PluginSift

Delete Duplicate Posts vs Duplicate Killer – Prevent Duplicate… (2026)

Detailed side-by-side comparison of two WordPress plugins, based on real-time data from WordPress.org.

Delete Duplicate Posts

Delete Duplicate Posts

4.8(149)

20K+ active installs

Free

Updated 3 weeks ago
View Delete Duplicate Posts
VS
Duplicate Killer – Prevent Duplicate…

Duplicate Killer – Prevent Duplicate…

5(3)

1.0K+ active installs

Free + Premium

Updated Yesterday
View Duplicate Killer – Prevent Duplicate…

Quick Verdict

As of April 2026, Duplicate Killer – Prevent Duplicate… has a higher user rating (5/5 from 3 reviews) while Delete Duplicate Posts leads in active installations (20K+ vs 1.0K+). Both are free WordPress plugins. Delete Duplicate Posts has accumulated 875K+ total downloads while Duplicate Killer – Prevent Duplicate… has 20K+.

Detailed Comparison

Rating
4.8/5Delete Duplicate Posts
►
Duplicate Killer – Prevent Duplicate…5/5
Total Reviews
149Delete Duplicate Posts
◄
Duplicate Killer – Prevent Duplicate…3
Active Installs
20K+Delete Duplicate Posts
◄
Duplicate Killer – Prevent Duplicate…1.0K+
Total Downloads
875K+Delete Duplicate Posts
◄
Duplicate Killer – Prevent Duplicate…20K+
Support Resolution
N/ADelete Duplicate Posts
Duplicate Killer – Prevent Duplicate…100%
Last Updated
3 weeks agoDelete Duplicate Posts
►
Duplicate Killer – Prevent Duplicate…Yesterday
First Released
2009Delete Duplicate Posts
Duplicate Killer – Prevent Duplicate…2022
Age
17 yearsDelete Duplicate Posts
Duplicate Killer – Prevent Duplicate…4 years
WP Requires
4.7+Delete Duplicate Posts
Duplicate Killer – Prevent Duplicate…5.2+
PHP Requires
7.4+Delete Duplicate Posts
Duplicate Killer – Prevent Duplicate…5.6.20+
Business Model
FreeDelete Duplicate Posts
Duplicate Killer – Prevent Duplicate…Free + Premium
Latest Version
5.0.3Delete Duplicate Posts
Duplicate Killer – Prevent Duplicate…1.5.7

Rating Breakdown

Delete Duplicate Posts

4.8/5(149 reviews)
5
89%
4
6%
3
1%
2
2%
1
3%

Duplicate Killer – Prevent Duplicate…

5/5(3 reviews)
5
100%
4
0%
3
0%
2
0%
1
0%

Recent Reviews

Delete Duplicate Posts Reviews

by etzika

Awsome

Simple – Easy – To the point

by woxel

woxel

Плагин работает

by slvrdlphn

Works perfectly

I’m so glad I discovered this plugin.

Duplicate Killer – Prevent Duplicate… Reviews

by jeng22

Great and straightforward plugin

Plugin is straightforward and the support is really responsive and helpful.

by hambad

Fixed the issue with duplicate CF7 Emails!!

There seems to be an issue with CF7 where duplicate emails are sent out, and the forms render errors/loading spinners twice as well. I’ve done a good bit of research and looked everywhere, but had no

by peterlovescola

Works like a charm

This solves my duplicate entries headache – works as intended. Thanks!

Frequently Asked Questions

Is Delete Duplicate Posts or Duplicate Killer – Prevent Duplicate… more popular?
Delete Duplicate Posts has 20K+ active installations while Duplicate Killer – Prevent Duplicate… has 1.0K+. Delete Duplicate Posts is the more widely-used plugin as of April 2026.
Which has better ratings — Delete Duplicate Posts or Duplicate Killer – Prevent Duplicate…?
Delete Duplicate Posts has a 4.8/5 rating from 149 reviews, while Duplicate Killer – Prevent Duplicate… has a 5/5 rating from 3 reviews.
Are Delete Duplicate Posts and Duplicate Killer – Prevent Duplicate… free?
Delete Duplicate Posts is free and Duplicate Killer – Prevent Duplicate… is free + premium. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Delete Duplicate Posts or Duplicate Killer – Prevent Duplicate…?
Support resolution data is not available for all plugins. Check each plugin's WordPress.org support forum for current response quality.
Which plugin is updated more frequently?
Delete Duplicate Posts was last updated 3 weeks ago and Duplicate Killer – Prevent Duplicate… was last updated Yesterday.

Plugin data sourced from WordPress.org. Comparison and analysis by PluginSift.