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Editorial Team
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Asked: 2026-06-17T20:35:22+00:00

A question for the truly pedant I was looking through Chrome’s Developer Tool’s elements

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A question for the truly pedant

I was looking through Chrome’s Developer Tool’s elements tab when something caught my eye and prompted this question.

Though meaningful alt attributes on img tags are a necessary expectation for accessibility (<img src="/path/to/beauty.png"alt=”Olivia Culpo won the Miss USA 2012 contest”/>), I have seen it often advised that the alt attribute of “spacer”, or other “decorative” images should be given a blank value: <img src="/images/spacer.gif" alt=””/>

These questions are just for decorative images:

  • What happens if I declare the alt attribute, but don’t define it:
    <img src="/images/spacer.gif"alt/>
  • Of the two options, which is optimal (and why)?
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1 Answer

  1. Editorial Team

    If you run <img src="..." alt /> through the validator, it throws an error. The alt attribute needs a value, even if it is null alt="". Usually when an image doesn’t have an alt, some assistive technology announces the path to the image.

    So <img src="..." alt /> is the same as <img src="..." />. Usually the word used is decorative vs trival, but it is probably the same idea. These type of images should have a null alt.

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