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How to set up Facebook event deduplication in Google Tag Manager
Using Facebook server-side tracking (Facebook Conversions API) is getting more popular due to its ability to prevent tracking pixel blocking by ITPs and AdBlockers. Another massive benefit of Facebook conversion API is that it increases FB cookie lifetime. If you haven’t yet implemented FB Conversions API on your site, follow this guide. In this article, I will describe how to set up Facebook events deduplication if you are using both browser and server tracking methods for your site.
By Ira HolubovskaSep 19, 2025