Is Image Optimizer for Google Lighthouse free?

Yes, Image Optimizer for Google Lighthouse is free to use. It is available as a free plugin on WordPress.org.

How many websites use Image Optimizer for Google Lighthouse?

Image Optimizer for Google Lighthouse has 200 active installations as tracked by WordPress.org.

What are the best Image Optimizer for Google Lighthouse alternatives?

Popular alternatives to Image Optimizer for Google Lighthouse include Firelight Lightbox, Imsanity, Menu Image, Icons made easy. You can compare them side-by-side on our comparison pages.

Does Image Optimizer for Google Lighthouse work with the latest WordPress?

Image Optimizer for Google Lighthouse has been tested up to WordPress 5.1.22. It requires WordPress 3.0.1+ and PHP 5.2.4+.

Image Optimizer for Google Lighthouse — Reviews, Rating & Alternatives (2026)

Name: Image Optimizer for Google Lighthouse
Rating: 5 (1 reviews)
Author: Evan Norton

As of April 2026, Image Optimizer for Google Lighthouse is a WordPress image plugin with 200 active installations and a 5/5 rating from 1 reviews. It has been downloaded 6.5K+ times in total. Requires WordPress 3.0.1+ and PHP 5.2.4+. Available on WordPress.org since 2018. Last updated 7 years ago — may have compatibility concerns. Top alternative: Firelight Lightbox.

5/51 reviews

200active installs

6.5K+total downloads

8 yearssince 2018

Overview

Upload a JSON file generated by Google’s Lighthouse website auditing tool and this plugin will compress and replace all flagged images using the reSmush.it API.

Instructions

Run Lighthouse on the page of your website you want to optimize images. The easiest way to do this is using Chrome Developer Tools, but you may also utilize the Lighthouse Chrome Extension or run an audit on the command line using Node.
Download the report as a JSON file.
In the WordPress Dashboard, navigate to Media -> Lighthouse Image Optimizer, upload the JSON file and click “Optimize Images.”

Read full description on WordPress.org