> For the complete documentation index, see [llms.txt](https://docs.digitalturbine.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.digitalturbine.com/dt-ads-demand/ad-formats/html-ads.md).

# HTML Ads

DT Exchange HTML Ads include all display ads, such as banners, MRECs, and interstitial ads. The following sections outline the specifications for different HTML ad categories.

## Small Square Ads

| DIMENSIONS                              | CREATIVE FILE TYPE | MIME TYPES | MARKUP NOTES                                           |
| --------------------------------------- | ------------------ | ---------- | ------------------------------------------------------ |
| 300x250, 300x50[^1], 320x50, 320x10[^1] | PNG                | HTML       | Snippets of JS or HTML code only (not full documents). |

## Horizontal and Banner Ads

| DIMENSIONS                  | CREATIVE FILE TYPE | MIME TYPES | MARKUP NOTES                                                                    |
| --------------------------- | ------------------ | ---------- | ------------------------------------------------------------------------------- |
| 468x60[^1], 728x90, 480x320 | JPG/JPEG           | HTML5      | <p>Ad markup should be <code>CGI escaped</code>.<br>It should not be a URL.</p> |

## Tracking Click Events on Image Ads

The click tracking URL fires the JS click event when the user taps on the ad container (`webView`).

[^1]: This size can be passed in an array of multiple ad sizes via `banner-format` in the bid request. To view a sample bid request, see [Sample Bid Requests](/dt-ads-demand/dt-exchange-openrtb-2.5-specs/sample-bid-requests.md). To enable these sizes for your bidder, contact your demand account manager.


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