PluginSift

Autoptimize vs Image Source Overlay (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 Yesterday
View Autoptimize
VS
Image Source Overlay

Image Source Overlay

5(1)

50 active installs

Free

Updated 2 years ago
View Image Source Overlay

Quick Verdict

As of April 2026, Image Source Overlay has a higher user rating (5/5 from 1 reviews) while Autoptimize leads in active installations (900K+ vs 50). Both are free WordPress plugins. Autoptimize has accumulated 43M+ total downloads while Image Source Overlay has 3.3K+.

Detailed Comparison

Rating
4.7/5Autoptimize
►
Image Source Overlay5/5
Total Reviews
1,424Autoptimize
◄
Image Source Overlay1
Active Installs
900K+Autoptimize
◄
Image Source Overlay50
Total Downloads
43M+Autoptimize
◄
Image Source Overlay3.3K+
Support Resolution
36%Autoptimize
Image Source OverlayN/A
Last Updated
YesterdayAutoptimize
◄
Image Source Overlay2 years ago
First Released
2009Autoptimize
Image Source Overlay2022
Age
17 yearsAutoptimize
Image Source Overlay4 years
WP Requires
5.3+Autoptimize
Image Source Overlay4.6+
PHP Requires
7.1+Autoptimize
Image Source Overlay5.6+
Business Model
FreeAutoptimize
Image Source OverlayFree
Latest Version
3.1.15.1Autoptimize
Image Source Overlay1.1.3

Rating Breakdown

Autoptimize

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

Image Source Overlay

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

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

Image Source Overlay Reviews

No reviews yet

Frequently Asked Questions

Is Autoptimize or Image Source Overlay more popular?
Autoptimize has 900K+ active installations while Image Source Overlay has 50. Autoptimize is the more widely-used plugin as of April 2026.
Which has better ratings — Autoptimize or Image Source Overlay?
Autoptimize has a 4.7/5 rating from 1,424 reviews, while Image Source Overlay has a 5/5 rating from 1 reviews.
Are Autoptimize and Image Source Overlay free?
Autoptimize is free and Image Source Overlay is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Autoptimize or Image Source Overlay?
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 Yesterday and Image Source Overlay was last updated 2 years ago.

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