What is Meta Pixel?
The Meta Pixel is code installed on a website that connects actions such as visits and purchases to Meta (Facebook and Instagram) ads.
Meta Pixel · Marketing Glossary · Updated
With the pixel, you can measure what people did after arriving from an ad, and use it for retargeting visitors and for targeting similar people.
Browser restrictions mean the pixel alone misses some data, so the server-side Conversions API is often used alongside it.
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