PluginSift

Unique Headers vs Last-Modified and If-Modified-Since… (2026)

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

Unique Headers

Unique Headers

4.9(160)

20K+ active installs

Free

Updated 2 years ago
View Unique Headers
VS
Last-Modified and If-Modified-Since…

Last-Modified and If-Modified-Since…

5(2)

200 active installs

Free

Updated 4 years ago
View Last-Modified and If-Modified-Since…

Quick Verdict

As of April 2026, Last-Modified and If-Modified-Since… has a higher user rating (5/5 from 2 reviews) while Unique Headers leads in active installations (20K+ vs 200). Both are free WordPress plugins. Unique Headers has accumulated 414K+ total downloads while Last-Modified and If-Modified-Since… has 2.5K+.

Detailed Comparison

Rating
4.9/5Unique Headers
►
Last-Modified and If-Modified-Since…5/5
Total Reviews
160Unique Headers
◄
Last-Modified and If-Modified-Since…2
Active Installs
20K+Unique Headers
◄
Last-Modified and If-Modified-Since…200
Total Downloads
414K+Unique Headers
◄
Last-Modified and If-Modified-Since…2.5K+
Support Resolution
N/AUnique Headers
Last-Modified and If-Modified-Since…N/A
Last Updated
2 years agoUnique Headers
◄
Last-Modified and If-Modified-Since…4 years ago
First Released
2012Unique Headers
Last-Modified and If-Modified-Since…2021
Age
14 yearsUnique Headers
Last-Modified and If-Modified-Since…5 years
WP Requires
4.3+Unique Headers
Last-Modified and If-Modified-Since…5.2.4+
PHP Requires
false+Unique Headers
Last-Modified and If-Modified-Since…false+
Business Model
FreeUnique Headers
Last-Modified and If-Modified-Since…Free
Latest Version
1.9.3Unique Headers
Last-Modified and If-Modified-Since…1.0

Rating Breakdown

Unique Headers

4.9/5(160 reviews)
5
97%
4
2%
3
1%
2
0%
1
1%

Last-Modified and If-Modified-Since…

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

Recent Reviews

Unique Headers Reviews

by italliance

Simply Awesome

Super easy to use. Thank you for developing this.

by SSVapes

works perfectly

works perfectly. the shortcodes could be better

by laserulm

Great job!

thx

Last-Modified and If-Modified-Since… Reviews

No reviews yet

Frequently Asked Questions

Is Unique Headers or Last-Modified and If-Modified-Since… more popular?
Unique Headers has 20K+ active installations while Last-Modified and If-Modified-Since… has 200. Unique Headers is the more widely-used plugin as of April 2026.
Which has better ratings — Unique Headers or Last-Modified and If-Modified-Since…?
Unique Headers has a 4.9/5 rating from 160 reviews, while Last-Modified and If-Modified-Since… has a 5/5 rating from 2 reviews.
Are Unique Headers and Last-Modified and If-Modified-Since… free?
Unique Headers is free and Last-Modified and If-Modified-Since… is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Unique Headers or Last-Modified and If-Modified-Since…?
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?
Unique Headers was last updated 2 years ago and Last-Modified and If-Modified-Since… was last updated 4 years ago.

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