Title: Duplicate Killer – Prevent Duplicate Form Submissions Author: NIA Published: October 7, 2022 Last modified: June 1, 2026 --- Search plugins ![](https://ps.w.org/duplicate-killer/assets/banner-772x250.png?rev=3451090) ![](https://ps.w.org/duplicate-killer/assets/icon-256x256.png?rev=3446305) # 󠀁[Duplicate Killer – Prevent Duplicate Form Submissions](https://wordpress.org/plugins/duplicate-killer/)󠁿 By [NIA](https://profiles.wordpress.org/wpnia/) [Download](https://downloads.wordpress.org/plugin/duplicate-killer.1.6.5.zip) * [Details](https://wordpress.org/plugins/duplicate-killer/#description) * [Reviews](https://wordpress.org/plugins/duplicate-killer/#reviews) * [Installation](https://wordpress.org/plugins/duplicate-killer/#installation) * [Development](https://wordpress.org/plugins/duplicate-killer/#developers) * [Advanced View](https://wordpress.org/plugins/duplicate-killer/advanced/) [Support](https://wordpress.org/support/plugin/duplicate-killer/) ## Statistics #### Active versions #### Downloads Per Day #### Downloads history --- ## Advanced Options This section is intended for advanced users and developers only. They are presented here for testing and educational purposes. #### Previous Versions Previous versions of plugins may not be secure or stable. They are not recommended for use on production websites. Please select a specific version to download. [Download](https://downloads.wordpress.org/plugin/duplicate-killer.zip) ## Commercial plugin This plugin is free but offers additional paid commercial upgrades or support. [View support](https://verselabwp.com/duplicate-killer/) ## Meta * Version **1.6.5** * Last updated **2 weeks ago** * Active installations **1,000+** * WordPress version ** 5.2 or higher ** * Tested up to **7.0** * PHP version ** 5.6.20 or higher ** * Tags * [contact form 7](https://wordpress.org/plugins/tags/contact-form-7/)[duplicate-orders](https://wordpress.org/plugins/tags/duplicate-orders/) [elementor forms](https://wordpress.org/plugins/tags/elementor-forms/)[woocommerce](https://wordpress.org/plugins/tags/woocommerce/) ## Ratings 5 out of 5 stars. * [ 3 5-star reviews ](https://wordpress.org/support/plugin/duplicate-killer/reviews/?filter=5) * [ 0 4-star reviews ](https://wordpress.org/support/plugin/duplicate-killer/reviews/?filter=4) * [ 0 3-star reviews ](https://wordpress.org/support/plugin/duplicate-killer/reviews/?filter=3) * [ 0 2-star reviews ](https://wordpress.org/support/plugin/duplicate-killer/reviews/?filter=2) * [ 0 1-star reviews ](https://wordpress.org/support/plugin/duplicate-killer/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/duplicate-killer/reviews/#new-post) [See all reviews](https://wordpress.org/support/plugin/duplicate-killer/reviews/) ## Support Got something to say? Need help? [View support forum](https://wordpress.org/support/plugin/duplicate-killer/) ## Donate Would you like to support the advancement of this plugin? [ Donate to this plugin ](https://www.paypal.com/paypalme/wpnia) ## Contributors * [ NIA ](https://profiles.wordpress.org/wpnia/)