> For the complete documentation index, see [llms.txt](https://docs.adnuntius.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.adnuntius.com/adnuntius-high-impact/guidelines-for-high-impact-creatives.md).

# Guidelines for High impact creatives

Below you will find recommendations for file sizes that will allow high impact to be served through Adnuntius ad server.

### Asset requirements

| File types      | <ul><li>JPG</li><li>GIF</li><li>PNG</li><li>MP4</li><li>Mov</li><li>HTML</li><li>Third party tags</li></ul> |
| --------------- | ----------------------------------------------------------------------------------------------------------- |
| Dimensions      | No larger than 2000 × 2000 px                                                                               |
| Destination URL | Required for HTML and third party tags                                                                      |

Some third party tags might require Macros to allow us to count clicks, read more [here](/other-useful-information/macros-for-click-tracker.md).

### File sizes

| File Type               | Maximum File Size      |
| ----------------------- | ---------------------- |
| Video                   | 100 Mb                 |
| Image                   | 10 Mb                  |
| Third Party tags / HMTL | max 100Kb initial load |

### Display Sizes

We currently offer two variants of high impact format

* 1920 x 1080 px for horizontal devices
* 1080 x 1920 px for vertical devices, eg. Mobile