CaphLabs

Keep Originals Safe, convert JPEG/PNG images to WebP and makes WebP the canonical file. WP returns <code>.webp</code> URLs, Keeping originals safely archived.
<h3>How it works (high level)</h3>
<ol>
<li>
Convert
<ul>
<li>For a JPG/PNG attachment, the plugin generates a WebP for the full image and all WordPress-generated sizes.</li>
<li>Conversion is done through WordPress’ image editor system (WP_Image_Editor), meaning it uses GD or Imagick (whichever your server supports) with WebP support enabled.</li>
</ul>
</li>
<li>
Move originals
<ul>
<li>The original JPG/PNG files are moved to:
<ul>
<li><code>wp-content/uploads/_originals/...</code></li>
</ul>
</li>
<li>The folder structure mirrors your uploads structure.</li>
</ul>
</li>
<li>
Update WordPress to serve WebP
<ul>
<li>Attachment “file” + metadata are updated so WordPress serves <code>.webp</code> as the attachment file.</li>
<li>Attachment mime type is updated to <code>image/webp</code>.</li>
</ul>
</li>
<li>
Optional: Replace old URLs everywhere
<ul>
<li>If enabled, the plugin can replace old <code>.jpg/.png</code> URLs across:
<ul>
<li>post content</li>
<li>postmeta</li>
</ul>
</li>
<li>Replacement is serialized-safe (does not break serialized arrays).</li>
</ul>
</li>
</ol>
<h3>Background jobs (keeps running after page reload)</h3>
Conversion/repair/sweep jobs are designed to run in the background. They keep ticking even if you refresh the page or close the tab.
The plugin uses multiple loopback methods (admin-post / REST / public tick fallback) so it can keep working even on restrictive hosting setups.
<h3>Log + “it looks frozen” note</h3>
A rolling “terminal style” log is written to: 
– <code>wp-content/uploads/hsbc-webp-only/logs/webp-only.log</code>
If the log appears to freeze in the admin page: 
– click Refresh Log, or 
– refresh the page
The job may still be running server-side; refreshing the log/page usually catches up.
<h3>Usage</h3>
Go to Media → WebP Only.
<h3>Settings</h3>
<ul>
<li>Quality
<ul>
<li>WebP quality for conversion (0–100).</li>
</ul>
</li>
<li>Batch size
<ul>
<li>How many items to process per tick. Smaller batches reduce server load.</li>
</ul>
</li>
<li>Replace old .jpg/.png URLs across content + postmeta (serialized-safe)
<ul>
<li>Recommended if your site content contains hard-coded image URLs.</li>
</ul>
</li>
<li>Sweep Include / Exclude
<ul>
<li>Used by the Sweep tools to control which folders are scanned.</li>
</ul>
</li>
</ul>
<h3>Conversion Jobs (buttons)</h3>
Start Bulk Convert 
– Converts Media Library attachments (JPG/PNG) in batches. 
– Moves originals to <code>uploads/_originals/</code>. 
– Updates attachment metadata so WordPress serves <code>.webp</code>. 
– Optional URL replacement (content + postmeta).
Start Repair/Cleanup 
– Repairs inconsistencies if something was partially converted or moved. 
– Useful after restores/migrations or if some attachments have mismatched metadata. 
– Optional URL replacement.
Start Folder Sweep 
– Scans the filesystem for eligible images (based on your Sweep Include/Exclude rules). 
– Designed for sites with additional image folders beyond standard uploads. 
– Optional URL replacement.
Stop Job 
– Stops the currently running job.
<h3>Maintenance / Cleanup (buttons)</h3>
Delete duplicate _originals 
– Deletes backup files in <code>uploads/_originals/</code> *only when* an identical file already exists in <code>uploads/</code>. 
– This is a cleanup tool for situations where originals were restored back into uploads and you no longer need the archived duplicate.
Delete duplicate _webp 
– Removes orphaned WebP cache files in: 
 – <code>uploads/_webp/</code> 
– Only deletes WebP files that no longer match anything in <code>uploads/</code> or <code>uploads/_originals/</code>.
Delete duplicate sweep _originals 
– Maintenance cleanup for non-uploads roots (folders under <code>wp-content/</code>) that contain their own <code>_originals/</code> folders. 
– It uses your Sweep Include list to find those roots. 
– Only deletes a file from <code><root>/_originals/</code> when the same file exists at <code><root>/</code> AND the file size matches (safe duplicate).
Revert Everything 
– Restores original JPG/PNG files from <code>uploads/_originals/</code> back into <code>uploads/</code>. 
– Reverts attachment metadata so WordPress serves the originals again.
<h3>Log controls</h3>
Refresh Log 
– Pulls the latest log tail into the admin screen.
Reset Log 
– Clears the log file.
<h3>Requirements</h3>
<ul>
<li>WordPress’ image editor must support WebP.
<ul>
<li>GD with WebP support, or</li>
<li>Imagick with WebP support</li>
</ul>
</li>
<li>If WebP conversion is not supported on your server, conversion/repair/sweep will refuse to run (revert tools can still work).</li>
</ul>

