Katsushi Kawamori

<h4>Generate WebP or AVIF</h4>
<ul>
<li>Generate WebP or AVIF file when adding image file in Media Library.</li>
<li>Generate WebP or AVIF from all the images by async/await.</li>
<li>Optionally, Can replace image files with WebP or AVIF when adding new media, and delete the original image file. Also, when generating all images, the original image file ID will be overwritten as WebP or AVIF and the original image file will be deleted. All URLs in the content are also replaced.</li>
</ul>
<h4>WP-CLI</h4>
<p>WP-CLI commands are available. If you have a large number of files, WP-CLI commands is more reliable.<br />
* <code>wp pluswebpavif</code><br />
* <code>wp pluswebpavif webp</code> -> Generated WebP.<br />
* <code>wp pluswebpavif avif</code> -> Generated AVIF.<br />
* <code>wp pluswebpavif help</code> -> Specification of this command.<br />
* <code>wp pluswebpavif webp mail</code> -> Send results via email.<br />
* <code>wp pluswebpavif webp replace</code> -> WebP or AVIF replacement of images and contents.<br />
* <code>wp pluswebpavif avif addext</code> -> Append the webp or avif extension to the original filename.<br />
* <code>wp pluswebpavif webp --pid=12152</code> -> Process only specified Media ID(Conversion source ID).<br />
* <code>wp pluswebpavif avif --quality=90</code> -> Specifies the quality of WebP or AVIF.<br />
* <code>wp pluswebpavif webp --types=image/png,image/gif</code> -> MIME type to convert.</p>
<h4>How it works</h4>
<span class="embed-youtube" style="text-align:center; display: block;"><iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/EIheJryR7j0?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe></span>
<h4>Filter hooks</h4>
<pre><code>/** ==================================================
 * Filter for advanced change database.
 * If you want to replace other databases besides content.
 */
add_filter(
    'plus_webp_advanced_change_db',
    function( $before_url, $after_url ) {
        /* Your processing */
        return array( $before_url, $after_url );
    },
    10,
    2
);
</code></pre>


Plus WebP or AVIF

It is very useful to replace the URLs of images of existing content as well.

Easy and very useful


I really like this plugin and it's very good in other aspects. However, on both of my websites, when converting in bulk, I was unable to continue the conversion for a certain period of time, indicating an Ajax 500 error. What is the reason?


500 error


This is great plugin to save my server space!



Dear developer, I prefer to donate by paypal, usdt or stripe instead of inputting my credit card elsewhere.


Great plugin

selectpakistan

<p><strong>Select Pakistan Image Optimizer</strong> is a powerful, completely free WordPress plugin that automatically converts your images to next-generation WebP and AVIF formats, significantly reducing file sizes while maintaining quality.</p>
<p>🚀 <strong>100% FREE – No limits, no subscriptions, no API keys required!</strong></p>
<h4>Why WebP & AVIF?</h4>
<ul>
<li><strong>WebP</strong>: Up to 30% smaller than JPEG with same quality. Supported by 97%+ browsers.</li>
<li><strong>AVIF</strong>: Up to 50% smaller than JPEG. The most efficient image format available.</li>
</ul>
<h4>Key Features</h4>
<p>✅ <strong>Automatic Conversion</strong> – Convert images on upload automatically<br />
✅ <strong>Bulk Optimization</strong> – Optimize your entire media library with one click<br />
✅ <strong>Multiple Formats</strong> – Support for WebP, AVIF, or both<br />
✅ <strong>Multiple Methods</strong> – GD Library, ImageMagick, and CLI tools support<br />
✅ <strong>Browser Detection</strong> – Serve the right format to each visitor<br />
✅ <strong>Quality Control</strong> – Adjustable quality settings (1-100%)<br />
✅ <strong>Keep Originals</strong> – Your original images are always safe<br />
✅ <strong>Lazy Loading</strong> – Built-in native lazy loading support<br />
✅ <strong>CDN Compatible</strong> – Works with Cloudflare, BunnyCDN, AWS CloudFront<br />
✅ <strong>Server Config</strong> – Auto-generate .htaccess/Nginx rules<br />
✅ <strong>Statistics Dashboard</strong> – Track your savings and conversions<br />
✅ <strong>Detailed Logs</strong> – Complete conversion history with export<br />
✅ <strong>WP-CLI Support</strong> – Command line tools for developers<br />
✅ <strong>REST API</strong> – Full API access for automation<br />
✅ <strong>Multisite Ready</strong> – Network-wide support<br />
✅ <strong>Clean Uninstall</strong> – Remove all data when uninstalling</p>
<h4>Conversion Methods</h4>
<p>The plugin automatically selects the best available method on your server:</p>
<ol>
<li><strong>GD Library</strong> – Built into PHP, widely available</li>
<li><strong>ImageMagick</strong> – Professional image processing</li>
<li><strong>CLI Tools</strong> – cwebp and avifenc for maximum performance</li>
</ol>
<h4>How It Works</h4>
<ol>
<li>Install and activate the plugin</li>
<li>Configure your preferred settings</li>
<li>New images are automatically converted on upload</li>
<li>Use bulk optimization for existing images</li>
<li>The plugin serves the optimized version to supported browsers</li>
</ol>
<h4>Perfect For</h4>
<ul>
<li>Blogs and news sites with lots of images</li>
<li>WooCommerce stores with product photos</li>
<li>Photography portfolios</li>
<li>Any WordPress site wanting faster load times</li>
</ul>
<h4>Developer Friendly</h4>
<ul>
<li>Well-documented REST API</li>
<li>WP-CLI commands for automation</li>
<li>Hooks and filters for customization</li>
<li>WordPress Coding Standards compliant</li>
</ul>
<h4>About Select Pakistan</h4>
<p>SelectPress Image Optimizer is developed by <a href="https://selectpakistan.com" rel="nofollow ugc">Select Pakistan</a>, a leading web development company. We’re committed to providing quality WordPress plugins that are accessible to everyone.</p>
<h3>Technical Requirements</h3>
<ul>
<li>WordPress 5.8 or higher</li>
<li>PHP 7.4 or higher (PHP 8.0+ recommended)</li>
<li>GD Library or ImageMagick extension</li>
<li>For AVIF: PHP 8.1+ with GD AVIF support, or ImageMagick 7+ with AVIF support</li>
</ul>
<h3>Support</h3>
<ul>
<li><a href="https://selectpakistan.com/plugins/selectpress-image-optimizer/docs" rel="nofollow ugc">Documentation</a></li>
<li><a href="https://wordpress.org/support/plugin/selectpress-image-optimizer/" rel="ugc">Support Forum</a></li>
<li><a href="https://github.com/selectpakistan/selectpress-image-optimizer" rel="nofollow ugc">GitHub</a></li>
</ul>
<h3>Credits</h3>
<p>Developed with ❤️ by <a href="https://selectpakistan.com" rel="nofollow ugc">Select Pakistan</a></p>
<h3>Privacy</h3>
<p>SelectPress Image Optimizer:<br />
* Does NOT send any data to external servers<br />
* Does NOT require API keys or registration<br />
* Does NOT track users<br />
* Processes all images locally on your server</p>


Select Pakistan Image Optimizer — WebP & AVIF Converter

Convert images to WebP & AVIF formats for faster websites. 100% Free, no limits, bulk conversion.

Plus WebP or AVIF vs Select Pakistan Image Optimizer — WebP & AVIF Converter