WEB-SHOP-HOSTING

This plugin allows you to optimize images from your media library and thus improve the SEO performance of your site. 
This plugin is based on the JPEGOPTIM utility and PNGQUANT utility which must be installed on your host. 
The essence of our plugin is that when it starts, it sorts through all the attachments for the articles of your WP-site 
and processes them right at the place where they are located. 
After that, the attachment is marked as processed, which prevents it from being processed again. 
In the admin page you can view the total number of your images and the number of processed images, 
as well as select the number of images to be processed in one cycle. 
At the moment, the script for optimization is made in the form of a standard wp-action (its name is “startklar_image_optimizer_process”) 
that can be called from another place.
Here is an example of how to call this action: 
 do_action( ‘startklar_image_optimizer_process’ );
For example, for a simple implementation, you can use the “WP Crontrol” plugin (https://ru.wordpress.org/plugins/wp-crontrol/) 
 by which you can create a cron task that can optimize one image every minute. 
This tactic was chosen in order to process all the files of the site without introducing excessive load to the site 
(since the native cron in WP is activated by hits and has a runtime limit, like similar http sessions of this host).
Screenshot #1 shows how easy it is to set up a cron-task.

Startklar Image Optimizer

This plugin allows you to optimize images from your media library and thus improve the SEO performance of your site.

WordPress.org

This plugin captures real user metrics about what elements are displayed on the page across a variety of device form factors (e.g. desktop, tablet, and phone) in order to apply loading optimizations which are not possible with WordPress’s current server-side heuristics.
This plugin is a framework dependency which does not provide optimization functionality on its own. For that, please install the <a href="https://wordpress.org/plugins/image-prioritizer/" rel="ugc">Image Prioritizer</a> and <a href="https://wordpress.org/plugins/embed-optimizer/" rel="ugc">Embed Optimizer</a> dependent plugins (among <a href="https://github.com/WordPress/performance/labels/%5BPlugin%5D%20Optimization%20Detective" rel="nofollow ugc">others</a> to come from the WordPress Core Performance team). There are currently no settings and no user interface for this plugin since it is designed to work without any configuration.
Your site must currently have the REST API accessible to unauthenticated frontend visitors since this is how real user metrics are collected about pages on your site; nevertheless, <a href="https://github.com/WordPress/performance/issues/1311" rel="nofollow ugc">exploration</a> is underway for providing alternative mechanisms for collecting the metrics. Also, please note that no metrics are currently collected from Safari since it does not yet support the <a href="https://developer.mozilla.org/en-US/docs/Web/API/LargestContentfulPaint" rel="nofollow ugc">Largest Contentful Paint</a> metric, but support for this <a href="https://web.dev/explore/learn-core-web-vitals" rel="nofollow ugc">Core Web Vitals</a> metric is coming this year <a href="https://webkit.org/blog/16458/announcing-interop-2025/#core-web-vitals" rel="nofollow ugc">via Interop 2025</a>.
Please refer to the <a href="https://github.com/WordPress/performance/blob/trunk/plugins/optimization-detective/docs/README.md" rel="nofollow ugc">full plugin documentation</a> for a <a href="https://github.com/WordPress/performance/blob/trunk/plugins/optimization-detective/docs/introduction.md" rel="nofollow ugc">technical introduction</a>, <a href="https://github.com/WordPress/performance/blob/trunk/plugins/optimization-detective/docs/hooks.md" rel="nofollow ugc">filter/action hooks</a>, and <a href="https://github.com/WordPress/performance/blob/trunk/plugins/optimization-detective/docs/extensions.md" rel="nofollow ugc">extensions</a> that show use cases and examples. You can also watch the talk from WordCamp Asia 2025: <a href="https://weston.ruter.net/2025/02/21/boosting-performance-with-optimization-detective/" rel="nofollow ugc">Boosting Performance with Optimization Detective</a>.

Optimization Detective

Provides a framework for leveraging real user metrics to detect optimizations for improving page performance.

Startklar Image Optimizer vs Optimization Detective