WordPress plugin comparison

Duplicate Killer vs Redirection for Contact Form 7

Duplicate Killer

by NIA

1K+ installs5.0

Redirection for Contact Form 7

by Themeisle

200K+ installs4.7

At a glance

Redirection for Contact Form 7 has more active installs: 200K+, against 1K+ for Duplicate Killer.
On a typical day, Redirection for Contact Form 7 is downloaded about 3,391 times, Duplicate Killer about 71.
Duplicate Killer is rated higher: 5.0 out of 5 from 3 reviews, against 4.7 from 275 reviews.
Redirection for Contact Form 7 was updated more recently: Nov 6, 2026, against Nov 2, 2026 for Duplicate Killer.
Both are tested up to WordPress 7.1.4.
Redirection for Contact Form 7 has been around longer: since 2017, against 2022 for Duplicate Killer.

Redirection for Contact Form 7 leads on 5 of 6 comparable lines.

Metric	Duplicate Killer	Redirection for Contact Form 7
Popular rank	#6,208	#214
Active installs	1K+	200K+
Downloads, last 30 days	2.9K	315.5K
Rating	5.0(3)	4.7(275)
Support threads resolved	–	100%
Tested up to	7.1.4	7.1.4
Search multiplier	×0.63	×1.80
Last release	7 days ago	3 days ago
Requires PHP	5.6.20	–

From WordPress.org's public data, refreshed every night. Downloads are WordPress.org's official daily figures for the last 30 days.

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