Code · Vendor site 2026-10-04
CodeIgniter is a lightweight PHP web application framework aimed at developers who want a small footprint toolkit for full-featured apps. Version 4 ships with MVC-friendly structure, strong security defaults, clear documentation, and performance-oriented core libraries.
PHP developers building web applications who prefer a compact framework with optional MVC patterns and minimal configuration.
Homepage notes CodeIgniter 4 is about 1.1MB download plus separate user guide assets; you host and maintain your own deployments.
CodeIgniter 4 targets developers who need a simple, fast PHP framework with security features and extensive manuals rather than heavy mandatory architecture.
What it can do
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| Footprint | Homepage states CodeIgniter 4 is a 1.1MB download with an additional user guide download. | Facts sourced | 2026-10-04 |
| Security | Marketing copy highlights built-in CSRF and XSS protections plus context-sensitive escaping and CSP in version 4. | Facts sourced | 2026-10-04 |
| Documentation | Site points to a user guide with tutorials, how-to guides, and component reference documentation. | Facts sourced | 2026-10-04 |
Understand the total cost
Free
Free
Framework downloads and documentation are open source under the project site with no paid tier advertised on the homepage.
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Explore toolThe practical questions
CodeIgniter is a lightweight PHP web application framework aimed at developers who want a small footprint toolkit for full-featured apps. Version 4 ships with MVC-friendly structure, strong security defaults, clear documentation, and performance-oriented core libraries.
Framework downloads and documentation are open source under the project site with no paid tier advertised on the homepage.. This record lists ongoing free access; check the plan limits before starting.
No paid monthly price is listed; this record treats the product as free to start. See the plan cards for entitlements, billing commitments and seat minimums.
Not confirmed. API access and subscription access may have different terms; consult the linked sources.
Homepage notes CodeIgniter 4 is about 1.1MB download plus separate user guide assets; you host and maintain your own deployments.
No retained pricing changes yet. A current price alone does not establish a historical trend.
Reviewed vendor source
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