Inverted Checkbox Antispam
Simple spam protection using an inverted checkbox. Compatible with Contact Form 7 and custom HTML forms.
Maintenance 38/100230d since update
Active installs
0
Downloads
518
Reviews
0
Age
0.6y
Tagscontact form 7antispamspam protectioncheckbox
Plugin info
Total downloads: 518
Active installs: 0
Total reviews: 0
Average rating: 0
Support threads opened: 0
Support threads resolved: 0 (0%)
Available in: 1 language(s)
Contributors: 1
Last updated: 5/14/2025 (230 days ago)
Added to WordPress: 5/14/2025 (0 years old)
Minimum WordPress version: 5.0
Tested up to WordPress version: 6.8.3
Minimum PHP version: 7.2
Maintenance & Compatibility
Maintenance score
Stale • Last updated 230 days ago
38/100
Is Inverted Checkbox Antispam abandoned?
Likely maintained (last update 230 days ago).
Compatibility
Requires WordPress: 5.0
Tested up to: 6.8.3
Requires PHP: 7.2
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Description
This plugin adds a hidden “inverted” checkbox to your forms to prevent bots from submitting them.
- Adds support for Contact Form 7 via shortcode
[ica_checkbox] - Adds JavaScript-based hidden checkbox to regular forms in the footer
- Blocks form submission if the checkbox is unchecked or missing (typical behavior for bots)
Installation
- Upload the plugin files to the
/wp-content/plugins/inverted-checkbox-antispamdirectory, or install the plugin through the WordPress plugins screen directly. - Activate the plugin through the ‘Plugins’ screen in WordPress
- Go to ‘Settings’ ‘Inverted Checkbox Antispam’ to enable protection for CF7 or regular forms.
- If using CF7, add
[ica_checkbox]inside your form template.
Frequently Asked Questions
It’s a hidden checkbox that must remain checked. Bots often uncheck all checkboxes — which will fail the validation.
No. The checkbox is hidden using CSS/JS and is not visible or interactable for humans.
Yes. It works with any standard HTML forms.
Review feed
No reviews available
Screenshots
No screenshots available
Changelog
1.0
- Initial release
- CF7 and standard form support
- Admin options page
- Safe variable handling