What are Meta Pixel and Conversions API?
Meta Pixel collects browser events, while Conversions API sends server-side events to improve signal resilience.
Direct answer
Pixel and CAPI should work together with deduplication so Meta receives cleaner event signals without double-counting conversions.
Why this matters
Stronger event quality helps optimization, reporting, and audience building when browser signals are limited.
What to check
Use this term as an operating checkpoint, not just a glossary definition.
- Send matching event_id for deduplication.
- Prioritize key ecommerce events: ViewContent, AddToCart, InitiateCheckout, Purchase.
- Check Event Match Quality and diagnostics after changes.
Common mistake
Adding CAPI without deduplication can make reported performance look better while data quality gets worse.
FAQ
Do I still need Pixel if I use CAPI?
Usually yes. Pixel and CAPI provide complementary browser and server signals.
What is event deduplication?
Deduplication lets Meta recognize browser and server copies of the same event by using identifiers such as event_id.
Does CAPI guarantee better ROAS?
No. It improves signal quality, but offer, creative, targeting, product economics, and budget discipline still decide outcomes.