Improved Captcha is a spam protection module for OpenCart that generates captcha images to block automated bot attacks. Our extension will help you forget about spam through contact forms, bot registrations, and fake orders. The module operates without irritating your customers, as it creates no delays and requires no additional clicks. Configure the captcha with the required complexity and style to match your design.
The functionality allows creating captcha with customizable image dimensions, character count, and font size settings. The module supports eight captcha formats: numbers, Latin and Cyrillic characters, mathematical examples, ready-made dictionaries, and letter case configuration.
Our advanced captcha for OpenCart applies ten image distortion methods: gradient background, random noise with three levels, distortion lines, character rotation up to 45°, size variation, random offset, shadows, borders, and antialiasing.
Captcha Image Distortion Features
Image distortion - protection against automatic recognition
Character rotation - up to 45° to complicate recognition
Random noise - three intensity levels (low, medium, high)
Distortion lines - configurable count (0-20)
Random offset - chaotic character positioning
Size variation - different character sizes within one image
Shadows and borders - additional protective elements
Antialiasing - smoothing for quality display
The module allows limiting input attempts, features automatic bot IP blocking for a specified time, and manages captcha session lifetime.
The enhanced captcha module supports various TTF fonts, image generation in PNG and JPEG formats with quality control, and a module action logging system. The administrative interface is divided into four configuration categories: general parameters, appearance, security, and advanced functions.
The module is designed for OpenCart online stores that require reliable bot protection while maintaining convenience for real users. Through a flexible configuration system, the module ensures a balance between security level and customer convenience.
Extension installation instructions:
Upload the module in the admin panel in the "Extensions" : "Install".
Go to the "Modifications" section and update the cache.
Go to the "Dashboard" section and update the template cache (only for OpenCart 3).
Go to the "Extensions" : "Extensions" : choose type "Captchas" and enable the module "Improved Captcha".
Edit module. Enable the status and adjust all its options to your needs and save the settings.
Go to System : Settings: edit store : Options tab : at the very bottom, select "Improved Captcha" and specify which pages to apply it to.
Over the years of working with various OpenCart and SEO projects, we have developed five cool modules for them that provide the fastest and most noticeable result in improving search positions.
We will show you how to update OpenCart 3 to ensure its compatibility with PHP 8. There are several ways to do this: cloning files from a newer version of OpenCart, updating libraries through composer, or creating a new website.
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