Powerful, XHTML-compliant, server-side code highlighting for pretty much all languages
As of April 2026, Highlight Source Pro is a WordPress code plugin with 30 active installations and a 0/5 rating0. It has been downloaded 13K+ times in total. Requires WordPress 2.3+ and PHP false+. Available on WordPress.org since 2008. Last updated 17 years ago — may have compatibility concerns. Top alternative: WPCode – Insert Headers and Footers +….
Powerful, flexible, XHTML-compliant, server-side code highlighting, credits for everything
but ‘making it a plugin’ go to Jay Pipes
and GeSHi.
<div>, <ul>, <span> with class-attributes and a css-file are used for styling <pre>-tags with the lang=-attribute, thus does not interfere with any regular preformatted contents you might have<pre>-tags (if you keep the sources clean, that is)| WordPress | 2.3+ requiredTested up to 2.5 |
| PHP | false+ required |
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