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.
Detect CodeIgniter Websites — Free Tool
Enter any URL to check if it was built with CodeIgniter. Instant results, no account required.
How we detect CodeIgniter — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
How to Detect CodeIgniter Websites
HTML Patterns
1 patterns
Cookies
1 patterns
1. Check the Page Source
Open the website in your browser, right-click, and select "View Page Source". Search for codeigniter-specific patterns in the HTML.
4. Use AI Website Detector (Easiest)
Our automated scanner checks all these signals at once and gives you an instant confidence score. Just enter any URL above.
Frequently Asked Questions
Is this website built with CodeIgniter?
You can detect if any website was built with CodeIgniter by using our free scanner above. Just enter the URL and we'll analyze HTML patterns, JavaScript files, CDN domains, and HTTP headers to determine if CodeIgniter was used — with a confidence score.
How to detect if a website was built with CodeIgniter?
There are several ways to detect CodeIgniter: (1) View the page source and look for CodeIgniter-specific class names or script URLs, (2) Check the Network tab in DevTools for requests to CodeIgniter CDN domains, (3) Use our free tool — we check 1 detection signals automatically.
What websites are built with CodeIgniter?
CodeIgniter is used by thousands of websites worldwide. Our scanner has detected many CodeIgniter-built sites across different industries. You can scan any URL to check if it uses CodeIgniter.
How accurate is the CodeIgniter detection?
Our CodeIgniter detection engine checks 1 unique fingerprint signals, achieving high confidence results. We score each match and return a confidence percentage so you know how certain the detection is.
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Detection Info
- Category
- PHP Framework
- Signals Used
- 1 patterns
- Accuracy
- High
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