Back to plugin directory
#3534 rankedTier B

Duplicate Killer – Prevent Duplicate Form Submissions

By NIA

View on WordPress.org
Active installs1K+
WP Rank score45.2
Rating5.0 / 5
Reviews3
Version1.7.0
Last updatedSep 8, 2026
OverviewInstall trendCompatibilitySupport

Install Trend

Based on the last 15 days of WordPress.org download stats.

765 downloads (15d)
09-0609-0709-0809-0909-1009-1109-1209-1309-1409-1509-1609-1709-1809-19
Duplicate Killer – Prevent Duplicate Form Submissions

Compatibility

Requires WordPress5.3
Tested up to7.1.1
Requires PHP5.6.20
AddedOct 7, 2022

Similar Plugins

WPGSI: Spreadsheet Integration

2K+⭐ 4.8

Smart Phone Field For WPForms, Contact Form 7, Fluent Forms, Elementor Forms, WooCommerce, Formidable Forms, Ninja Forms

1K+⭐ 5.0

TextMe SMS

500⭐ 4.0

Math Captcha for Contact Form 7

300⭐ 5.0

Mailercloud – Integrate webforms and synchronize website contacts

100⭐ 4.0

CF7 Woo Product Registration

90⭐ 5.0

Notify.Events – Ultimate notifications

80⭐ 5.0

EntryDashboard – Database Addon & Sync for WPForms, CF7, Elementor & More

40⭐ 5.0

TagSyncer – Free Google Tag Manager Plugin for WordPress

40⭐ 5.0

Business Messaging for WbizTool

40⭐ 0.0

Centous Integration for MailerLite with Contact Form 7, WPForms, Elementor Forms, and Formidable Forms

30⭐ 0.0

Firmafy Legal eSignature

30⭐ 0.0