Duplicate Killer – Prevent Duplicate Form Submissions vs Repeater Fields for Elementor Forms

Duplicate Killer – Block Duplicate Form Submissions in WordPress. WooCommerce – Prevent Accidental Duplicate Orders Duplicate Killer also protects WooCommerce Classic Checkout from accidental duplicate orders. WooCommerce already disables the “Place order” button, but duplicate orders can still happen when: Checkout is slow Payment gateways lag or retry Customers refresh the page Multiple tabs are used Network requests are retried Duplicate Killer FREE adds lightweight server-side duplicate protection for WooCommerce Classic Checkout. If the same customer attempts to submit an identical order within 60 seconds, the duplicate is blocked and a validation message is shown. !!! No changes to your checkout design. No impact on performance. No additional configuration required. If your forms receive the same email address multiple times, fake leads, or repeated submissions, this plugin blocks them instantly. Choose which fields must be unique (email, phone, text) and block duplicate entries automatically — without changing your form design or user experience. Duplicate Killer works silently in the background and integrates seamlessly with popular WordPress form plugins and page builders. Cross-Form Duplicate Protection (PRO) Duplicate Killer PRO introduces Cross-Form Duplicate Protection. This feature allows duplicate detection across multiple forms on your website. For example, if a user submits the same email address in two different forms, Duplicate Killer PRO can detect the duplicate and block the second submission. This is useful when: – multiple contact forms exist across different pages – marketing forms collect the same email address – lead capture forms should only allow one submission per user – different form plugins are used on the same site This feature is available in Duplicate Killer PRO. Free: In the free version, duplicate protection can be enabled for one form per supported plugin. PRO: Duplicate Killer PRO enables multi-form protection with individual rules and messages per form. Supported Plugins Elementor Forms Contact Form 7 Formidable Forms WPForms Lite Forminator Ninja Forms Breakdance Page Builder Forms Key Features ✔ Prevent duplicate form submissions without CAPTCHA ✔ Works with existing forms – no changes required ✔ Prevent duplicate submissions by Email, Phone or Text fields ✔ Stop duplicate emails and repeated leads ✔ One global error message for all forms (Free version) ✔ Cross-Form Duplicate Protection (PRO) ✔ Detect duplicates across multiple forms ✔ Optional IP-based duplicate protection ✔ Store unique entries securely in your WordPress database ✔ Automatically store uploaded files from Contact Form 7 ✔ Lightweight, fast and easy to configure ✔ WooCommerce Classic Checkout duplicate protection ✔ Server-side fingerprint validation (Email + Cart + Total + Currency) ✔ Fixed 60-second protection window (FREE) ✔ Structured duplicate logging (ready for PRO analytics upgrade) ✔ No changes to checkout or form design Common use cases Prevent duplicate leads in contact and lead generation forms Keep CRM and email lists clean Block repeated event registrations with the same email Ninja Forms Prevent duplicate submissions by Email, Phone or Text fields Clean validation messages No form design changes required NEW: Formidable Forms Support Duplicate Killer now fully supports Formidable Forms and helps you stop duplicate form submissions in WordPress. You can prevent duplicate entries in Formidable Forms contact forms and advanced forms by enforcing unique fields such as email address, phone number, or text fields. This feature works with Formidable Forms native fields, requires no additional configuration. Does not affect form design or user experience. Elementor Forms Support Duplicate Killer fully supports Elementor Forms. You can prevent duplicate submissions in Elementor contact forms, lead forms and popups by enforcing unique values such as email or phone number. NEW in PRO version: Elementor Group Mode allows you to treat multiple forms with the same Form Name as one unified protected form — even if Elementor generates different form IDs internally. Plugin Integrations Contact Form 7 Limit submissions by Email, Phone or Text fields Custom validation message for duplicate entries Automatically store uploaded files locally Elementor Forms Prevent duplicate submissions on Elementor native forms Works with contact forms, lead forms and popups Seamless integration without modifying form structure Forminator Select unique fields (Email, Phone, Text) Warn users when a value has already been submitted WPForms Lite Prevent duplicate entries without changing form layout Clean and simple validation messages Breakdance Page Builder Forms Prevent duplicate submissions on Breakdance native forms IP-based validation for cleaner data Fully compatible with Breakdance UI Free vs Pro Free Version Protect one form (per supported plugin) Global duplicate protection rules (for the protected form) One global error message Global IP-based submission limits Unique entries per user (cookie-based) WooCommerce (FREE): – Protect Classic Checkout only – Fixed 60-second lock window – Basic duplicate detection – Stores structured logs for seamless upgrade to PRO analytics Duplicate Killer PRO Protect multiple forms Per-form duplicate protection rules Cross-Form Duplicate Protection (detect duplicates across different forms) Custom error message for each form Different IP limits per form Unique entries per user, configurable per form Designed for sites with multiple forms and different submission needs Duplicate Killer PRO is ideal for sites with multiple forms and different audiences. WooCommerce PRO adds: – Checkout Blocks (Store API) support – Configurable lock window (30–300 seconds) – Advanced fingerprint controls (phone, shipping, IP, customer ID) – Order linking (direct link to matching WooCommerce order) – Gateway breakdown (Stripe, PayPal, COD, etc.) – Trends dashboard (Last 24h, 7 days, 14 days) – CSV export for audits and support teams – Detailed analytics (top products, domains, checkout types, IPs) – Designed for real-world edge cases such as slow hosting, gateway retries, reverse proxies and unstable mobile networks. When to use Duplicate Killer Use this plugin if you receive repeated submissions with the same email, phone number or text values. If you only need basic spam protection, a CAPTCHA plugin may be enough. When should I use Duplicate Killer PRO? Use the PRO version if your site has multiple forms with different purposes — for example a contact form, a registration form and a newsletter signup — and each one needs different duplicate submission rules. Does FREE support WooCommerce Checkout Blocks? No. Checkout Blocks use a different system (Store API) and require the PRO version. What happens if I upgrade to PRO later? All WooCommerce duplicate logs stored in the FREE version are automatically used by PRO analytics. No database migration is required. Does this prevent payment gateway retries? FREE prevents accidental duplicate submissions on Classic Checkout. PRO adds enhanced idempotency handling and deeper gateway analytics.

