PluginSift

Autoptimize vs Modern Image Formats (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
Modern Image Formats

Modern Image Formats

3.3(23)

100K+ active installs

Free

Updated 2 months ago
View Modern Image Formats

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 100K+). Both are free WordPress plugins. Autoptimize has accumulated 43M+ total downloads while Modern Image Formats has 979K+. Modern Image Formats has a higher support resolution rate (67% vs 40%).

Detailed Comparison

Rating
4.7/5Autoptimize
◄
Modern Image Formats3.3/5
Total Reviews
1,424Autoptimize
◄
Modern Image Formats23
Active Installs
900K+Autoptimize
◄
Modern Image Formats100K+
Total Downloads
43M+Autoptimize
◄
Modern Image Formats979K+
Support Resolution
40%Autoptimize
►
Modern Image Formats67%
Last Updated
3 weeks agoAutoptimize
◄
Modern Image Formats2 months ago
First Released
2009Autoptimize
Modern Image Formats2023
Age
17 yearsAutoptimize
Modern Image Formats3 years
WP Requires
5.3+Autoptimize
Modern Image Formats6.6+
PHP Requires
7.1+Autoptimize
Modern Image Formats7.2+
Business Model
FreeAutoptimize
Modern Image FormatsFree
Latest Version
3.1.15Autoptimize
Modern Image Formats2.6.1

Rating Breakdown

Autoptimize

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

Modern Image Formats

3.3/5(23 reviews)
5
52%
4
4%
3
0%
2
4%
1
39%

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

Modern Image Formats Reviews

by lacoste89

Funktioniert wie beschrieben – Heimvorteil weil von WordPress entwickelt

Ich nutze dieses Plugin auf allen neuen Webseiten, damit Bilder automatisch nach AVIF konvertiert werden. Es funktionierte bisher immer ohne Probleme, deshalb kann ich es uneingeschränkt empfehlen. Ic

by primerpizza

Doesn’t work, support not helpful

Been trying to get this thing to work but it just wont serve the generated images. Support stopped replying.

by pdjp

compression?

Good plugin, but no option to set the WebP compression value. What compression is used here?

Frequently Asked Questions

Is Autoptimize or Modern Image Formats more popular?
Autoptimize has 900K+ active installations while Modern Image Formats has 100K+. Autoptimize is the more widely-used plugin as of April 2026.
Which has better ratings — Autoptimize or Modern Image Formats?
Autoptimize has a 4.7/5 rating from 1,424 reviews, while Modern Image Formats has a 3.3/5 rating from 23 reviews.
Are Autoptimize and Modern Image Formats free?
Autoptimize is free and Modern Image Formats is free. Both can be downloaded from the WordPress.org plugin directory.
Which plugin has better support — Autoptimize or Modern Image Formats?
As of April 2026, Autoptimize has a 40% support resolution rate while Modern Image Formats has a 67% rate.
Which plugin is updated more frequently?
Autoptimize was last updated 3 weeks ago and Modern Image Formats was last updated 2 months ago.

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