IAB Standards Leaderboard ads are horizontal 728:90 still images, measured at 728×90 px, up to 0.2 MB per file, delivered as JPG, PNG, GIF, or HTML. They run in the Above the fold / Header placement on IAB Standards. Use these requirements to brief designers, validate uploads, and avoid creative rejections in IAB Standards's ad manager.
| Dimensions | 728 × 90 px |
|---|---|
| Aspect ratios | 728:90 |
| Orientation | landscape |
| Max file size | 0.2 MB |
| File types | JPG, PNG, GIF, HTML |
Core IAB fixed-size display unit. Maximum initial file load 200 KB for standard ads, 300 KB for rich media. HTML5 creative must be SSL-compliant.
Official source: https://iabtechlab.com/standards/ad-portfolio/