CodeIgniter is a lightweight PHP framework favored by developers who want MVC structure without the overhead of larger frameworks like Laravel or Symfony — common in small business sites, internal tools, and hosting-constrained shared-server deployments. AIWebsiteDetector identifies CodeIgniter through its default `ci_session` cookie and the `csrf_test_name` hidden form field that CodeIgniter 4's CSRF protection generates by default, both of which persist across custom theming since they come from the framework's core, not the developer's templates.
Paste any URL to instantly detect whether it was built with CodeIgniter. Our engine checks 1 technical signals.
CodeIgniter is used across many industries. These are the most common website types built on this platform:
Businesses of all sizes
Fast, reliable site building with professional results
Designers and developers
Powerful tools with minimal setup
Startups
Quick launch with scalable infrastructure
Content creators
Beautiful presentation for your work
Every CodeIgniter website leaves distinctive technical fingerprints. Here's what to look for:
HTML Attributes
1 HTML pattern in the page source
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