Tekod lab.

This plugin is solution for well known flaw in WordPress architecture: 
automatic resizing uploaded images in each of registered media sizes.
Although price of hosting space is low and we have gigabytes available that can be issue if you have dozen 
(or more) registered sizes and because of that your backup files became larger than 10Gb. 
Sooner or later you will be in situation to download (or even worse – to upload) that backup file.
Our analysis shows that vast majority of resized thumbnails are not used anywhere in website. 
For typical theme with WooCommerce and additional 3 custom media sizes that percentage can be over 90%, 
with 6 custom media sizes it is over 96% !!!
Because of that developers are often uncomfortable with registering more media sizes trying to find 
some workarounds or violating design to accommodate existing similar sizes.
Purpose of this plugin is to eliminate that overhead and allow developer to register as many sizes as he needs.
It will intercept uploading process to prevent creation of thumbnails and intercept getters 
(wp_get_attachment_image_src(), get_the_post_thumbnail_url(), the_post_thumbnail(),…) to create thumbnail if needed. 
Additionally, it will register in database each created thumbnail allowing WordPress to delete it automatically 
when parent image is deleted.
<h3>Usage</h3>
At “Settings” tab of this tool you can pick individually for which size you want to enable or disable this functionality. 
Typically, you will enable it for all sizes.
Button “Delete” on “Utilities” tab will remove all thumbnails for sizes that are handled by this plugin. 
That will significantly reduce size of your “uploads” directory allowing new thumbnails to be recreated on demand.
Button “Regenerate all thumbnails” will remove existing and create new thumbnails for all your uploaded images.
Video demonstration:
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/hfbkbM-1dlY?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<h3>Contact</h3>
Please, send bug reports and feature requests to <a href="mailto:office@tekod.com" rel="nofollow ugc">office@tekod.com</a>

FWS On-Demand-Resizer

Smart on-demand image resizer for WordPress.

OriginalEXE

If you were ever annoyed about the way WordPress handles images resizing, this is a plugin for you.
What this plugin does is it optimizes the image handling in such a way that images are resized only when they are actually needed. What that means is that if your plugins/theme define a lot of image sizes, none of them will be generated on the image upload (like they would be usually), but only if they are actually requested in that size.
Resizing is done only once, images are later normally served by WordPress, so there is no performance hit.
Plugin also includes a method for removing all of the previously generated image sizes (useful when you install this plugin on a site with a lot of existing media).
TO REMOVE image sizes generated prior to activating the plugin, visit the ‘Tools -> Remove image sizes’ and use the button to perform the cleanup.
Other than that, you don’t need to do anything, plugin works silently in the background.
To sum up:
<ul>
<li>Resize images only when needed</li>
<li>Clean up existing images sizes</li>
<li>No performance hit</li>
<li>Free up your hosting space</li>
</ul>

Optimize Images Resizing

Hello! nice plugin one click option and all done!
add a custom search for images to detele.
ex. -unsmushed.jpg

God Job! Need More Features!

Plugin optimizes the process of generating custom image sizes in WordPress and offers a cleanup functionality for preexisting images.

FWS On-Demand-Resizer vs Optimize Images Resizing