# 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 | | | --------------- | ----------------------------------------------------------------------------------------------------------- | | 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 --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.adnuntius.com/adnuntius-high-impact/guidelines-for-high-impact-creatives.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.