Duplicate Killer – Prevent Duplicate Form Submissions
5★ (3 ratings) · Current rank #6119
Active installs
1K+
0% of tracked installs
Rank
#6119
Peak #6119
Downloads / day
—
Downloads (7d)
—
All-time downloads
28.2K
Days tracked
2
1 day▲ 4
7 days—
30 days—
90 days—
Highlights · computed from our daily tracking data
- Duplicate Killer – Prevent Duplicate Form Submissions currently ranks #6119 in the WordPress.org popular plugins list.
- The latest release, v1.6.9, shipped on Aug 4, 2026 (3 days ago) — release #34 since the plugin joined the directory in 2022.
Ranking history
Active installs
Downloads per day
Details
| Author | NIA |
|---|---|
| Current version | 1.6.9 |
| Versions released | 34 |
| Last updated | 2026-08-04 |
| Added to directory | 2022-10-07 |
| Requires WordPress | 5.3+ |
| Requires PHP | 5.6.20+ |
| First tracked here | 2026-08-06 |
Description
Block duplicate form submissions by validating unique email, phone and text fields without CAPTCHA.
Frequently asked questions
Is Duplicate Killer – Prevent Duplicate Form Submissions a free plugin?
Yes — Duplicate Killer – Prevent Duplicate Form Submissions is a free, open-source (GPL) plugin distributed through the official WordPress.org directory.
How many websites use Duplicate Killer – Prevent Duplicate Form Submissions?
WordPress.org reports 1K+ active installs.
How popular is Duplicate Killer – Prevent Duplicate Form Submissions?
As of August 7, 2026, Duplicate Killer – Prevent Duplicate Form Submissions ranks #6119 in the WordPress.org popular plugins list.
When was Duplicate Killer – Prevent Duplicate Form Submissions last updated?
Duplicate Killer – Prevent Duplicate Form Submissions was last updated on August 4, 2026 (version 1.6.9). It has shipped 34 releases in total.
Who makes Duplicate Killer – Prevent Duplicate Form Submissions?
Duplicate Killer – Prevent Duplicate Form Submissions is developed by NIA. It joined the WordPress.org plugin directory in October 2022.
