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Pixel files are versatile and can be utilised across various digital marketing channels, including websites, emails and advertisements. They enable tracking and data collection without significantly impacting the user experience, as they are generally invisible to the visitor.

Understand Web Pixel Source with a Use Case

For example, a FinTech company can use web pixel files to track user interactions on their website, emails, and advertisements. The company can gather valuable data on user behaviour, such as clicks, form submissions and page visits by embedding pixel codes within these digital assets. This data can be used to analyse user engagement, optimise marketing campaigns and personalise financial product offerings, ultimately improving the user experience and increasing customer satisfaction in a non-intrusive manner. Note that the Pixel URL hits the Zeotap APIs with the event-related information and is recorded based on the provisioned write_key.

Understand the Differences Between Web Image Pixel, App Image Pixel and iFrame

The following table explains the difference between web image pixel, app image pixel and iFrame:
ACTIONWEB IMAGE PIXELAPP IMAGE PIXELIFRAME
How does Cookie sync work?The Web Image Pixel can perform only one cookie sync at a time. Thus, if you have five preferred partners, then all such cookie syncs require the pixel to be fired five times. For example, if there are five different events of a customer, then every event triggers cookie sync with a preferred partner.The iFrame tag responds with multiple image tags, each of which is cookie sync with the platforms of your choice.
How does user identification happen?The Web Image Pixel relies on the Zeotap third-party cookie primarily for user identification. Additionally, you may send your own identifiers.The App Image Pixel relies on the MAID that you send in the pixel. Therefore, Maid is mandatory in the App image pixel in addition to any other identifiers that you may send in the pixel.
Note:For more information about how to create a Pixel or iFrame Source, refer here.
Last modified on February 26, 2026