William P. Davis

This plugin allows you to duplicate images you have in the media library and attach them to a new post, rather than having to create a new copy of the image and upload it to WordPress again.
It works by copying the post and its metadata. It does not actually copy the image. Any changes you make to the new copy of the attachment — updating the caption or cropping, for example, will only be applied to the new attachment, not to the original.
This is useful if you query posts for its attachments to display photos, or if you make use of galleries and have old images you might want to include, among other things.
To use, go to the Library tab in a post. You should see an ‘Attach’ link.

BDN Duplicate Images

Allows you to duplicate images in the media library and attach them to the current post.

Jeff Starr

Easily disable any extra image sizes
This plugin provides options to disable the extra images generated by WordPress.
Options include
<ul>
<li>Disable Thumbnail Size</li>
<li>Disable Medium Size</li>
<li>Disable Large Size</li>
<li>Disable Medium Large (768px)</li>
<li>Disable 1536×1536 Size</li>
<li>Disable 2048×2048 Size</li>
<li>Disable Big/Scaled Size</li>
</ul>
The plugin settings screen does a good job of explaining the different image sizes. Should all be self-explanatory, let me know if anything can be improved.
Features
<ul>
<li>Lightweight and secure</li>
<li>Built with the WP API and standards</li>
<li>Simple to use – anyone can do it</li>
<li>One-click restore default options</li>
<li>Easy peasy.</li>
</ul>
Why is this useful?
<a href="https://perishablepress.com/disable-wordpress-generated-images/" rel="nofollow ugc">This article</a> explains everything you need to know about the “hows” and the “whys” and such.
Important
Please understand that this plugin:
<ul>
<li>Does not affect any existing images</li>
<li>Only works while the plugin is active</li>
<li>Does not delete any images</li>
<li>Only prevents WordPress from generating extra sized images</li>
<li>If all extra sizes are disabled, only original images will be uploaded</li>
</ul>
<a href="https://perishablepress.com/disable-wordpress-generated-images/" rel="nofollow ugc">Learn more</a> about the techniques and code used in this plugin.
Privacy
This plugin does not collect or store any user data. It does not set any cookies, and it does not connect to any third-party locations. Thus, this plugin does not affect user privacy in any way.
Disable Media Sizes is developed and maintained by <a href="https://x.com/perishable" rel="nofollow ugc">Jeff Starr</a>, 15-year <a href="https://plugin-planet.com/" rel="nofollow ugc">WordPress developer</a> and <a href="https://books.perishablepress.com/" rel="nofollow ugc">book author</a>.
Support development
I develop and maintain this free plugin with love for the WordPress community. To show support, you can <a href="https://monzillamedia.com/donate.html" rel="nofollow ugc">make a donation</a> or purchase one of my books:
<ul>
<li><a href="https://wp-tao.com/" rel="nofollow ugc">The Tao of WordPress</a></li>
<li><a href="https://digwp.com/" rel="nofollow ugc">Digging into WordPress</a></li>
<li><a href="https://htaccessbook.com/" rel="nofollow ugc">.htaccess made easy</a></li>
<li><a href="https://wp-tao.com/wordpress-themes-book/" rel="nofollow ugc">WordPress Themes In Depth</a></li>
<li><a href="https://books.perishablepress.com/downloads/wizards-collection-sql-recipes-wordpress/" rel="nofollow ugc">Wizard’s SQL Recipes for WordPress</a></li>
</ul>
And/or purchase one of my premium WordPress plugins:
<ul>
<li><a href="https://plugin-planet.com/bbq-pro/" rel="nofollow ugc">BBQ Pro</a> – Blazing fast WordPress firewall</li>
<li><a href="https://plugin-planet.com/blackhole-pro/" rel="nofollow ugc">Blackhole Pro</a> – Automatically block bad bots</li>
<li><a href="https://plugin-planet.com/banhammer-pro/" rel="nofollow ugc">Banhammer Pro</a> – Monitor traffic and ban the bad guys</li>
<li><a href="https://plugin-planet.com/ga-google-analytics-pro/" rel="nofollow ugc">GA Google Analytics Pro</a> – Connect WordPress to Google Analytics</li>
<li><a href="https://plugin-planet.com/head-meta-pro/" rel="nofollow ugc">Head Meta Pro</a> – Ultimate Meta Tags for WordPress</li>
<li><a href="https://plugin-planet.com/rest-pro-tools/" rel="nofollow ugc">REST Pro Tools</a> – Awesome tools for managing the WP REST API</li>
<li><a href="https://plugin-planet.com/simple-ajax-chat-pro/" rel="nofollow ugc">Simple Ajax Chat Pro</a> – Unlimited chat rooms</li>
<li><a href="https://plugin-planet.com/usp-pro/" rel="nofollow ugc">USP Pro</a> – Unlimited front-end forms</li>
</ul>
Links, tweets and likes also appreciated. Thank you! 🙂

Disable Media Sizes

Provides options to disable the extra images generated by WordPress.

BDN Duplicate Images vs Disable Media Sizes