Duplicate Killer – Prevent Duplicate Form Submissions

1.5.2

• New: WooCommerce Classic Checkout duplicate order protection (FREE).
• Prevent accidental duplicate orders within a 60-second lock window.
• Structured duplicate logging added for seamless upgrade to PRO analytics.
• Compatibility notice for Checkout Blocks (PRO required).
• Internal improvements for WooCommerce validation flow.
• Minor admin UI refinements.

1.5.1

• Minor fix for Elementor “Show Forms” integration.
• Added new PRO feature: Enable Group Mode (Elementor).
• Group Mode allows treating Elementor forms with the same Form Name as a single form across multiple pages.
• Improved Elementor compatibility and stability.

1.5.0

• New milestone system: track total duplicates blocked.
• Admin insights: see how many duplicates Duplicate Killer stopped.
• Smart review prompts at key protection milestones.
• Internal improvements and stability fixes.

1.4.9

• Improved security and data validation.
• Better compatibility with latest WordPress versions.
• Cleaner and more stable file handling for uploaded files.
• Improved admin performance and script loading.
• Translation system aligned with WordPress standards.
• General code cleanup and stability improvements.

1.4.8

• Updated: Free vs PRO structure updated to reflect the long-term direction of the plugin.
• Added: Visual guidance in the admin area for multi-form protection.
• Improved: Minor improvements to cookie-based duplicate detection.

1.4.7

• New: Full Ninja Forms support – block duplicate submissions before entries are saved.
• Major upgrade: Cookie engine fully rewritten for better performance and reliability.
• Improved compatibility with cache plugins and strict Content Security Policies (CSP).
• Smarter cookie-based uniqueness logic, applied only when enabled per form.
• Internal optimizations preparing support for additional form plugins.

1.4.6

• New: Formidable Forms support – stop duplicate form submissions by email or other fields.
• Prevent duplicate entries by email, phone, or text fields in Formidable Forms.
• Improved compatibility and stability across supported form plugins.

1.4.5

• New feature: Duplicate protection for Elementor Forms

1.4.4

• Bug fix: Undefined array key Forminator

1.4.3

• Bug: Problem with table creation

1.4.2

• Support Number field on Forminator

1.4.1

• Tested up to WordPress 6.9

1.4.0

• Feature: Added support for forms built with Breakdance Page Builder.

1.3.1

• Feature: Automatically store uploaded files from the form (CF7) on your server

1.3.0

• Tested up to 6.8.1
• Feature: Restrict form entries based on IP address

1.2.3

• Feature: Store CF7 files submitted

1.2.2

• Bug: Problem with table creation
• Feature: Add form date submission

1.2.1

• Feature: Store CF7/Forminator/WPForms submissions to your WordPress database
• Tested up to 6.7.2 WordPress

1.2.0

• Bug: Fixed – Custom HTML in CF7 form – issue with detection

1.1.9

• Bug: Fixed only first 3 forms are showing in the “WPForms forms list”

1.1.7

• Bug: Fixed style sheet.

1.1.6

• Bug: Prevent empty values from being detected as duplicate entries.

1.1.5

• Interface to manage the saved values in your WordPress database.

1.1.4

• Duplicate Killer will prevent the entries from being added into CFDB7(Contact Form 7 Database Addon) plugin.
• Tested up to 6.4.1 WordPress’

1.1.3

• Fixed PHP Warning Undefined array key at CF7 function
• Tested up to 6.3.1 WordPress’

1.1.2

• Tested up to 6.1.1 WordPress’

1.1.1

• Fix bug at feature ‘Unique entries per user’

1.1.0

• New feature – Unique entries per user
• New style navigation for better UX

1.0

• First public release