All changelog
Responsive JavaScript SDK Sizing Guide
You can size one JavaScript ad slot for every screen with new guidance for adapting dimensions to a container or device.
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Container measurement - Read the rendered slot width and pass it as
maxWidthfor a layout-aware request -
Mobile and desktop rules - Set tighter mobile bounds while leaving larger screens unbounded
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Safer measurements - Avoid zero-height slots, respect the 240 × 72 minimum, and keep resize events from triggering request loops
Read the JavaScript SDK sizing guide.