Ad Specifications

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Rich enabled expandable. Mobile web only

Available art sizes:

  • 320x50
  • 300x250

The format has 3 unique states (intro, collapsed, expanded). The unit can resize to any of those states at anytime. 

Spec Classification: 
Rich Media
Spec Placement: 
Huffington Post
File Type: 


Total File Size: 
400 KB
Max Initial Load File Size: 
100 KB
Host Initiated Sub-Load File Size: 
300 KB
Max Animation Time: 
15 seconds
Backup Image Submission Guidelines: 
Tag must always deliver either a primary experience or acceptable backup for instances when the user's browser does not support creative functionality (e.g. Flash, HTML5, JavaScript).
1x1 Black Border Required: 
Creatives without borders must have high contrast background color that does not mimic the background color of the page or app
Z-Index Guidelines: 
Close Button Requirements: 
Required in upper right corner of expanded panel
Third Party Serving: 


Third Party Tracking: 
Submission Guidelines: 

10-15 business days lead time for creatives

Key Creative Guidelines: 
  • The full screen state displays the Close button, which resizes the add down to the collapsed state. 
  • Recommended sizes for the intro, collapsed, and expanded states:
    • Intro height - 120px
    • Collapsed height - 50px
    • Expanded height - 416px


Supported Countries: