Meta Pixel
By the AdFlint research team · Last reviewed July 2026
A JavaScript snippet on your site that reports page views and standard events to Meta from the visitor's browser.
The pixel loads in the browser, fires standard events like ViewContent and Purchase, and drops the fbp cookie that ties later activity to the same person. You install it to build website custom audiences and to give delivery something to optimize toward. Browser-side collection is lossy, since ad blockers, tracking prevention, and consent refusals remove events, so the pixel is expected to run alongside the Conversions API rather than alone.
Meta Pixel compared with
The settings this gets confused with, and how to tell them apart.
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