Stintlief Technologies

<p>Stintlief WebP Converter automatically converts uploaded JPEG, PNG, and GIF images to the modern WebP format, providing significant file size reductions while maintaining visual quality. The plugin includes smart features to ensure safety and reversibility.</p>
<h4>Key Features</h4>
<ul>
<li><strong>Automatic Conversion</strong>: Converts images to WebP on upload without manual intervention</li>
<li><strong>Smart Size Comparison</strong>: Only keeps WebP if it’s smaller than the original (configurable)</li>
<li><strong>Safe Backups</strong>: Optional automatic backup of original files for easy restoration</li>
<li><strong>One-Click Restore</strong>: Restore original images from attachment edit screen</li>
<li><strong>Animated GIF Protection</strong>: Automatically skips animated GIFs to preserve animation</li>
<li><strong>Configurable Settings</strong>: Control max dimensions, compression quality, and behavior</li>
<li><strong>No External Services</strong>: All processing happens on your server – no data sent elsewhere</li>
<li><strong>Performance Boost</strong>: WebP images are typically 25-35% smaller than JPEG/PNG</li>
</ul>
<h4>Privacy & Data Handling</h4>
<p>This plugin does not:<br />
* Send any data to external servers<br />
* Store personal user information<br />
* Track users or create logs (except standard WordPress debug logs when WP_DEBUG is enabled)<br />
* Use cookies or external APIs</p>
<p>Backup files (if enabled) are stored locally on your server in the uploads directory and are not publicly exposed unless explicitly accessed.</p>
<h4>Supported Image Formats</h4>
<ul>
<li>JPEG (.jpg, .jpeg)</li>
<li>PNG (.png)</li>
<li>GIF (.gif) – static only, animated GIFs are preserved</li>
<li>HEIC/HEIF (if server supports)</li>
</ul>
<h4>Requirements</h4>
<p>Your server must have one of the following:<br />
* Imagick extension with WebP support<br />
* GD extension with WebP support</p>
<p>The plugin will display a notice if WebP support is not available.</p>
<h3>Privacy Policy</h3>
<p>This plugin does not collect, store, or transmit any personal data. All image processing happens locally on your WordPress server. Backup files (if enabled) are stored in your uploads directory and are not shared or transmitted to external services.</p>
<p>If you have privacy requirements, you can disable the backup feature in Settings <span aria-hidden="true" class="wp-exclude-emoji">→</span> Media.</p>
<h3>Credits</h3>
<p>Developed by Stintlief Technologies with a focus on performance, safety, and WordPress best practices.</p>


Stintlief WebP Converter

Automatically convert uploaded images to optimized WebP format with safe fallbacks, optional backups, and easy restoration.

saguya

<p>Welcome to <strong>Henkan</strong> (Japanese for “conversion”) — your lightweight, high-performance solution for next-generation image optimization in WordPress!</p>
<p>Slow loading times and heavy images are a thing of the past. Henkan seamlessly integrates into your WordPress dashboard, silently converting your standard JPEGs and PNGs into highly optimized <strong>WebP</strong> or <strong>AVIF</strong> files. Boost your Core Web Vitals, improve your SEO rankings, and save massive amounts of server bandwidth without sacrificing an ounce of image quality.</p>
<h3>✨ Why choose Henkan?</h3>
<p>Most image optimizers rely on slow PHP processing or expensive cloud APIs with monthly limits. Henkan is built differently: It prioritizes <strong>native OS binaries</strong> (<code>cwebp</code>, <code>avifenc</code>) to process images blazingly fast directly on your own server, completely free and without any restrictions.</p>
<h3>🚀 Powerful Features</h3>
<ul>
<li><strong>Next-Gen Formats:</strong> Instantly convert images to WebP and AVIF formats.</li>
<li><strong>Zero-Config Auto-Conversion:</strong> New images are optimized silently in the background the moment you upload them.</li>
<li><strong>1-Click Bulk Optimization:</strong> Got a massive existing media library? Process thousands of images with a single click in our beautiful, modern dashboard.</li>
<li><strong>Smart Fallbacks:</strong> Uses ultra-fast <code>exec()</code> binaries when available, falling back to GD or ImageMagick seamlessly if needed.</li>
<li><strong>Cache Auto-Clear:</strong> Fully compatible with WP Rocket, W3 Total Cache, Autoptimize, and LiteSpeed Cache. Conversions automatically trigger a cache purge.</li>
<li><strong>Frontend Delivery:</strong> Automatically serves the optimized images to compatible browsers using modern HTML <code><picture></code> tags or Nginx/Apache rewrites.</li>
<li><strong>WP-CLI Power:</strong> Built-in commands (<code>wp henkan convert</code>) for sysadmins to process massive libraries directly from the terminal without PHP timeouts.</li>
<li><strong>Global Ready:</strong> 100% translation-ready. Shipped with English, German (<code>de_DE</code>), and Japanese (<code>ja</code>) out of the box.</li>
</ul>
<h3>🛠️ System Requirements</h3>
<p>To unleash the full speed of Henkan, we recommend:<br />
* <strong>WordPress:</strong> 6.0 or higher<br />
* <strong>PHP:</strong> 7.4 or higher<br />
* <strong>For WebP:</strong> <code>cwebp</code> installed on the server (recommended) OR PHP <code>GD</code> extension with WebP support.<br />
* <strong>For AVIF:</strong> <code>avifenc</code> or <code>ImageMagick</code> (magick/convert) installed OR PHP <code>GD</code> extension with AVIF support.</p>


Henkan – WebP & AVIF Converter

Henkan is a high-performance plugin that automatically converts your media library images to next-generation formats like WebP and AVIF.

Stintlief WebP Converter vs Henkan – WebP & AVIF Converter