XHTML is just a stricter form of HTML. If you were using well-formed HTML you shouldn't have any problems converting to XHTML. These tips will help you get started using XHTML. For more information on using XHTML check out the W3 Schools XHTML Tutorial at http://w3schools.com/xhtml/default.asp, or use the W3C Markup Validator at http://validator.w3.org/ to validate your web pages.

Use lower-case tags

<p>this is correct</p>
NOT
<P>this is incorrect</P>

Close all tags

<p>this paragraph has been properly closed</p>
NOT
<p>this is incorrect (no closing tag)

Add a / to all tags that aren't explicitly closed:

<br /> NOT <br>
<hr /> NOT <hr>
<img src="/img/aoklib.png" /> NOT <img src="/img/aoklib.png">

Properly nest all tags

<p><strong>this is a paragraph with bold text</strong></p>
NOT
<strong><p>this paragraph is incorrect</strong></p>

All attribute names must be in lower case

<table width="100%"> NOT <table WIDTH="100%">

All attribute values must be in quotes

<table width="100%"> NOT <table width=100%>

Browser not supported