IAB Standards

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  • Image
  • Display

IAB Standards Native Main Image — Large 1:1 ad specs

IAB Standards Native Main Image — Large 1:1 ads are square 1:1 still images, at least 627×627 px. They run in the Native (in-feed, in-content, right rail, recommendation widget) placement on IAB Standards.

  • min 627×627 px
  • 1:1
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Visual

Minimum size
627 × 627 px
Aspect ratios
1:1

Notes & source

  • Minimum 627×627 dp (density-independent pixels)
  • Recommended file weight 90 kB
  • IAB lists no file types or hard size cap for native images: the exchange or publisher sets them
  • A "sponsored by" brand name is required with every native ad

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