Framework with a small footprint

CodeIgniter 4 is a 1.1MB download, plus 1.6MB for the user guide (epub).

Exceptional performance

CodeIgniter consistently outperforms most of its competitors.

Simple solutions over complexity

CodeIgniter encourages MVC, but does not force it on you.

Strong Security

We take security seriously, with built-in protection against CSRF and XSS attacks. Version 4 adds context-sensitive escaping and CSP

Clear documentation

The User Guide contains an introduction, tutorial, a number of "how to" guides, and then reference documentation for the components that make up the framework.

Nearly zero configuration

Almost everything is set in CodeIgniter. Just connect your database!