shindev

Every time you upload an image, WordPress and your theme create several extra copies — often eight to ten files per image. On shared hosting with inode (file count) limits, this fills your quota fast, slows down backups, and wastes disk space.
ShinPix gives you back control:
<ul>
<li>Choose which image sizes are generated. See every size registered by WordPress and your theme, with dimensions, and disable the ones you do not use.</li>
<li>See your savings. ShinPix shows how many files each upload stores now versus the maximum, so you can see the inodes you save at a glance.</li>
<li>Safe by default. ShinPix flags the sizes the WordPress admin and block editor rely on, and warns you before you disable them.</li>
<li>Cap oversized uploads. Automatically scale down huge phone photos (often 4000px+) to a sensible maximum, keeping web quality while cutting file size.</li>
<li>Convert to WebP. Create a lighter WebP copy of every new upload and serve it automatically to browsers that support it — with the original kept as a fallback. ShinPix detects whether your server can produce WebP and disables the feature gracefully if it cannot.</li>
<li>Compress on upload. Set the quality used for the images WordPress generates, so every size is leaner.</li>
<li>Optimize your existing library. Scan what is already in your Media Library and convert it to WebP in the background, batch by batch, with a progress bar you can pause and resume. Optimize or re-optimize a single image right from the Media Library, and retry anything that failed.</li>
</ul>
ShinPix is built for the real world of budget shared hosting. It is lightweight, adds no front-end overhead, and only changes what happens at upload time.
Coming soon (and on the roadmap):
<ul>
<li>AVIF conversion (Pro)</li>
<li>Scheduled, fully automatic background processing (Pro)</li>
<li>Offload to S3, Cloudflare R2, Wasabi and other object storage to remove image files from your server entirely</li>
</ul>
ShinPix is part of the ShinKit family of WordPress tools.

ShinPix – Image Optimizer & Size Control

Control which thumbnail sizes WordPress generates, cap oversized uploads, and convert images to WebP — built for shared hosting.

charliepatel

DraftPress Team

99robots

Custom Image Sizes by 99 Robots is a quick and simple way for you to add your own image sizes to your WordPress site.
You can view this plugin on GitHub at: <a href="https://github.com/99robots/99robots-custom-image-sizes" rel="nofollow ugc">https://github.com/99robots/99robots-custom-image-sizes</a>
Also, please <a href="https://draftpress.com/products/?utm_source=wprepo&utm_medium=custom-image-sizes&utm_campaign=desc" rel="nofollow ugc">check out our other plugins</a> 🙂

Custom Image Sizes by 99 Robots


This seems like this is the best custom image size plugin freely available today.



The plugin does what one expects/needs it to do without any added complexity. The interface is then neither too basic/unstyled (like some other popular custom image size plugins) nor does it go over the top & make things more complex than it needs to be.



It's also nice to see this plugin is on GitHub where the most recent patch was actually community-provided & officially adopted in the new release (rather than being somewhat stagnant and/or over-relying on the plugin developer to come up with improvements/fixes/etc.) It's also good to see some activity regarding support and updates (again, unlike some other popular plugins for this.)


Worked exactly as expected with a nice interface

Custom Image Sizes by 99 Robots is a quick and simple way for you to add your own image sizes to your WordPress site.

ShinPix – Image Optimizer & Size Control vs Custom Image Sizes by 99 Robots