Jeff Starr

This plugin completely disables WP responsive-image feature that was introduced in version 4.4. It is meant for people who know what they are doing and want to use their own responsive-image techniques.
Features
<ul>
<li>Disables responsive images on the front-end</li>
<li>Disables generation of <code>medium_large</code> 768px image size</li>
<li>Completely plug-and-play, no configuration required</li>
<li>Works perfectly with or without Gutenberg block editor</li>
<li>Uses the WP API to disable responsive images</li>
<li>Clean, lightweight code, a real pleasure</li>
</ul>
Why would anyone want to do this? Check out the FAQs below for all sorts of good reasons.
Check out <a href="https://perishablepress.com/disable-wordpress-responsive-images/" rel="nofollow ugc">Disable WordPress Responsive Images</a> at Perishable Press for more information about how this plugin works, etc.
<blockquote>
👉 Related: Free plugin to control which image sizes are generated by WordPress, check out <a href="https://wordpress.org/plugins/disable-media-sizes/" rel="ugc">Disable Media Sizes</a>.
</blockquote>
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 Responsive Images Complete 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/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 Responsive Images Complete

Light as feather and fixed our problem of WordPress "helping" us by serving an unoptimised, resized version of a PNG image that was 4x the size of the original. You'd think they'd just not add it if was larger.

Ace.

We had a client site that kept claiming their images were blurry. I was unable to duplicate it, but I figured it was due to the responsive images being output. I activated the plugin and could immediately spot the culprit. I figured there was a plugin with a reputable author that had a solution for this, so thank you so much for developing it.

Works Perfect

Completely disables WP responsive images.

jbd7

Embed Pro Flickr is a WordPress plugin designed to help you customize the Flickr images embedded on your website, especially when working with the Flickr Embed block inside the Gutenberg editor. 
It also takes cares of Flickr images embedded manually, especially before WordPress 5.0, ensuring consistency in the visitor experience, and without modifying the database.
It is aimed at Flickr photographers who are also WordPress bloggers, and particularly to those who have been using this combo over the years and seen breaking changes.
Expected impact:
<ul>
<li>Faster page load: visitors are only served the smallest image size necessary for their screen </li>
<li>More visually appealing: higher resolution images are made available to the browser, for example to visitors with Retina screens, thanks to the image sizes already processed by Flickr </li>
<li>Ensures visual consistency between images embedded manually from Flickr, images embedded using the Caption shortcode and images embedded using the Flick Embed block</li>
<li>Increased SEO by automatically using Flickr metadata to set titles and captions</li>
</ul>
Plugin features:
<ul>
<li>Systematically add classes to Flickr Embed blocks</li>
<li>Customize what happens when clicking on an image embedded with the Flickr Embed block </li>
<li>Assign the Flickr photo title to the tag</li>
<li>Make the Flickr photo page URL open in a new window</li>
<li>Automatically add a caption with the Flickr image title, and optionally hyperlink it</li>
<li>Make Flickr images responsive with <code>srcset</code> and <code>sizes</code> attributes, just like native WordPress images, improving the website loading time while serving better images to visitors. </li>
<li>Replace the hyperlinked Flickr page with the JPG image</li>
<li>Wrap lone <code><img></code> tags inside <code><figure></code> tags</li>
<li>Responsify caption shortcodes with fixed width, used in older version of WordPress</li>
</ul>
Plugin chracteristics:
<ul>
<li>Does NOT create new image sizes</li>
<li>Does NOT modify the database to operate. However, for debugging purposes, it can clear up cached oEmbed meta_keys in <code>wp_postmeta</code> faster than the 24-hour default</li>
<li>Lightweight (one single PHP page)</li>
<li>Has no visible component on the front end</li>
<li>Does not increase the site response time, provided a caching plugin is used</li>
</ul>
<h3>Configuration</h3>
To configure plugin, go to ‘Settings’ -> ‘Embed Pro Flickr’ from the WordPress dashboard

Embed Pro Flickr

Embed Pro Flickr helps you customize Flickr photos embedded in your WordPress site, improving user experience, performance and SEO.

Disable Responsive Images Complete vs Embed Pro Flickr