wpstoriesorg

Stories Image Optimizer automatically converts your uploaded images to next-generation WebP or AVIF format, providing better compression while maintaining quality.
Features:
<ul>
<li>Automatic conversion on upload to Media Library</li>
<li>Support for WebP and AVIF formats</li>
<li>Configurable quality settings for each format</li>
<li>Automatic image resizing based on max dimensions</li>
<li>EXIF/metadata stripping for smaller file sizes</li>
<li>Bulk optimization for existing images</li>
<li>Fallback from Imagick to GD Library</li>
<li>Keeps original files as backup (optional)</li>
</ul>
Why use WebP/AVIF?
<ul>
<li>WebP – 25-35% smaller than JPEG with similar quality. Supported by all modern browsers.</li>
<li>AVIF – 50% smaller than JPEG with better quality. Supported by Chrome, Firefox, and Edge.</li>
</ul>
How It Works:
<ol>
<li>Upload an image to WordPress Media Library</li>
<li>The plugin automatically converts it to your chosen format (WebP or AVIF)</li>
<li>All generated thumbnails are also converted</li>
<li>The converted file replaces the original in your content</li>
</ol>
System Requirements:
<ul>
<li>PHP 7.4 or higher</li>
<li>WordPress 6.0 or higher</li>
<li>GD Library with WebP support, OR</li>
<li>Imagick extension (recommended for best performance)</li>
</ul>

Stories Image Optimizer

Automatically convert images to WebP or AVIF on upload for better quality and smaller file sizes.

James John

This plugin converts base64 encoded inline images to an absolute URL by; uploading inline image into WordPress directory. This happens when a post is saved.
It converts this: 
 <code><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Red dot" /></code>
To this: 
 <code><img src="https://site.com/wp-content/uploads/2021/05/post_title_id_no.png" alt="Red dot" /></code>
I was working on an external editor to allow users to post on WordPress, this editor embeds images in base64 encoded format. This makes post contents too long to load on-page and also cannot be stored on buffer unless PHP is set to very high memory usage.
This plugin converts the encoded base64 inline images to a link by scrapping out the base64, decode, store to file and replace with the URL. The post content becomes very short. This is over-engineered to prevent PHP memory limit when trying to copy base64 encode to file. This plugin will perform each chunk copy on 76 characters, 76 bytes. This is the base64 line limit. There will never be an out of memory when copying these images. 
And, it is faster than using regex

ImageBase642File

An over-engineered-memory-safe search and replace base64 inline images to an uploaded URL when a post is saved.

Stories Image Optimizer vs ImageBase642File