Meta Ads measurement
Meta Pixel vs Conversions API: what to use
Pixel and CAPI are not mutually exclusive. They usually send the same business event through different channels and complement each other.
01
How Meta Pixel works
Pixel runs in the visitor browser and records page actions. It is easy to inspect, but some signals can be blocked by browser settings, extensions and privacy restrictions.
02
How Conversions API works
Conversions API sends events from the website server, CMS, CRM or another system. It depends less on the browser but requires careful implementation and data quality checks.
03
Why both channels are usually useful
Browser and server delivery provide a more complete view. Meta matches both versions for reporting and optimization.
- Pixel records browser interactions
- CAPI complements limited or missing signals
- Both versions need aligned events and event IDs
- Only necessary and permitted data should be sent
04
What event deduplication means
Deduplication prevents one action from being counted twice. A browser/server pair uses the same event_name and event_id.
After setup, verify Test Events, diagnostics, match quality and real reporting over several days.