wpaluchmits

<p><strong>MITS Image Optimizer</strong> is a professional image optimization toolkit for WordPress. It compresses images automatically on upload, batch-converts your entire media library to WebP and AVIF, configures Apache to serve next-gen formats automatically, and scans your site for common technical SEO issues.</p>
<h4>Features</h4>
<p><strong>Auto-Compress on Upload</strong><br />
Every JPG/PNG above a configurable size threshold is automatically scaled and compressed before WordPress generates its thumbnail sizes. No extra steps needed.</p>
<p><strong>Bulk Compression</strong><br />
Run a background batch job to compress all existing images in your media library. Progress is tracked and the job runs asynchronously — it won’t block your browser.</p>
<p><strong>WebP Converter</strong><br />
Batch-convert all JPG/PNG/GIF files in your uploads directory to WebP format. Runs in the background using WP-Cron or a loopback HTTP request. Supports both Imagick and GD libraries.</p>
<p><strong>AVIF Converter</strong><br />
Convert images to AVIF — the next-generation format that can be 30–50% smaller than WebP. Requires Imagick 7+ with AVIF support or PHP 8.1+ with GD <code>imageavif()</code>. The plugin detects support automatically and warns you if AVIF is unavailable on your server.</p>
<p><strong>Apache .htaccess Configuration</strong><br />
One click adds <code>mod_rewrite</code> rules to your <code>.htaccess</code> so Apache automatically serves <code>.webp</code> files to browsers that support them, with no code changes required in your theme.</p>
<p><strong>Image Dimensions Scanner</strong><br />
Detects images ≥ 1600 px wide that are used in posts or as featured images. Helps you find oversized images that slow down page loads, along with their file sizes, dimensions, and WebP/AVIF conversion status.</p>
<p><strong>Site Audit</strong><br />
Scans your site for the most common technical issues: missing alt text, oversized images, missing SSL, outdated plugins, pages without Open Graph tags, and more. Results include actionable recommendations.</p>
<p><strong>Dashboard Widget</strong><br />
A compact stats panel on the WordPress admin dashboard showing compression savings, WebP/AVIF conversion counts, and a link to the optimizer.</p>
<h4>Requirements</h4>
<ul>
<li>PHP 8.0+, WordPress 6.0+</li>
<li>GD or Imagick PHP extension (for WebP/compression)</li>
<li>Imagick 7+ with AVIF or PHP 8.1+ GD (for AVIF conversion)</li>
<li>Apache + <code>mod_rewrite</code> (for automatic WebP serving via <code>.htaccess</code>)</li>
</ul>
<p>Developed and maintained by <a href="https://mits.pl" rel="nofollow ugc">MITS</a> — a Polish web agency specializing in WordPress performance and development.</p>
<h4>Privacy</h4>
<p>This plugin does not collect any personal data and does not make any external HTTP requests.</p>


MITS Image Optimizer

Auto-compress images on upload, bulk convert to WebP & AVIF, manage .htaccess WebP serving, and audit your site — all in one plugin.

