The vast majority of people who visit your website will leave without converting. Across industries, average conversion rates sit between 2% and 5%, which means that 95-98% of your visitors see your offer and walk away. Remarketing is how you bring them back.
Done well, remarketing is one of the most cost-effective forms of paid advertising. You are targeting people who have already expressed interest in your business – they visited your site, browsed your products, maybe even added something to their basket. These are warm prospects, and the right follow-up message at the right time can turn them into customers.
This guide covers everything you need to build and manage effective remarketing campaigns, from the technical foundations through to creative strategy, privacy considerations, and ROI measurement.
What Is Remarketing?
Remarketing (also called retargeting) is a form of online advertising that targets people who have previously interacted with your website, app, or content. When a user visits your site, a small piece of tracking code records that visit. You can then show targeted ads to that user as they browse other websites, scroll through social media, or use apps.
The fundamental premise is simple: someone who has already visited your site is far more likely to convert than a cold prospect. Remarketing keeps your brand visible and gives those warm prospects additional opportunities to take action.
How Remarketing Pixels Work
The technical foundation of remarketing is the tracking pixel – a snippet of JavaScript code placed on your website.
The Basic Mechanism
When a user visits your website, the remarketing pixel fires and places a cookie (or uses a first-party data identifier) in the user's browser. This cookie identifies the user anonymously and adds them to your remarketing audience. When that user later visits a site within the ad network (Google Display Network, Meta, etc.), the ad platform recognises the cookie and serves your ad.
Page-Level Tracking
Advanced remarketing goes beyond simple site visits. You can place specific tracking events on individual pages and actions, allowing you to build audiences based on exactly what users did on your site. Someone who viewed a product page is a different prospect than someone who added to cart, and your remarketing strategy should reflect that difference.
Conversion Tracking
Remarketing pixels also track conversions, allowing you to exclude people who have already converted (using what is known as a burn pixel) and measure the effectiveness of your campaigns accurately.
Google Ads Remarketing vs Meta Remarketing
The two largest remarketing platforms serve different purposes and reach users in different contexts.
Google Ads Remarketing
Google's remarketing capabilities span the Google Display Network (reaching over 90% of internet users across millions of websites), YouTube, Gmail, and Google Search (Remarketing Lists for Search Ads, or RLSA).
- Display remarketing: Banner and responsive ads shown across the Google Display Network
- YouTube remarketing: Video ads shown to past visitors while they watch YouTube content
- RLSA: Adjusted search ads shown to past visitors when they search on Google – allowing you to bid more aggressively for people who already know your brand
- Gmail remarketing: Ads shown in the Promotions tab of Gmail
Google's strength is reach and intent. RLSA in particular is powerful because you are targeting people who are actively searching and who have already visited your site – the combination of intent and familiarity is extremely effective.
Meta Remarketing
Meta (Facebook and Instagram) remarketing uses the Meta Pixel and Conversions API to target past visitors across Facebook, Instagram, Messenger, and the Meta Audience Network.
- Feed ads: Image and video ads in the Facebook and Instagram feeds
- Stories ads: Full-screen vertical ads in Stories
- Reels ads: Short-form video ads within the Reels feed
- Audience Network: Ads shown across third-party apps and sites
Meta's strength is targeting precision and creative flexibility. The platform's detailed user data allows for highly specific audience segmentation, and the visual nature of Facebook and Instagram makes it ideal for product-focused remarketing.
Audience Segmentation
The most common remarketing mistake is treating all past visitors the same. Effective remarketing requires segmenting your audience based on their behaviour and intent level.
Cart Abandoners
Users who added items to their basket but did not complete the purchase represent your highest-intent remarketing audience. These people were moments away from converting. Your remarketing ads should address common reasons for abandonment: unexpected costs, need for more time, comparison shopping. Consider offering an incentive (free delivery, a small discount) to tip them over the edge.
Product Page Viewers
Visitors who viewed specific product or service pages showed clear interest in particular offerings. Use dynamic remarketing to show them the exact products they viewed, along with related or complementary items. This is significantly more effective than showing generic brand ads.
