PluginSift

Autoptimize vs ThickBox (2026)

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

Autoptimize

Autoptimize

4.7(1,424)

900K+ active installs

Free

Updated 3 weeks ago
View Autoptimize
VS
ThickBox

ThickBox

2.6(5)

200 active installs

Free

Updated 11 years ago
View ThickBox

Quick Verdict

As of April 2026, Autoptimize has a higher user rating (4.7/5 from 1,424 reviews) and leads in active installations (900K+ vs 200). Both are free WordPress plugins. Autoptimize has accumulated 43M+ total downloads while ThickBox has 97K+.

Detailed Comparison

Rating
4.7/5Autoptimize
◄
ThickBox2.6/5
Total Reviews
1,424Autoptimize
◄
ThickBox5
Active Installs
900K+Autoptimize
◄
ThickBox200
Total Downloads
43M+Autoptimize
◄
ThickBox97K+
Support Resolution
40%Autoptimize
ThickBoxN/A
Last Updated
3 weeks agoAutoptimize
◄
ThickBox11 years ago
First Released
2009Autoptimize
ThickBox2008
Age
17 yearsAutoptimize
ThickBox18 years
WP Requires
5.3+Autoptimize
ThickBox2.5+
PHP Requires
7.1+Autoptimize
ThickBoxfalse+
Business Model
FreeAutoptimize
ThickBoxFree
Latest Version
3.1.15Autoptimize
ThickBox1.6.1

Rating Breakdown

Autoptimize

4.7/5(1,424 reviews)
5
90%
4
2%
3
1%
2
1%
1
5%

ThickBox

2.6/5(5 reviews)
5
40%
4
0%
3
0%
2
0%
1
60%

Recent Reviews

Autoptimize Reviews

by uniqf0x

avoid

causes critical error, also no way to deactivate or remove without it crippling my wp site. don’t use it.

by kkrajk

Injects Malware.

Not one but this happened twice in about 6 months across 2 sites. This topic was modified 1 week, 6 days ago by kkrajk.

by davo342

Mala idea adquirir la versión PRO

Pague la versión PRO, y realmente fue un desastre, mi web tuvo constantes caídas, excesiva cantidad de cache, problemas con el CSS, realmente fue una perdida de dinero en el Plugin

ThickBox Reviews

No reviews yet

Frequently Asked Questions

Is Autoptimize or ThickBox more popular?
Autoptimize has 900K+ active installations while ThickBox has 200. Autoptimize is the more widely-used plugin as of April 2026.
Which has better ratings — Autoptimize or ThickBox?
Autoptimize has a 4.7/5 rating from 1,424 reviews, while ThickBox has a 2.6/5 rating from 5 reviews.
Are Autoptimize and ThickBox free?
Autoptimize is free and ThickBox is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Autoptimize or ThickBox?
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?
Autoptimize was last updated 3 weeks ago and ThickBox was last updated 11 years ago.

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