DEMO: https://demo.add-ons.org/demo-repeater-fields/ Download Pro Version: https://add-ons.org/plugin/elementor-forms-repeater-fields/ Document: https://add-ons.org/document-elementor-foms-repeater-field/ Repeater Field For Elementor Forms is a powerful add-on that brings the much-anticipated “Repeater” functionality to Elementor Pro Forms. It allows you to create complex, multi-row data entry sections within your forms, perfect for event registrations, team sign-ups, order forms, and more. Stop creating overwhelmingly long, static forms. By allowing users to dynamically add rows as needed, you improve user experience, reduce form abandonment rates, and collect exactly the data you need—no more, no less. With a focus on performance and ease of use, this plugin integrates seamlessly with the Elementor editor, providing a native-like experience for both creators and end-users. Ideal for Group Registrations and Orders: This plugin is a game-changer for event organizers, HR departments, and store owners. With our “Send to All Emails in Repeater” feature, you can now have one person register an entire team, and every member will instantly receive their own confirmation email. Key Features Intuitive Repeater Architecture: Easily add “Repeater Start” and “Repeater End” markers to wrap any set of fields you want to make repeatable. Support for Standard Field Types: Use standard Elementor form fields inside your repeater, including text, number, email, select, checkbox, radio, and date/time. Dynamic Email Notifications: HTML Email Support: Automatically generates a clean, numbered list of all repeater entries in your confirmation emails. Send to Repeater Emails: Automatically send notification emails to every email address entered within the repeater rows. Submissions Integration: View and manage repeater data clearly directly from the native Elementor Submissions dashboard. Advanced Styling Flexibility: Fully customize the “Add Row” & “Remove Row” buttons, row titles, and icons to match your site’s design directly from the Elementor Style tab. Initial Rows & Limits Control: Set the number of rows to show by default and limit the maximum/minimum number of rows a user can add to prevent spam or enforce limits. Conditional Logic Compatibility: Works natively with Elementor Form conditional logic, allowing you to hide/show fields inside repeaters based on user input. Multi-step Form Support: Fully compatible with Elementor’s multi-step forms. Place your repeater anywhere in the form steps. Webhooks & Integrations: Repeater data is neatly formatted and plays well with Elementor’s native Webhooks, Zapier, Mailchimp, and other third-party integrations. Custom Validation: Built-in validation for numbers (min/max), telephone numbers, and time formats to ensure data integrity. Drag & Drop Interface: Easily rearrange fields within your form in the Elementor editor. Honeypot Support: Fully compatible with Elementor’s Honeypot field for spam protection. Developer Friendly: Hooks and filters available for deep customization. Lightweight & Fast: Optimized for speed, frontend performance, and minimal impact on site loading times. Use Cases Event Registrations: Allow one user to register multiple attendees, collecting name, email, and meal preferences for each. Job Applications: Let applicants add their job history, listing multiple previous employers, dates, and roles. Order Forms: Create dynamic forms where users can add multiple products or services they wish to quote or purchase. Emergency Contacts: Allow users to add as many emergency contacts as they need. Real Estate Listings: Let users submit multiple property features or rooms in a single form submission. Pro Version Features Unlock the full potential of your Elementor Forms with our Pro Version! * File Upload Support: Allow users to safely upload multiple files, images, or documents within each repeater row. * Payment Fields Support: Seamlessly integrate with Elementor’s native Stripe and PayPal fields for complex order forms. * Unlimited Limits: Remove all restrictions on minimum and maximum repeater rows. * Calculated Fields: Perform dynamic calculations based on number fields inside the repeater rows (e.g., calculating total cost). * Advanced Conditional Logic: More granular control over conditional logic across different repeater items. * Premium Support: 1-year priority support and regular updates. * 30-day Money-back Guarantee: No questions asked.