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Kraken.io Image Optimizer — WordPress Image Optimization Plugin

Kraken.io Image Optimizer – Compress, Convert to WebP & AVIF, Resize & Bulk Optimize

by Kraken.io · WordPress.org page · Website

v3.0.3 Tested up to WP 7.0.7 PHP 5.6+

Kraken.io Image Optimizer has 10,000+ active installs on WordPress.org and 421,400 downloads all time. It was downloaded 2,734 times in the last 30 days. The last update was on June 22, 2026, tested up to WordPress 7.0.7.

Kraken.io Image Optimizer at a glance

Active installs
10,000+
Total downloads
421,400
Downloads, last 30 days
2,734
30-day growth
–
downloads vs the previous 30 days

Is Kraken.io Image Optimizer well maintained?

Support threads resolved
No open threads
nothing waiting on the WordPress.org forum
WordPress compatibility
Behind
tested up to WordPress 7.0.7, not yet with the current 7.1.3
One-star reviews
8%
10 of 119 reviews on WordPress.org

Kraken.io Image Optimizer reviews and ratings

119 reviews on WordPress.org, with the most recent ones as their authors posted them.

All reviews
4.5 out of 5

119 reviews

5★
100
4★
6
3★
1
2★
2
1★
10

Download and install history

4,082 downloads over the last 48 days. Snapshots taken daily from WordPress.org.

Downloads per day
Kraken.io Image Optimizer downloads per day050100150200Sep 5Sep 28Oct 22Downloads per day
Active installs
Kraken.io Image Optimizer active installs02.5k5k7.5k10kSep 5Sep 28Oct 22Active installs
Rating out of 5
Kraken.io Image Optimizer rating01.32.53.85Sep 5Sep 28Oct 22Rating out of 5
Reviews
Kraken.io Image Optimizer review count050100150200Sep 5Sep 28Oct 22Reviews

Where Kraken.io Image Optimizer ranks on WordPress.org

The rankings we track that Kraken.io Image Optimizer appears in, and how its position changed over 30 days.

Ranking WordPress.org placement Position 30 days
Best Image Optimization Plugins #20 by tag, #38 in search #19 –

Kraken.io Image Optimizer alternatives

Plugins that solve the same problem, ranked by how closely they overlap with Kraken.io Image Optimizer.

All Kraken.io Image Optimizer alternatives

Details

Optimize images automatically — compress, resize and convert to WebP, AVIF & more with Kraken.io. Faster pages, smaller files, same quality.

The full description, screenshots and every review live on the WordPress.org page.

Rankings Kraken.io Image Optimizer competes in

Tags

  • AVIF
  • compress images
  • convert webp
  • image optimization
  • optimize images
Version
3.0.3
Last updated
Jun 22, 2026
First published
Feb 24, 2014
Requires WordPress
4.9
Tested up to
7.0.7
Requires PHP
5.6
Pricing
Free on WordPress.org

Kraken.io Image Optimizer FAQ

How many active installs does Kraken.io Image Optimizer have?

WordPress.org reports 10,000+ active installs for Kraken.io Image Optimizer as of October 22, 2026.

Is Kraken.io Image Optimizer still maintained?

Yes. The last release was on June 22, 2026 and it is tested up to WordPress 7.0.7.

Is Kraken.io Image Optimizer free?

Kraken.io Image Optimizer is free to install from WordPress.org. Many plugins also sell a paid version or add-ons.

Where does Kraken.io Image Optimizer rank among Image Optimization Plugins?

Kraken.io Image Optimizer is #19 in the WordPress.org Image Optimization Plugins ranking.