Midscroll Mobile Anchor



Recommended default creative dimensions

Width: 1400px (100%)
Height: 320px (100%)

Ad Viewport

Width: 100% of browser width
Height: 15% of browser height

Asset types

Non-responsive: Image (jpg, png) or Video (mp4).
Responsive: HTML5 (either Adnami hosted by sharing a zip-file or served via 3rd party tags). HTML must be minified and optimized for polite load.


For non-responsive banners, keep all essential banner content (text, logos, CTA’s etc), within a centralized 860px wide safezone. Any elements outside of this area may be cut off on smaller devices.

Format description and guidance

Midscroll Mobile Anchor is a companion banner that is served alongside a Midscroll Mobile format. It is anchored to the bottom of the window, and is shown before and after the Midscroll. While the Midscroll is visible within the viewport, the anchor banner is hidden. A “close” button is automatically added to the top right corner.

Two different anchor banners can be used before and after the Midscroll, or else the same banner can be used in both positions. The anchor banner can either be built as a non-responsive image/video, or as responsive HTML5. For more information about building responsive creative, see our building responsive creative guide.

Max total file weight

3.5 MB.
For best performance, all assets should be compressed and optimized to the lowest possible file weight.


Maximum of 5 loops.
Maximum animation time 30 seconds (may vary by publisher).

Click tags and tracking (HTML)

For Adnami hosted creatives, see our clicktags and tracking guide.
For creatives hosted using 3rd party tags, use the appropriate click methods and trackers for that provider examples.


Any audio must be user-initiated.

Supported 3rd party providers

Campaign Manager 360, Adform, Sizmek, Adjust

Supported Ad Verification

Adnami supports impression and viewability tracking from 3rd party providers, such as IAS, MOAT, DoubleVerify & Userneeds.