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

Nitin Singh

<p><strong>Image Ninja – Convert Images to WebP & AVIF on Upload</strong> is a lightweight WordPress plugin that automatically converts JPEG and PNG images to modern WebP and AVIF formats upon upload. The plugin improves website performance by optimizing image file sizes without compromising quality, leading to faster page loading times.</p>
<h3>Key Features</h3>
<ul>
<li>Automatically converts JPEG and PNG images to WebP and AVIF formats during upload.</li>
<li>Allows configuration of WebP and AVIF image quality in the settings.</li>
<li>Enhances website performance by reducing image file sizes.</li>
<li>Simple settings interface under <code>Settings > Media</code> for easy customization.</li>
<li>Lightweight and developer-friendly codebase.</li>
</ul>
<p>This plugin is ideal for website owners looking to improve load times and optimize image delivery, especially on mobile devices and slow connections.</p>
<h3>Why WebP?</h3>
<p>WebP is a modern image format developed by Google that provides both lossy and lossless compression for images on the web. Here are some benefits of using WebP:</p>
<ul>
<li><strong>Smaller File Size</strong>: WebP images can be up to 30% smaller than JPEGs and PNGs with no noticeable loss in quality, resulting in faster page load times.</li>
<li><strong>Transparency and Animation</strong>: WebP supports transparent backgrounds like PNG and animated images like GIF, making it a versatile choice.</li>
<li><strong>Improved Compression</strong>: WebP offers better compression algorithms compared to traditional formats, allowing for high-quality images with lower storage requirements.</li>
</ul>
<h3>Why AVIF?</h3>
<p>AVIF (AV1 Image File Format) is a cutting-edge image format derived from the AV1 video codec, offering even better compression than WebP. Here’s why AVIF is beneficial:</p>
<ul>
<li><strong>High Compression Efficiency</strong>: AVIF can reduce image sizes by up to 50% compared to JPEG, while maintaining similar or even higher visual quality.</li>
<li><strong>HDR Support</strong>: AVIF supports High Dynamic Range (HDR), allowing for more vibrant and detailed images, especially on modern displays.</li>
<li><strong>Advanced Features</strong>: It includes support for transparency, animation, and a wider color gamut, making it suitable for various types of web content.</li>
</ul>
<h3>License</h3>
<p>This plugin is licensed under the GPLv2 or later license.</p>


Image Ninja – Convert Images to WebP & AVIF on Upload

Automatically convert JPEG and PNG images to WebP and AVIF formats during upload to optimize your WordPress site’s performance.

Plus WebP or AVIF vs Image Ninja – Convert Images to WebP & AVIF on Upload