Freemius

Harv

<p>Harvify Image Optimizer helps WordPress administrators convert Media Library images to modern WebP and AVIF formats without running heavy compression work inside PHP.</p>
<p>The plugin scans lightweight attachment metadata first, then your browser converts selected images in a small queue. Images are processed with Web Workers and OffscreenCanvas where available, uploaded back through authenticated WordPress REST API requests, and released from browser memory as each item finishes.</p>
<p>This client-side approach is designed for shared hosting environments where PHP memory limits and execution timeouts can interrupt large image optimization jobs.</p>
<h4>Key features</h4>
<ul>
<li>Convert JPEG, PNG, WebP, and AVIF source images to WebP or AVIF.</li>
<li>Scan one source format at a time so existing target-format images are not accidentally reprocessed.</li>
<li>Select a few images for a test run before processing the full queue.</li>
<li>Skip small files, very large images, selected upload paths, or filename patterns.</li>
<li>Deliver Pro sidecar variants through PHP picture tags when available.</li>
<li>Adjust quality and queue concurrency from the admin screen.</li>
<li>Save queue state in the browser with IndexedDB so work can resume after interruption.</li>
<li>Keep wp-admin responsive by doing conversion work in browser workers.</li>
<li>Process images locally in your browser without using an external optimization API.</li>
<li>Optional original-file deletion, disabled by default.</li>
</ul>
<h4>Privacy and external services</h4>
<p>Harvify Image Optimizer does not send images to a third-party compression service, load scripts from external CDNs, or track usage. Images are fetched by your browser from your own WordPress site and uploaded back to your own WordPress REST API.</p>
<p>AVIF encoding uses bundled WebAssembly encoder files. The current AVIF path uses the Apache-2.0 licensed @jsquash/avif single-thread encoder, with the earlier bundled wasm-avif encoder retained as a local fallback.</p>
<h4>Format testing</h4>
<p>If you want to experiment with AVIF conversion outside your WordPress Media Library first, you can use this browser-based test tool:</p>
<p><a href="https://conversores.online/en/avif-to-png-converter/" rel="nofollow ugc">AVIF to PNG Converter</a></p>


Harvify Image Optimizer for WebP and AVIF

Convert Media Library images to WebP or AVIF locally in your browser.

WPS.sk

Dušan

<p>Image Optimizer by wps.sk optimizes images when uploading. Define the maximum image size and choose which file types should be converted to webp and what the compression or quality of the optimized image should be.</p>
<h4>Features</h4>
<ul>
<li>Retain or delete original images after optimization</li>
<li>Set image quality and WebP compression method</li>
<li>Convert specific image types to WebP</li>
<li>Automatically set image alt text based on filename</li>
<li>Define maximum width for uploaded images</li>
<li>Bulk image optimization</li>
</ul>
<h4>Settings</h4>
<ul>
<li>Go to Settings -> Image Optimizer by wps.sk in your WordPress dashboard. Here you can set the image quality, WebP compression method, and other options.</li>
</ul>


Image Optimizer by wps.sk

Optimizes images on upload. Define max. size and select the types of images to convert to webp and what quality the optimized image should have.

Harvify Image Optimizer for WebP and AVIF vs Image Optimizer by wps.sk