There are a few possible causes of duplicate pixel events in Shopify. Here are some of the most common reasons:
Multiple tracking codes installed: If you have multiple tracking codes installed on your website or in your Shopify theme, this can cause duplicate pixel events. Make sure you only have one instance of each tracking code installed.
Tag firing multiple times: If your tag is firing multiple times on a page (for example, because it's embedded in multiple elements), this can also cause duplicate pixel events. You can use a tag manager like Google Tag Manager to make sure your tags are firing only once per page.
Page refreshes or multiple clicks: If a user refreshes the page or clicks the same button or link multiple times, this can cause the pixel event to fire more than once.
Custom code or apps: Custom code or third-party apps installed on your Shopify store can sometimes interfere with your pixel tracking and cause duplicate events.
To prevent duplicate pixel events in Shopify, you can take the following steps:
Make sure you only have one instance of each tracking code installed.
Use a tag manager to manage your tags and ensure they're firing only once per page.
Add code to prevent duplicate events from firing when a page is refreshed or when a user clicks the same button or link multiple times.
Review any custom code or third-party apps you have installed to make sure they're not interfering with your pixel tracking.