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

HEDEF Hosting

<p>Hedef Image Optimizer — WebP & AVIF is a lightweight but powerful image optimization plugin that converts your JPEG and PNG uploads into modern WebP and AVIF formats.</p>
<p>All conversions happen locally on your server using GD and/or Imagick – there is no external API, no remote storage and no extra monthly bills.</p>
<p>The plugin is developed and maintained by <a href="https://hedefhosting.com.tr/" rel="nofollow ugc">Hedef Hosting</a> and is provided completely free of charge.<br />
If you have ideas, bug reports or feature requests, feel free to email us at support@hedefhosting.com.tr.</p>
<p>It focuses on three main goals:</p>
<ul>
<li><strong>Better performance</strong> – Serve lighter images without visibly losing quality.</li>
<li><strong>Modern formats</strong> – Use WebP and AVIF when supported by your server and your visitors’ browsers.</li>
<li><strong>Simple control</strong> – Configure everything from a single, polished settings page.</li>
</ul>
<h3>Key Features</h3>
<ul>
<li>Automatically convert JPEG/JPG and PNG images to WebP and/or AVIF on upload.</li>
<li>Bulk optimization tool for existing Media Library images, with:
<ul>
<li>Progress bar and live log of processed items.</li>
<li>“Run again” support to refresh images after changing quality or resize settings.</li>
</ul>
</li>
<li>Media Library “Optimizer” column:
<ul>
<li>See per-image status, new filesize, and percentage of space saved.</li>
<li>One-click Re-optimize and Restore original actions (if you keep originals).</li>
</ul>
</li>
<li>Per-image controls in the attachment edit screen:
<ul>
<li>Optimize/Re-optimize just that image.</li>
<li>Override the global “Optimize on upload” setting.</li>
</ul>
</li>
<li>Server capabilities checker for GD / Imagick WebP and AVIF support.</li>
<li>Optional frontend integration using  tags with WebP/AVIF  elements:
<ul>
<li>Modern browsers get AVIF/WebP.</li>
<li>Older browsers fall back to the original image.</li>
</ul>
</li>
<li>Adjustable compression quality (0–100) with recommended ranges.</li>
<li>Optional resize of next-gen copies above a configurable max width (e.g. 2048px).</li>
<li>Optional EXIF/IPTC metadata stripping from next-gen copies to further reduce filesize.</li>
<li>Exclusion rules:
<ul>
<li>Skip specific images based on filename or path (e.g. logo, /icons/, avatar-).</li>
</ul>
</li>
<li>Works with:
<ul>
<li>WordPress Media Library</li>
<li>wp_get_attachment_image()</li>
<li>Featured images and most themes/page builders.</li>
</ul>
</li>
<li>Localization:
<ul>
<li>English (en_US)</li>
<li>Turkish (tr_TR) – full translation of the admin UI and bulk screens.</li>
</ul>
</li>
</ul>
<p>Everything is designed to blend nicely into the WordPress admin with a clean, modern UI.</p>
<h3>How It Works</h3>
<ol>
<li>When you upload a JPEG or PNG image, the plugin can automatically generate .webp and/or .avif versions (depending on your settings and server capabilities).</li>
<li>For existing images, use the <strong>Media <span aria-hidden="true" class="wp-exclude-emoji">→</span> Bulk Optimize (NGIO)</strong> screen to scan the Media Library and generate missing next-gen versions in small batches.</li>
<li>On the frontend, you can enable the  integration so that supported browsers will load AVIF / WebP, while older browsers still get the original image.</li>
<li>The plugin stores lightweight stats in attachment metadata (ngio) so you can see how much space you’ve saved on each image and across the library.</li>
</ol>
<h3>Requirements</h3>
<ul>
<li>PHP 8.1 or higher (for AVIF support through GD or Imagick).</li>
<li>WordPress 6.5 or higher.</li>
<li>One of:
<ul>
<li>PHP GD extension compiled with WebP/AVIF support.</li>
<li>PHP Imagick extension with WEBP/AVIF codecs enabled.</li>
</ul>
</li>
</ul>
<p>If your server is missing some of these, the <strong>Server support</strong> box on the settings page will clearly show what’s available and what is not.</p>
<h3>Usage</h3>
<h3>1. Choose formats and automation</h3>
<p>On the <strong>Settings <span aria-hidden="true" class="wp-exclude-emoji">→</span> Image Optimizer</strong> page:</p>
<ul>
<li>Enable WebP, AVIF, or both, depending on your server capabilities.</li>
<li>Turn on <strong>Optimize on upload</strong> if you want new images to be processed automatically.</li>
<li>Enable <strong>Serve via </strong> to send WebP/AVIF to compatible browsers.</li>
</ul>
<p>You can also:</p>
<ul>
<li>Pick a quality level (e.g. 80–85 for most sites).</li>
<li>Enable <strong>Resize next-gen copies</strong> and set a max width (e.g. 2048px).</li>
<li>Enable <strong>Strip metadata</strong> to remove EXIF/IPTC from generated copies.</li>
<li>Add <strong>Exclusion patterns</strong> (one per line) to skip specific images.</li>
</ul>
<h3>2. Bulk optimization</h3>
<p>Go to <strong>Media <span aria-hidden="true" class="wp-exclude-emoji">→</span> Bulk Optimize (NGIO)</strong>:</p>
<ul>
<li>Click <strong>Optimize all images</strong> to start the process.</li>
<li>The progress bar will move as images are processed.</li>
<li>The log will list each optimized attachment.</li>
<li>If you change quality or resize settings later, you can run bulk optimization again – existing next-gen copies will be refreshed.</li>
</ul>
<h3>3. Per-image controls</h3>
<p>In <strong>Media <span aria-hidden="true" class="wp-exclude-emoji">→</span> Library</strong> (list view):</p>
<ul>
<li>Use the <strong>Optimizer</strong> column to see:
<ul>
<li>Status (optimized/not optimized).</li>
<li>New filesize and percentage of space saved.</li>
<li>Links to Re-optimize and Restore original.</li>
</ul>
</li>
</ul>
<p>In the <strong>attachment edit screen</strong>:</p>
<ul>
<li>Use the <strong>NextGen optimization</strong> metabox to:
<ul>
<li>Optimize/re-optimize just that image.</li>
<li>Override the global “Optimize on upload” behaviour.</li>
</ul>
</li>
</ul>
<h3>License</h3>
<p>Hedef Image Optimizer — WebP & AVIF is free software released under the <strong>GNU General Public License v2.0 or later</strong>.<br />
You can redistribute it and/or modify it under the terms of the GPL as published by the Free Software Foundation.<br />
See https://www.gnu.org/licenses/gpl-2.0.html for the full license text.</p>


Hedef Image Optimizer — WebP & AVIF

Converts JPEG and PNG to modern WebP and AVIF formats, with bulk optimization and smart delivery.

Plus WebP or AVIF vs Hedef Image Optimizer — WebP & AVIF