevant messaging, and precise targeting that ensures your ads reach people who actually care about your offer.
Multilingual considerations: Singapore’s four official languages mean you may need to create ad variations in English, Chinese, Malay, and Tamil to reach different audience segments effectively. Test which languages perform best for your specific audience before committing to full multilingual creative production.
Brand safety: Singapore advertisers should use brand safety controls to prevent ads from appearing alongside inappropriate content. Use placement exclusions, content category exclusions, and third-party brand safety tools to protect your brand reputation.
Privacy regulations: Singapore’s Personal Data Protection Act (PDPA) affects how you collect and use data for targeting. Ensure your remarketing practices comply with PDPA requirements, including providing clear notice about data collection and obtaining appropriate consent. Your digital marketing approach must account for these regulatory requirements.
Frequently Asked Questions
What is the difference between display ads and search ads?
Search ads appear in search engine results when someone searches for specific keywords — they capture existing demand. Display ads appear on websites, apps, and social platforms while people browse — they create awareness and reach people who may not be actively searching for your product.
How much do display ads cost in Singapore?
Display CPCs in Singapore typically range from SGD 0.20 to SGD 2.00, while CPMs range from SGD 2 to SGD 15. Actual costs depend on your targeting specificity, industry, and competition. Display advertising is generally cheaper than search advertising on a per-click basis.
What size should my banner ads be?
Start with the five most common sizes: 300×250 (medium rectangle), 728×90 (leaderboard), 320×50 (mobile leaderboard), 336×280 (large rectangle), and 160×600 (wide skyscraper). These sizes cover the majority of available ad placements across the web.
Why is my display ad CTR so low?
Display CTRs are naturally lower than search CTRs because display ads interrupt browsing rather than answering a search query. A CTR of 0.1 to 0.5 per cent is normal for display campaigns. Focus on improving targeting relevance, creative quality, and messaging rather than chasing high CTRs.
Should I use static or animated banner ads?
Animated banners generally outperform static ones in terms of attention and engagement. However, they cost more to produce and some placements only support static images. Start with responsive display ads (which Google creates automatically from your assets), then test static and animated formats to see what performs best for your audience.
How do I prevent my display ads from appearing on inappropriate websites?
Use placement exclusions to block specific sites, content category exclusions to avoid entire content types (gambling, adult content, etc.), and consider third-party brand safety verification services. Regularly review your placement reports to identify and exclude poor-performing or inappropriate sites.
What is a good conversion rate for display ads?
Display conversion rates typically range from 0.5 to 3 per cent, depending on the industry and how well-targeted the campaign is. Remarketing campaigns generally convert at higher rates (1 to 5 per cent) because they target people who have already shown interest in your business.
How long should I run a display campaign before evaluating results?
Run display campaigns for a minimum of four weeks before making major decisions. This gives the platform’s algorithm time to optimise delivery and provides enough data for meaningful analysis. Shorter evaluation periods risk making decisions based on insufficient data.
Can display ads help with SEO?
Display ads do not directly improve SEO rankings. However, they can indirectly support SEO by increasing brand awareness, which leads to more branded searches. People who see your display ads may later search for your brand name on Google, generating branded search traffic that signals relevance to search engines.
Should I use Google Display Network or a programmatic platform?
For most Singapore businesses, Google Display Network is the easiest starting point due to its integration with Google Ads, extensive reach, and straightforward setup. Programmatic platforms (like DV360, The Trade Desk, or Xandr) offer more advanced targeting, cross-channel capabilities, and premium inventory but require more expertise and typically higher minimum spends.
