Audience Targeting
Website Custom Audiences
By the AdFlint research team · Last reviewed July 2026
A Meta custom audience built from pixel or Conversions API events, segmented by pages visited, actions taken, time on site, and a retention window.
Rules run against the events your site sends, so accuracy tracks pixel and CAPI health directly, and the retention window caps how far back membership can reach. Use them for retargeting tiers and as lookalike seeds built on high-intent actions. Browser signal loss means these lists undercount real traffic, so adding a server-side event stream materially changes their size and quality.
Website Custom Audiences compared with
The settings this gets confused with, and how to tell them apart.
- Website Custom Audiences vs Broad Targeting
- Website Custom Audiences vs Advantage+ Audience
- Website Custom Audiences vs Detailed Targeting
- Website Custom Audiences vs Interest Targeting
- Website Custom Audiences vs Lookalike Audiences
- Website Custom Audiences vs Customer List Custom Audiences
- Website Custom Audiences vs Engagement Custom Audiences
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