HTML Help: HTML Code Case Sensitivity

Are you supposed to code HTML tags in upper case or lower case?

Technically, HTML elements and attributes are not case sensitive, so it's a matter of personal preference.

In XHTML lower case is required. It's always possible that a future version of HTML may require lower case tags as the "powers that be" continue their quest for more consistency.

I always code tags in lower case and I recommend others do the same. It may save you a lot of updating at a later time.

Note that while attributes are not case sensitive, some attribute values ARE case sensitive. For example:

<a name="map">

...is not the same as:

 <a name="Map"> or <a name="MAP">.

This concludes the

HTML Help about HTML Code Case Sensitivity

. Based on your interest in this FAQ, you might also be interested in my 4-part Introduction to HTML, or more specifically, the Attributes and Values Tutorial.

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