Google Ads remarketing: how to win back people who have already visited your website

97% of users who visit a website for the first time don’t buy anything. That’s the finding of a well-established analysis in the industry, also reported by Wordstream. Yet many companies keep spending most of their budget on bringing in new traffic, ignoring the people who have already shown interest. Google Ads remarketing exists precisely for this: to put you back in front of people who have already visited your website, viewed a product or abandoned a basket.

In this guide we explain how Google Ads remarketing works, which types exist, how to set up your lists and where it’s really worth investing.

What Google Ads remarketing is (and why it’s not just “chasing users”)

Remarketing is a system that lets you show personalised ads to people who have already interacted with your website or app. It’s not generic advertising: each remarketing campaign speaks to a precise audience segment at a precise moment in the purchase journey.

The logic is simple. Someone visited your product page but didn’t buy. Over the following days, while they’re on YouTube, checking Gmail or reading an article on a site in Google’s Display Network, they see an ad that takes them straight back to that page. It’s no coincidence: it’s Google Ads remarketing at work.

The most common mistake is thinking that remarketing is only about “chasing” users with the same ad. In reality, if it’s set up well, each remarketing campaign speaks differently to people who abandoned their basket, people who visited the home page without going further, and people who are already customers.

How Google remarketing works technically

Google remarketing rests on three elements: the tag, the lists and the campaigns.

The remarketing tag

To run any remarketing campaign you need to install the Google Ads global site tag on your website (or use Google Tag Manager). This snippet of code places an anonymous cookie in the browser of people who visit your pages, associating it with a list.

If you already use Google Analytics 4, you can link it to Google Ads and import audience segments directly, without any additional code.

Remarketing lists

Lists are the heart of Google Ads remarketing. They define who should see your ads. You can create lists based on:

• pages visited (e.g. people who viewed the product page but not the thank-you page)
• time spent on the site
• number of pages visited
• specific events (scrolls, clicks, downloads)
• CRM data uploaded manually (Customer Match)

The more precise the list, the more relevant Google Ads remarketing can be. A list of “all visitors in the last 30 days” is a starting point, but it isn’t optimisation.

Remarketing campaigns

Once you’ve created your lists, you build your remarketing campaigns by choosing where to show the ads: the Display Network, YouTube, the Search Network (RLSA) or Gmail. Each channel has different logic, different budgets and different goals.

The 5 types of Google remarketing you need to know

1. Standard remarketing (Display Network)

The most widespread format. Display remarketing ads appear on millions of Google partner websites as users browse. You can use static banners, responsive ads or manually uploaded images. It’s effective for maintaining brand awareness after the first visit.

2. Dynamic remarketing

This is where remarketing gets more sophisticated. Ads are generated automatically, showing the products or services the user actually looked at. For e-commerce sites connected to a Google Merchant Center feed, dynamic remarketing is often the format with the highest ROAS.

Google estimates that dynamic ads have significantly higher conversion rates than standard ads in remarketing campaigns.

3. RLSA (remarketing lists for search ads)

Less well known, but very powerful. RLSA lets you adjust your Search Network campaigns based on membership of a remarketing list. In practice: when a user who has already visited your website searches on Google for your own keywords, you can raise your bids, show different ads or exclude people who have already converted.

With RLSA you could, for example, increase the CPC by 30% for people who visited the product page in the last 7 days and didn’t buy: those users are worth more, and Google Ads remarketing in search lets you reflect that in your budget.

4. Video remarketing (YouTube)

If you use YouTube Ads, you can show ads to people who have already visited your website or interacted with your videos. Google Ads remarketing on YouTube is particularly useful for products with a long purchase cycle, where more touchpoints are needed before the decision.

5. Customer Match

With Customer Match you upload a list of your existing customers’ email addresses, and Google matches them with Google accounts. You can use Google Ads remarketing to reach people who are already customers for upselling, renewals or loyalty campaigns. It’s one of the most precise tools available.

How to set up a Google Ads remarketing campaign: the essential steps

Logging into Google Ads and clicking “new campaign” isn’t enough. Effective Google Ads remarketing requires a precise sequence.

1. Check the tag: make sure the global tag is installed on every page. Use Google Tag Assistant to check it’s working correctly.

2. Build your lists logically: don’t create one huge list. Segment: home page visitors, product page visitors, people who reached the basket, people who converted. Each segment deserves a different message.

3. Wait for the lists to fill up: the Display Network needs a minimum of 100 active users, Search at least 1,000. If your traffic is low, this can take weeks.

4. Create specific ads for each list: remarketing works badly when you use the same ads as your acquisition campaign. People who abandoned their basket need to see something different from people who only visited the home page.

5. Set membership durations: by default Google Ads keeps users in lists for 30 days, but you can go up to 540. For products with a short purchase cycle, keep the window tight. For consultancy services or B2B, you can extend it.

6. Use bid adjustments: remarketing lets you pay more for clicks from people who are worth more. Set bid adjustments based on list membership.

Common mistakes in remarketing campaigns

Let’s look at what goes wrong most often, even in well-organised companies.

Lists that are too broad and generic: “all visitors in the last 90 days” includes people who arrived by mistake and people who were about to buy. Effective remarketing distinguishes between these users.

No frequency cap: showing the same display ad 20 times a week doesn’t convert: it irritates. Set a reasonable frequency cap of between 3 and 7 impressions per user per week.

Not excluding converters: people who have already bought shouldn’t see ads inviting them to buy the same product. Create a “converters” list and use it as an exclusion in your standard remarketing campaigns.

The same creative across the whole funnel: a user who abandoned their basket needs a concrete incentive (free shipping, a time-limited discount). A home page visitor needs to understand who you are. Google Ads remarketing doesn’t work with a single message for everyone.

Budget and performance: what to expect from Google Ads remarketing

Remarketing tends to have lower CPMs and CPCs than prospecting campaigns, because it targets an audience that’s already warm. According to data compiled by WordStream, conversion rates for remarketing campaigns can be 2–3 times higher than for standard display campaigns.

Don’t expect Google remarketing to work on its own, though. It amplifies what’s already working: if the website doesn’t convert and the offer isn’t competitive, not even the best remarketing campaigns will deliver results.

A reasonable budget structure for those starting out: allocate 15–25% of your Google Ads budget to remarketing campaigns. As your lists grow and the data justifies it, you can increase it.

Google Ads remarketing and privacy: what’s changing with the new rules

Privacy is reshaping Google Ads remarketing. With the phasing out of third-party cookies (a process still under way, with updates from Google itself on several occasions), some traditional features will change.

Google is responding with solutions such as Privacy Sandbox, audience segments based on first-party data and an enhanced Customer Match. For anyone running Google Ads remarketing in 2025 and 2026, the direction is clear: investing in collecting first-party data (email, CRM, GA4) is the foundation for building remarketing campaigns that hold up over time.

Make sure your website complies with the GDPR: consent to tracking must be explicit and documented. Without consent, the data can’t populate your Google Ads remarketing lists.

Budget isn’t enough: you need a strategy

Google Ads remarketing isn’t an optional add-on to your advertising strategy: for many companies it’s the part of the account with the highest ROAS. Putting the right message back in front of the right people at the right time is exactly what it does.

The difference between remarketing campaigns that work and campaigns that burn budget lies in list segmentation, ad quality and consistency with the journey the user has already taken.

If you’d like an analysis of your Google Ads account and want to see where remarketing can make a difference for your business, book a call with our team.