Outbrain App Install ads are square 1:1 still images, measured at 1200×1200 px, up to 2.5 MB per file, delivered as JPG or PNG. They run in the Native — In the Feed, mobile only (managed only) placement on Outbrain. Use these requirements to brief designers, validate uploads, and avoid creative rejections in Outbrain's ad manager.
| Dimensions | 1200 × 1200 px |
|---|---|
| Aspect ratios | 1:1 |
| Orientation | square |
| Max file size | 2.5 MB |
| File types | JPG, PNG |
Image: JPG or PNG up to 1200×1200 in 1:1 ratio (display size 300×300). Main image weight up to 2.5 MB; GIF variant up to 12 MB. Title up to 100 characters. Brand name up to 50 characters. Brand logo: 1:1 ratio, min 40×40, max 400×400. CTA selected from a predefined list (10 languages supported). Optional App Store average rating supplied via Android + iOS app product IDs. Best for performance. Devices: mobile.
Official source: https://www.outbrain.com/help/ads-specs/#app-install