Outbrain High Impact Display ads are vertical 1:1.3 still images, measured at 1200×1560 px, up to 2.5 MB per file, delivered as PNG, JPG, or MP4. They run in the High-Impact Display — Smartfeed large-format mobile takeover (programmatic) placement on Outbrain. Use these requirements to brief designers, validate uploads, and avoid creative rejections in Outbrain's ad manager.
| Dimensions | 1200 × 1560 px |
|---|---|
| Aspect ratios | 1:1.3, 1:1 |
| Orientation | portrait |
| Max file size | 2.5 MB |
| File types | PNG, JPG, MP4 |
File type: PNG, JPG or MP4. Main image/video weight up to 2.5 MB. Main image/video ratio: 1:1.3 (recommended 1200×1560) or 1:1 (recommended 1200×1200). Additional assets — Brand logo: 1:1 ratio (250×250 recommended); Brand name: 25 characters; Title: 30 characters; Description: 90 characters; CTA: 15 characters. Variations available: Native Image, Native Video, Social Image, Social Video, Carousel, Zoom, Panorama. Outbrain's team builds the selected variation in Outbrain Studio; advertisers can also serve their own display experiences via DSP using HTML5 ad tags or 300×600 images. Devices: mobile only.
Official source: https://www.outbrain.com/help/ads-specs/#native-image-2