IAB Standards

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  • Image
  • Display

IAB Standards Mobile Phone Interstitial ad specs

IAB Standards Mobile Phone Interstitial ads are still images, up to 0.3 MB per file, delivered as JPG, PNG, GIF, or HTML5. They run in the Full screen between content (mobile) placement on IAB Standards.

  • 307 KB
Test a creative

Visual

Max file size
307 KB
File types
JPG, PNG, GIF, HTML5

Notes & source

  • Build at 640×1136, 750×1334 or 1080×1920
  • Initial load up to 300 kB, subload up to 600 kB
  • IAB defines an interstitial as an ad between pages of content: it must not overlay content the user is already engaging with
  • Max file size is the initial-load k-weight: IAB applies the initial load limit to static image ads and backup images
  • Weights are gzipped and count every file the ad requests before the page load event
  • Subload starts after it, and user-initiated loads are unlimited
  • At most 10 file requests during initial load
  • Exempt shared libraries add up to 50 kB
  • Ads stay muted unless the user starts audio, and must be clearly distinguishable from content (a border is the usual way)
  • On 3G or slower connections IAB asks for file weights 30% below these limits

Official source · checked not yet

Official source · checked not yet

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