By default, Pygment It will auto discover if Pygments is installed (through command -v pygmentize). If not, it will use http://pygments.appspot.com to highlight code (but without support for: highlighted lines, line numbers and line number to start).

• Syntax-highlighted code cached as post metadata
• Admin panel to choose theme, default language and Pygments usage (local, external API or auto discover)
• Multiple themes available (github, monokai, railscasts, mustang, among others..)
• Support for hl_lines (highlighted lines), linenos (line numbers) and linenostart (line number to start) when using a local installation of Pygments
• Works with all Pygments’s supported languages (the full list can be found here)