The mobile understitial shows up when scrolling and is, of course, integrated into the content.
max. 320 x 480px
gif, jpg, html5, streaming, swf | For Programmatic Guaranteed-Placements, please always deliver the advertising material as a redirect or physically (jpg, png or gif).
200 kB (hosted by us), max. 2MB reloaded (polite download from external sources)
The visible height is selectable: 50 px – 250 px
Platform: Mobile website, Not bookable & playable inApp
With the Understitial format, it is recommended not to animate several slides/scenes in Creative, since only a maximum 250px high section is always visible and otherwise only fractions of the advertising message reach the user.
ATTENTION: Please mark the advertising material on the left or right bottom edge with a clearly visible -w-. Please do not use the top right corner, because there is an adserver info button.