Criteo Rich Media — Scroll ads are 1:1 still images, up to 50 MB per file, delivered as PNG or JPG. They run in the Open Web / Retail Media — Rich Media Interactive (Managed) placement on Criteo. Use these requirements to brief designers, validate uploads, and avoid creative rejections in Criteo's ad manager.
| Aspect ratios | 1:1, 2:3, 1.91:1 |
|---|---|
| Orientation | any |
| Max file size | 50 MB |
| File types | PNG, JPG |
Required assets: HD logo, brand book, branding images and/or video, URL redirection link and product catalog (when using product recommendations). Image aspect ratios: 1:1, 2:3, 1.91:1. Image file type: PNG or JPG. Max image weight: 50 MB. Min 3 images per banner size. Devices: Desktop, Tablet, Mobile. Service type: Managed Service only.
Official source: https://www.criteo.com/digital-ad-formats/