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What are retargeting ads, and how do they work?

Short answer

Retargeting ads work by tagging visitors to your website, then showing them your ads later on other sites, apps, YouTube or social media. A tag or pixel adds each visitor to an audience list. You choose which lists see which ads. The goal is to bring back people who showed interest but did not act.

In this answer
  1. 01The pieces behind it
  2. 02Build lists by intent
  3. 03Lists worth building first
  4. 04Privacy rules shape what works

The pieces behind it

PieceGoogleMeta
Tracking codeGoogle tagMeta Pixel
Audience listYour data segmentsWebsite custom audiences
Longest window540 days180 days for most events
Where ads showDisplay, YouTube, Gmail, SearchFacebook, Instagram, Messenger

Build lists by intent

Not every visitor is equal. Someone who opened your pricing page or started a form is closer to buying than someone who read a blog post. Build separate lists, so warmer visitors get stronger offers and higher bids.

Lists worth building first

  • Service page visitors in the last 30 days
  • Form starters who did not submit
  • Pricing or booking page visitors
  • Video viewers who watched most of a video

Our rule. Cap how often people see your ads and exclude anyone who already converted. Change the creative every few weeks. Seeing the same ad too often annoys people and wastes money.

Privacy rules shape what works

Browsers and phones limit tracking more each year, so lists shrink. Consent banners in some regions also keep people off your lists. Customer lists you upload, from people who gave you their details, help fill the gap.

Good example. A pool builder retargets people who viewed its pricing page with a video tour of finished pools and a design call offer.

Bad example. A pool builder shows the same banner to everyone who visited, including job seekers who read the careers page.

Read how long a remarketing audience should last. Our PPC management builds lists by intent.

Keep reading

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