Criteo Image — 336×280 Large Rectangle ads are horizontal 6:5 still images, measured at 336×280 px, up to 0.5 MB per file, delivered as PNG, JPG, or GIF. They run in the Open Web / Retail Media — IAB-standard banner placements placement on Criteo. Use these requirements to brief designers, validate uploads, and avoid creative rejections in Criteo's ad manager.
| Dimensions | 336 × 280 px |
|---|---|
| Aspect ratios | 6:5 |
| Orientation | landscape |
| Max file size | 0.5 MB |
| File types | PNG, JPG, GIF |
Banner image must match the size of the intended banner slot. One URL redirection link per creative. Image file type: PNG, JPG or GIF. Maximum image weight: 500 KB. GIF animation maximum length: 30 seconds. Devices: Desktop, Tablet, Mobile. Service type: Managed Service or Self Service.
Official source: https://www.criteo.com/digital-ad-formats/