KeyCDN

<h4>WordPress Image Optimizer</h4>
<p>Optimus reduces the file size of uploaded media files automatically. Depending on the image and format, reductions in size of up to 70% are possible. Several kilobytes can be saved per image—these savings contribute positively to the performance of the blog website. What’s most impressive about the compression technology: the quality of the images is maintained.</p>
<blockquote>
<h4>There are three different versions of Optimus:</h4>
<ol>
<li><strong>Optimus</strong> <em>(Free)</em> as base version with limitations (e.g. max of 100kb)</li>
<li><strong>Optimus HQ</strong> <em>(Premium)</em> with expanded functionality for personal projects</li>
<li><strong>Optimus HQ PRO</strong> <em>(Premium)</em> as professional solution for customer websites</li>
</ol>
</blockquote>
<p>More details about the features and the pricing model on <a href="https://optimus.io" rel="nofollow ugc">optimus.io</a></p>
<h4>How does it work?</h4>
<p>During the uploading process of images to the media library, the <em>Optimus</em> plugin simultaneously sends the images to the <em>Optimus</em> server, where the incoming material is processed and sent back in optimized form. Afterwards, the <em>Optimus</em> plugin saves the image version with a reduced file size in the media library.</p>
<p>The optimization of images – <em>including thumbnails</em> – is conducted in the background and outside of the view of the user. The image compression gains per file are displayed by Optimus within the media library in form of a percentage value, see <a href="https://wordpress.org/plugins/optimus/screenshots/" rel="ugc">screenshot</a>.</p>
<p>Superfluous information that is saved by image processing programs and is not even necessary for displaying the image is extracted from image files. This way, the quality of the graphics remains intact while the image size can be reduced significantly. If you wish, Optimus keeps all author, EXIF and copyright information contained within the photos — the compressional gains will be correspondingly lower.</p>
<p>Optimus supports the conversion of images to the new <a href="https://www.keycdn.com/blog/convert-to-webp-the-successor-of-jpeg" rel="nofollow ugc"><em>WebP</em> image format</a>.</p>
<blockquote>
<p>It is recommended to use the <a href="https://wordpress.org/plugins/cache-enabler/" rel="ugc">WordPress Cache Enabler</a> plugin to integrate the converted WebP images.</p>
</blockquote>
<h4>Features</h4>
<ul>
<li><a href="https://www.keycdn.com/support/optimus/progressive-jpeg" rel="nofollow ugc">Progressive JPEGs</a></li>
<li>Reduction of file size during the upload</li>
<li>Optimization of all preview images of a photo</li>
<li>No adjustments to code necessary</li>
<li>Optional: no removal of EXIF and IPTC metadata</li>
<li>Optional: HTTPS connection for the image transfer (Optimus HQ)</li>
<li>Optional: <a href="https://www.keycdn.com/support/optimus/configuration-to-deliver-webp" rel="nofollow ugc">conversion to the WebP</a> image format (Optimus HQ)</li>
<li>Faster load times for blog pages</li>
<li>Support for WooCommerce</li>
<li>WordPress multisite-support</li>
<li><a href="https://www.keycdn.com/support/optimus/image-bulk-optimization" rel="nofollow ugc">Bulk optimization</a> (optimize existing images)</li>
</ul>
<h4>Privacy</h4>
<ul>
<li>After the image optimization and transfer process, the <em>Optimus</em> server immediately deletes all the temporarily stored files. No files are stored!</li>
<li>The Optimus servers are located in Germany.</li>
</ul>
<h4>Tips</h4>
<ul>
<li>Photos should always be saved as JPEGs rather than PNGs. The PNG format works well for illustrations, JPEG on the other hand is the right choice for photographs. Another reason: the size reduction always works more quickly for JPEGs.</li>
<li>Your images have been optimized using Desktop tools such as ImageOptim (Mac) or PNGGauntlet (Win) before you upload them? Optimus has the significant benefit of also minimizing the thumbnails (=preview images) created by WordPress. After all, themes almost always integrate thumbnails rather than original images.</li>
</ul>
<h4>System Requirements</h4>
<ul>
<li>PHP >=5.6</li>
<li>WordPress >=4.6</li>
<li>Allow outbound connections</li>
</ul>
<h4>Storage Utilization</h4>
<ul>
<li>Backend: ~ 0,19 MB</li>
<li>Frontend: ~ 0,01 MB</li>
</ul>
<h4>Website</h4>
<ul>
<li><a href="https://optimus.io" rel="nofollow ugc">optimus.io</a></li>
</ul>
<h4>Author</h4>
<ul>
<li><a href="https://www.keycdn.com" title="KeyCDN" rel="nofollow ugc">KeyCDN</a></li>
</ul>


Optimus – WordPress Image Optimizer

Effective image compression and optimization during the upload process. Smart, automatic and reliable.

MITS Image Optimizer vs Optimus – WordPress Image Optimizer