Deprecated in HTML5. Do not use.

<img naturalsizeflag="">

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Attribute of
HTML Tags Guide To Adding Images To Your Web Documents
What does <img naturalsizeflag=""> do?
This attribute does nothing. It was once used by a proprietary software system.

Proprietary Attribute

The naturalsizeflag was an attribute used by a proprietary software system which is now defunct. It has never been a part of the HTML specification, and should not be used.

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Browser Support for naturalsizeflag

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