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GlossaryDecember 23, 20252 min read

Conversions API (CAPI)

Implement Meta CAPI for accurate tracking. Captures 130% more data than Pixel alone. Now essential.

By The Ad Spend
Two women walking through a moody, cinematically lit office.

Meta's server-side tracking solution sending conversion data directly from your server to Meta, bypassing browser limitations from iOS 14 and ad blockers.

Formula

Server-to-server event tracking

Benchmark range

Event Match Quality: 7-9 with CAPI vs 3-5 Pixel-only. CAPI captures 130%+ more data than Pixel alone.

Why it matters

CAPI is now essential, not optional. Browser-based Pixel misses 30-50% of conversions due to iOS opt-outs (88-96% opt out) and ad blockers. Implement CAPI alongside Pixel for redundancy. Higher Event Match Quality = better targeting.

Where it applies

  • Meta Ads

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