Securimage in the Wild

Securimage has been around since 2008. Real estate contact forms, university guestbooks, government registration pages — if it ran PHP and needed a CAPTCHA, there's a decent chance it used Securimage.

A Library Built on Real Use Cases

Most of Securimage's features came from developers building production sites :

• The refresh link (requested by a real estate site)
• Random background images (community-contributed)
• Audio CAPTCHA for accessibility
• Word-list mode for readable codes
• The Securimage-WP WordPress plugin

Add Securimage to Your Project

Securimage runs on PHP 7.2 through 8.x and is maintained on GitHub.

• Download Securimage from GitHub (GPL-licensed)
• Quickstart Guide — up and ru nning in minutes
• Customization Guide — match your site's design

Modern Alternatives

A lot has changed since 2008. You have better options now for most use cases :

• CAPTCHA Alternatives Guide — Securimag e, Turnstile, reCAPTCHA v3, hCaptcha, and honeypot compared
• Cloudflare Turnstile vs reCAP TCHA — the two leading invisible options, head to head
• Honeypot Technique — zero user fri ction, surprisingly effective