Do you exclude width and height properties from image references in content?
  v1.0 Posted at 13/10/2015 11:45 AM by Rebecca Liu

In the case of content (unlike a site's framework files), specifying the width and height properties for images on your web pages can sometimes turn out to be more trouble than it's worth, particularly if the image is likely to be changed a few times. Adding fixed widths to your images also destroys your content on any responsive websites.

As a result, we have made a rule that content pages should not have the image dimensions specified in HTML.

We do have one exception to this rule: any HTML content that is to be sent out via email, as Outlook blocks images by default and renders them as placeholders with very lengthy alternate text. The page is invariably stretched to widths that make the contents of the message somewhat unreadable.

<img src="MyPic.gif" width="93" height="25">
Figure: Bad Example - Including the width and height properties for content images
<img src="MyPic.gif">
Figure: Good Example - Exclude width and height properties for content images

We have a program called SSW Code Auditor to check for this rule.

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