| Format | GIF – JPEG – HTML5* |
| Dimensions | 994×118 px |
| Size | 50 kB max |
| Tracking | HTTPS ONLY Imps pixel: Yes Click command: Yes |
| Note | Only accepted in Total redirects |
| Total redirects | HTTPS ONLY JavaScript code accepted. The iframe tag might be requested if necessary |
| Note | The masthead format must adapt to the width of the page when browsing on a tablet and must change to 320x100px on a smartphone |
| *HTML5 | Creatives made in HTML5 must ONLY come in the total redirects |
