Allows developers to selectively enable and disable the use of images whose sizes that are much bigger than the containers' through the Feature-Policy HTTP header or the <iframe> 'allow' attribute. This provides more control over images with unnecessarily large intrinsic size, on a per-origin basis. Use this policy to improve image loading performance. The identifier for the feature in policies is 'oversized-images'. By default, 'oversized-images' is allowed in all frames.



Status in Chromium


No active development (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

  • No signal
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Last updated on 2021-12-13