Shane Bishop

<p>The S3 Image Optimizer will optimize all your images in 1-1,000+ Amazon S3 buckets using the EWWW Image Optimizer. Since EWWW IO integrates directly with plugins like WP Offload Media, S3 IO is generally for folks who use a solution other than WP Offload Media to put their images on S3. But, if you have 20 sites sharing an S3 bucket, or have lots of buckets, and you would want to optimize them all from one place instead of 20 different sites, this is the plugin for you.</p>
<p>S3 IO features a web-based bulk optimization process, and a WP-CLI interface for massive buckets. S3 IO works with any S3-compatible storage service including Linode, Backblaze B2 and Digital Ocean Spaces.</p>
<p>You may report security issues through our Patchstack Vulnerability Disclosure Program. The Patchstack team helps validate, triage and handle any security vulnerabilities. <a href="https://patchstack.com/database/vdp/s3-image-optimizer" rel="nofollow ugc">Report a security vulnerability.</a></p>
<h3>Credits</h3>
<p>Written by <a href="https://ewww.io" rel="nofollow ugc">Shane Bishop</a> with special thanks to my <a href="https://www.iamsecond.com/" rel="nofollow ugc">Lord and Savior</a>.</p>


S3 Image Optimizer

Compress images in Amazon S3 buckets using lossless and lossy optimization methods via the EWWW Image Optimizer.

Danila Vershinin

<p>This plugin clears OPcache after updating WordPress core, themes, and files.<br />
Unlike other plugins, it is also compatible with <a href="https://www.getpagespeed.com/server-setup/performance-friendly-wordpress-updates" rel="nofollow ugc">WordPress updates made by Linux cron</a>.</p>
<h3>Features</h3>
<ul>
<li>Automatic OPcache reset after plugin/theme/core updates</li>
<li>Clears both memory-based and file-based OPcache</li>
<li>Works with cron-based WordPress updates (CLI context)</li>
<li>WP-CLI commands for manual OPcache management</li>
<li>Zero external dependencies (optional cachetool support)</li>
</ul>
<h3>Configuration</h3>
<p>The plugin works automatically for web-based updates. For CLI-based updates (cron, WP-CLI), configure your PHP-FPM socket:</p>
<p><strong>Option 1: Create <code>.cachetool.yml</code> in your WordPress root:</strong></p>
<pre><code>adapter: fastcgi
fastcgi: /run/php-fpm/www.sock
</code></pre>
<p><strong>Option 2: Use cachetool binary</strong> (if installed in PATH)</p>
<h3>WP-CLI Commands</h3>
<p>Reset OPcache from the command line:</p>
<pre><code>wp opcache reset
</code></pre>
<p>Show OPcache status and statistics:</p>
<pre><code>wp opcache status
</code></pre>
<p>Output status as JSON:</p>
<pre><code>wp opcache status --format=json
</code></pre>


OPcache Reset

Automatic OPcache reset for WordPress. Invalidates both in-memory and file-based OPCache upon upgrading WordPress.

S3 Image Optimizer vs OPcache Reset