Blog and Content Visitors
People who read your blog or content pages are at an earlier stage of the funnel. They are aware of the problem but may not be ready to buy. Nurture them with additional helpful content, case studies, or guides that move them closer to a purchasing decision.
Homepage Visitors Only
Visitors who only saw your homepage likely have the lowest intent. They may have landed there by accident or were just exploring. Target them with broad brand awareness messaging rather than hard sales pitches.
Time-Based Segmentation
Recency matters enormously in remarketing. A visitor from yesterday is far more likely to convert than a visitor from sixty days ago. Create audience segments based on time windows:
- 1-3 days: Highest intent. More aggressive messaging and bidding
- 4-14 days: Still warm. Reinforce value proposition and address objections
- 15-30 days: Cooling. Use softer touch – helpful content, social proof, testimonials
- 31-90 days: Cold. Brand reminders only, or exclude from campaigns entirely
Dynamic Remarketing for Ecommerce
Dynamic remarketing automatically generates personalised ads based on the specific products or services a user viewed on your site. Instead of showing a generic brand ad, you show the exact items the user was interested in – along with pricing, images, and a direct link to purchase.
Setting up dynamic remarketing requires a product feed (a structured data file containing your product catalogue) connected to your ad platform. Both Google and Meta support dynamic remarketing, and for ecommerce businesses, it is one of the highest-ROI advertising tactics available.
Key considerations for dynamic remarketing:
- Product feed quality: Ensure your feed contains high-quality images, accurate pricing, and compelling descriptions
- Template design: Choose ad templates that showcase your products attractively and include clear calls to action
- Cross-selling: Include related products alongside viewed items to increase average order value
- Stock accuracy: Nothing damages trust faster than remarketing a product that is out of stock when the user clicks through
Ad Creative Best Practices for Remarketing
Remarketing creative needs to be different from prospecting creative. You are speaking to people who already know your brand.
Acknowledge the Relationship
Your audience knows they have visited your site. Do not pretend this is a first introduction. Language like "Still thinking about it?" or "Ready to take the next step?" acknowledges the existing relationship and feels more natural than a cold pitch.
Address Objections
People did not convert for a reason. Your remarketing creative should address common objections: price concerns (highlight value or offer a promotion), trust issues (show reviews and testimonials), timing (create urgency with limited offers), or uncertainty (offer free trials, demos, or money-back guarantees).
Use Social Proof
Customer reviews, testimonials, case study results, and trust badges are particularly effective in remarketing because they address the trust gap that may have prevented the initial conversion.
Keep Creative Fresh
Ad fatigue is a real problem in remarketing. If someone sees the same ad ten times without clicking, showing it an eleventh time will not change their mind. Rotate creative regularly and test different messages, images, and formats.
Match Creative to Segment
Different audience segments need different creative. Cart abandoners should see their specific products with an incentive to return. Content visitors should see case studies or guides. Match the message to the audience's stage in the buying journey.
Frequency Capping
Frequency capping limits how many times an individual user sees your remarketing ads within a given time period. This is essential for several reasons:
- Preventing annoyance: Seeing the same ad too frequently creates negative brand associations
- Budget efficiency: After a certain number of impressions, the marginal value of additional views approaches zero
- Compliance: Excessive ad frequency can cross the line from marketing into harassment, particularly in the eyes of regulators
A reasonable starting point is 3-5 impressions per user per day for display remarketing, and 1-2 per day for video. Monitor your frequency reports and adjust based on performance data – if you see click-through rates declining as frequency increases, your cap is too high.
Burn Pixels: Excluding Converters
A burn pixel is a tracking snippet placed on your conversion confirmation page (thank you page, order confirmation, etc.). When a user reaches this page, they are automatically removed from your remarketing audience.
Burn pixels are critical for two reasons. First, showing ads to people who have already converted wastes budget. Second, it creates a poor experience – few things are more irritating than being chased around the internet by ads for something you have already purchased.
Set up burn pixels from day one. Ensure your exclusion lists are working correctly. Also consider separate exclusion rules for different conversion types if you offer multiple products or services.
Privacy Considerations
The privacy landscape has changed dramatically in recent years, and remarketing strategies must adapt accordingly.
