> For the complete documentation index, see [llms.txt](https://olistshops.gitbook.io/facebook/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://olistshops.gitbook.io/facebook/en/facebook-integration/pre-requisitos-do-facebook/4.-pixel.md).

# 4. Pixel

The Facebook pixel will help you understand and measure your publicity efficiency based on the customers actions on your shops store.

If you already have a pixel number for your shops store, you can use it. Otherwise, you can create a new one during the account linking.

![](https://lh3.googleusercontent.com/aZNfWrPhCCrSjKURQgW7IhIhwxmppeaBMq1Ojn6kvbKulkboW5z1gmLN0yxv0YXGWZrmvpMwMNGJqiWhXX6QZdMesb7diE9wzuqo0y_63BfKjvs2i2nQ3qLZ_cY0X-oroLC84Yb8)

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