SI CAPTCHA Anti-Spam WordPress plugin

Adds Secure Image CAPTCHA anti-spam to WordPress pages for comments, login, registration, lost password, BuddyPress register, bbPress register, wpForo register, bbPress New Topic and Reply to Topic Forms, Jetpack Contact Form, and WooCommerce checkout.
In order to post comments, login, or register, users will have to pass the CAPTCHA test. This prevents spam from automated bots, adds security, and is even compatible Akismet. Compatible with Multisite Network Activate.
If you don’t like image captcha and code entry, you can uninstall this plugin and try my new plugin Fast Secure reCAPTCHA

Help Keep This Plugin Free

If you find this plugin useful to you, please consider making a small donation to help contribute to my time invested and to further development. Thanks for your kind support! – Mike Challis

Features:

• Secure Image CAPTCHA.
• Optional setting to hide the Comments CAPTCHA from logged in users.
• Enable or disable the CAPTCHA on any of the pages for comments, login, registration, lost password, BuddyPress register, bbPress register, wpForo Register, Jetpack Contact Form, and WooCommerce checkout.
• Login form – WordPress, BuddyPress, bbPress, wpForo Forum, WooCommerce, WP Multisite
• Lost Password form – WordPress, BuddyPress, bbPress, wpForo Forum, WooCommerce, WP Multisite.
• Register form – WordPress, BuddyPress, bbPress, wpForo Forum, WooCommerce, WP Multisite.
• Comment form – WordPress, WP Multisite.
• Signup new site – WP Multisite.
• Checkout form – WooCommerce.
• Jetpack Contact Form.
• bbPress New Topic, Reply to Topic Forms.
• You can disable any of the forms you don’t want CAPTCHA on.
• Style however you need with CSS.
• I18n language translation support.
• Compatible with Akismet.
• Compatible with Multisite Network Activate.
• I18n language translation support. See FAQ.

Captcha Image Support:

• Open-source free PHP CAPTCHA library by www.phpcaptcha.org is included (customized version)
• Abstract background with multi colored, angled, and transparent text
• Arched lines through text
• Refresh button to reload the captcha if you cannot read it.

Configuration

After the plugin is activated, you can configure it by selecting the SI Captcha options tab on the Admin Plugins page.

Usage

Once activated, a captcha image and captcha code entry is added to the comment and register forms. The Login form captcha is not enabled by default because it might be annoying to users. Only enable it if you are having spam problems related to bots automatically logging in.