Question

Given a URL to an image (and not the image itself), what’s the most efficient of getting it’s dimensions? I would like to change the height and width attributes in the image tag (<img>) if it is greater than 200×200. However, if it’s smaller than that, then I’d like to keep the size as it is. (I’m using ASP.NET/C#)

Answer 1

If you don’t want to check the properties of the image by loading it first you can do it with javascript:

<img src="image.jpg" onload="if( this.width > 200 ) this.width = 200;">