Image Optimizer – Optimize Images and Convert to WebP or AVIF
Automatically resize, optimize, and convert images to WebP and AVIF. Compress images in bulk or on upload to boost your WordPress site performance.
1.6(72 reviews)
·1.0M+ active installs·Updated 1 month agoAs of April 2026, Image Optimizer is a WordPress performance plugin with 1.0M+ active installations and a 1.6/5 rating from 72 reviews. It has been downloaded 13M+ times in total. Requires WordPress 6.6+ and PHP 7.4+. Available on WordPress.org since 2024. Recently updated within the last 3 months. Download volume is stable this week. Top alternative: LiteSpeed Cache.
1.6/572 reviews
1.0M+active installs
13M+total downloads
2 yearssince 2024
Overview
Image Optimizer is an easy-to-use WordPress plugin that reduces image size through various compression and resizing techniques – all of which preserve the highest possible image quality. Image Optimizer supports many popular formats, including JPEG, PNG, WebP, AVIF, and GIF.
REDUCED FILE SIZES FOR BOOSTED PERFORMANCE
Image Optimizer ensures faster loading times, enhanced user experience, and overall boosted website performance by reducing the size of your website’s images, resulting in improved Core Web Vitals and search engine rankings. With the Image Optimizer’s exceptional capabilities and unique algorithms, you can fine tune images and reduce their file sizes while retaining quality with lossless or lossy compression.
FEATURES
- Image formats supported include JPEG, PNG,…
Screenshots
Ratings & Reviews
1.672 reviews
5 ★
7
4 ★
1
3 ★
4
2 ★
4
1 ★
56
Recent Reviews
Decent Optimizer
by riana71·3 weeks ago
Tried it for image compression on my site. It does reduce size and helps a bit with loading. Setup was easy, too. But sometimes optimization feels a bit slow. Still ok for basic use.
ottimizzazione e conversione in webp molto buona
by Filippo Battaiola·3 weeks ago
ottimizzazione e conversione in webp molto buona
All media optimised in one click
by tomz99·1 month ago
For now i find this plugin very good. Love Avif format, 54% space saved for my website and very Good results on PageSpeed Insights.
Including all photo sizes in the 200 free photo limit
by miracozel·1 month ago
Including all photo sizes in the 200 free photo limit really makes one feel cheated. It’s a disgraceful tactic to get people to upgrade to a paid package.
Yes, a size selection feature has been added to the settings. But you’d give a warning first, wouldn’t you?
It’s just bad
by suup10·2 months ago
The folks at elementor making yet another baffling choice, this time with a completely nonsensical image optimizer that compresses 1mb jpg’s to 965kb avifs. Just stop it with the “elementor one” nonsense and stay with it for once. Webflow and Framer are both doing great, yet here we are with the bizarre business decisions of Elementor.
Download Trends
Today: 8KYesterday: 7KThis week: 46KPeriod total: 6.2M
Compatibility
| WordPress | 6.6+ requiredTested up to 6.9.4 |
| PHP | 7.4+ required |
Version Adoption
v1.7
51.8%
v1.6
39.0%
Other
9.3%
Top Alternatives to Image Optimizer – Optimize Images and…
Frequently Asked Questions
Changelog
1.7.3 2026-02-17
- Tweak: Enabled display of WordPress admin notices for better visibility
- Fix: Resolved issues related to feature usage tracking
- Fix: Resolved a visual glitch on the Image Optimizer Stats in the Media Library screen
Contributors
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.