Which ad format should a retailer use to showcase different style and color combinations of a shoe line and gather pixel information?

The Carousel ad format is the most effective choice for a retailer looking to showcase different style and color combinations of a shoe line while also gathering pixel information. This format allows for multiple images or videos to be displayed in a single ad, enabling the retailer to highlight various designs, colors, and styles in an interactive way. Each card in the carousel can link to different product pages, which not only enhances user engagement but also provides insights into consumer preferences and behaviors through pixel tracking.

Moreover, the ability to swipe through different images or videos encourages users to interact with the ad more deeply, increasing the likelihood of clicks and conversions. This interactivity is vital for a retail environment where visual appeal significantly influences consumer decisions, making the carousel format particularly advantageous for promoting a diverse product line like shoes.

In contrast, the other formats, while effective in their own right, do not offer the same level of interactivity or the ability to display multiple variants in a single ad unit. A single image provides only one view, video may convey more about the product but not showcase variations effectively, and collection ads are typically better for offering a category rather than highlighting many options simultaneously. Therefore, the carousel format aligns perfectly with the objectives of presenting various styles and colors while collecting useful data