Cookie Deprecation
Third-party cookies – the traditional backbone of remarketing – are increasingly restricted. While the timeline for full deprecation has shifted, the direction of travel is clear. Remarketing strategies that rely solely on third-party cookies are living on borrowed time.
Invest in first-party data strategies: email lists, logged-in user experiences, loyalty programmes, and server-side tracking. Platforms like Meta's Conversions API and Google's Enhanced Conversions help maintain remarketing effectiveness in a post-cookie world.
Consent Requirements
Under UK GDPR and the Privacy and Electronic Communications Regulations (PECR), you must obtain user consent before placing non-essential tracking cookies. This means your cookie consent mechanism must be properly implemented, with remarketing pixels only firing after consent is granted.
Businesses that handle consent poorly risk not only regulatory penalties but also degraded remarketing audiences (if pixels fire without consent, the data is unusable) or legal challenges.
Transparency
Be transparent with your audience about how you use their data. A clear, accessible privacy policy and a well-designed cookie consent experience build trust – the foundation of any long-term customer relationship.
Measuring Remarketing ROI
Remarketing ROI should be measured differently from prospecting campaigns because the audience is fundamentally different.
Key Metrics
- Return on ad spend (ROAS): Revenue generated divided by remarketing spend. Remarketing typically delivers higher ROAS than prospecting because the audience is warmer
- Cost per acquisition (CPA): The cost of converting a remarketed user. Compare this against your overall CPA to quantify the efficiency gain
- View-through conversions: Users who saw your remarketing ad but did not click, yet converted later. This captures the influence of remarketing beyond direct clicks
- Incremental lift: The additional conversions generated by remarketing that would not have occurred otherwise. This is the truest measure of remarketing value
Attribution Considerations
Be cautious about attributing all remarketing conversions to the remarketing campaign alone. Some of these users would have returned and converted anyway. Use holdout testing (showing ads to a segment while withholding them from a control group) to measure the true incremental impact of your remarketing efforts.
Common Remarketing Mistakes
Avoid these frequent errors that undermine remarketing performance.
Being Too Aggressive
High frequency, overly salesy creative, and relentless pursuit across every platform creates a negative experience. Remarketing should feel like a gentle reminder, not a desperate chase.
Poor Audience Segmentation
Treating all past visitors identically means your messaging is too generic to be effective for anyone. Invest the time to build detailed audience segments and tailor your approach to each one.
Ignoring Ad Fatigue
If your remarketing creative has not changed in months, your audience has tuned it out. Refresh creative regularly – at minimum every two to four weeks – and test new approaches continuously.
Not Excluding Converters
Failing to set up burn pixels means you are wasting budget on people who have already taken the action you are asking for. It also risks annoying your best customers.
Setting and Forgetting
Remarketing campaigns require ongoing optimisation. Review performance data regularly, adjust bids and budgets based on segment performance, refresh creative, and refine your audience definitions over time.
Neglecting the Landing Page
Bringing remarketed users back to the same page where they failed to convert the first time is a missed opportunity. Consider dedicated landing pages that address common objections, offer incentives, or provide additional information that may tip the balance.
Getting Started with Remarketing
If you are not yet running remarketing campaigns, here is where to begin:
- Install tracking pixels: Set up the Google Ads remarketing tag and Meta Pixel on your website, with proper consent management
- Build your audiences: Create segments based on page views, time on site, and actions taken
- Start with your warmest audience: Launch your first campaign targeting cart abandoners or high-intent page viewers
- Create tailored ad creative: Develop ads that speak to each segment's specific situation and objections
- Set frequency caps: Prevent overexposure from the start
- Implement burn pixels: Ensure converters are excluded from the outset
- Measure and optimise: Review performance weekly and refine your approach based on data
Win Back Your Lost Visitors
Every day, potential customers visit your website and leave without taking action. Remarketing gives you a second chance – and often a third, fourth, and fifth – to convert those visitors into customers.
At Dynamically, we build and manage PPC campaigns that include sophisticated remarketing strategies tailored to your business, your audience, and your goals. From pixel implementation to creative development to ongoing optimisation, we handle every aspect of remarketing so you can focus on running your business. Get in touch to discuss how remarketing can boost your conversion rates and maximise the return on your marketing investment.