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Every time you upload an image, WordPress doesn’t just store your file — it generates a separate cropped copy for every registered image size. A fresh install already creates three (thumbnail, medium, and large) on top of the original, so a single upload becomes four files on your server.
Themes and plugins add many more. A typical site might register hero, slider, product thumbnail, team member, and testimonial sizes — and WooCommerce adds several of its own. With six registered sizes, one upload turns into seven files, even when the page only ever displays one of them. The rest sit on disk doing nothing but consuming space.
Multiply that across hundreds of posts, pages, and products and the waste adds up fast: bloated storage, slower backups, and longer upload processing. It’s especially painful on WooCommerce sites, where uploading a single banner or hero image also generates the full set of product thumbnail sizes you’ll never use for that image.
WP Image Sizes fixes this by letting you decide which sizes WordPress is allowed to create.
<ul>
<li>Per post type control — Assign the exact image sizes that matter to each post type from a simple settings page. A slider post type might only need one large size; testimonials might only need a thumbnail.</li>
<li>Choose sizes at upload time — When you add media, the uploader shows the available sizes so you can pick what gets generated for that specific upload.</li>
<li>Disable thumbnails entirely — Skip generating any additional sizes for a post type or a single upload when you only need the original.</li>
<li>No lock-in — WP Image Sizes never caches or alters your files. Any images already generated stay intact, even if you deactivate or remove the plugin.</li>
</ul>
The result is a leaner media library, less wasted disk space, and a faster, lighter WordPress site.
<h3>PRO</h3>
The free plugin controls which sizes get generated on new uploads. WP Image Sizes Pro extends this to your existing media and adds automation:
<ul>
<li>Bulk Create Image Sizes — Generate selected image sizes for all existing images of a chosen post type. Perfect after registering a new size or switching themes.</li>
<li>Bulk Delete Image Sizes — Remove unwanted image size files from existing media to reclaim server space in one click.</li>
<li>Create Images on Runtime — Automatically generate a missing image size the moment it is first requested on the front end, instead of pre-creating every size.</li>
</ul>
<a href="https://aiwatech.com/product/wp-image-sizes-pro/" rel="nofollow ugc">Get WP Image Sizes Pro</a>

WP Image Sizes

Take control of the image sizes WordPress generates. Pick only the sizes you actually use, per post type, and reclaim wasted server space.

pressupinc

<h4>View and Use Every Size of Your Images</h4>
When you upload an image to your WordPress site, WordPress auto-generates lots of sizes of it. However, there aren’t many good ways to see and use those sizes:
<ul>
<li>The Media Attachment page in “Media” doesn’t list anything about the different image sizes, or the permalinks to use them.</li>
<li>“Add Media” in the post editor doesn’t always show you all the sizes that exist (such as sizes intended for featured images).</li>
<li>There’s no easy way to simply copy a custom-sized image’s permalink.</li>
</ul>
Until now! Display All Image Sizes displays information about every size of every image: name, dimensions, and permalink.
<h4>How to Use</h4>
Just install and activate the plugin, and you’ll see a list of all sizes of each image in both the “Add Media” pop-up modal, and in each image’s individual page in “Media.” (See Screenshots.)
<h4>Anything else?</h4>
Well, read <a href="http://wpshout.com/" rel="nofollow ugc">read WPShout</a> for WordPress news and tutorials! And <a href="http://pressupinc.com/" rel="nofollow ugc">contact us</a> if you need help with WordPress.
Image credit for banner: <a href="https://www.flickr.com/photos/wwworks/" rel="nofollow ugc">woodleywonderworks</a>

Display All Image Sizes


I needed exactly this plugin for working with the AcyMailing newsletter plugin. AcyMailing offers two ways to insert an image into the email - in the text editor (TinyMCE strangely configured) or as a block. In both cases there is no way to select an image size, and default is the original size. One can enter the URL of the image - but normal users (who uploaded fotos from their smartphones) won't know how to get the URL of a thumb by looking on the disc with FTP... And due to the proportional resizing you really do have to have that individual file name with the calculated pixel sizes.



This plugin was the way ahead. And as a previous reviewer noted, it really is skinny. There's effectively nothing which could go wrong with it :) The problem was only to find it - as it is so old, WordPress plugin search doesn't show it, at least not on the first seven pages. I found a mention of it in a YouTube video and then actually had to use Google to find it!!!



So PLEASE, dear author, just update the "Tested to", that would be really great!



One day later: Well, I've now created an updated version of the plugin myself, with an icon to copy the selected size (path) to the clipboard. Translation ready, and translated to German. I don't have the time to put it on wordpress.org, but you can get it here. It's clean, but please feel free to unpack it and check it for yourself.


Still works perfectly after 7 years

Displays all sizes of each image, including name, dimensions, and permalink for each size.

WP Image Sizes vs Display All Image Sizes