OrigiSafe — Advanced Image Optimizer (WebP) — Keep Originals Safe

Convert JPG/PNG uploads (and existing library) to WebP, move originals to /uploads/_originals/, and update Media Library metadata - WP serves .webp

Pluginjoy

MediaSpark is image optimization for people who are tired of bloated optimizer plugins that hold half the features hostage behind email walls, fake “free” trials, and persistent banner ads inside wp-admin.
No banner ads. No “register your email to continue” wall. No forced signup before you can compress a single image. Install, activate, done.
<h3>Why MediaSpark exists</h3>
We mined hundreds of 1-star reviews of the popular “Smush”-style optimizers. The same complaints kept coming up:
<ul>
<li>“Half the features now require a paid account I never asked for.”</li>
<li>“After the latest update I have to give them my email just to use what I already had.”</li>
<li>“Banner ads inside my own admin panel.”</li>
<li>“Settings page got worse, not better.”</li>
</ul>
MediaSpark is the opposite of that. Filter-only architecture — every behavior is a WordPress filter you can hook, override, or disable. No telemetry. No phone-home. No upsell modals.
<h3>What you get for free</h3>
<ul>
<li>WebP + AVIF generation with quality tuning</li>
<li>AI alt-text for every image you upload — SEO-friendly, multilingual (30+ languages)</li>
<li>Bulk image compression for your existing library</li>
<li>Lazy loading with native browser hints (no jQuery, no layout shift)</li>
<li>Media folders + tags to keep a large library navigable</li>
<li>Bulk edit alt text, folders, tags across hundreds of files at once</li>
<li>Analytics dashboard showing total / used / unused media</li>
<li>WooCommerce-aware — product galleries, variation images, shop pages</li>
</ul>
<h3>Pro version — Premium AI included</h3>
<a href="https://pluginjoy.com/product/mediaspark-pro/" rel="nofollow ugc">MediaSpark Pro</a> adds AI tagging, image watermarking, advanced compression profiles, and CDN-ready URLs. Powered by Claude Sonnet 4.6 — no API keys to wire up.
Premium AI credits included with every Pro plan (50 / 200 / 1000 per month). Credits are shared with <a href="https://wordpress.org/plugins/a11y-enhancer/" rel="ugc">SiteFix Pro</a> and <a href="https://wordpress.org/plugins/clarity-seo/" rel="ugc">Clarity SEO Pro</a> on the same PluginJoy account. Top-up packs available, credits never expire.
<ul>
<li>Priority support — 24-hour response on business days</li>
<li>30-day money-back guarantee</li>
<li>Pricing from €9.95/mo — see <a href="https://pluginjoy.com/product/mediaspark-pro/" rel="nofollow ugc">pricing page</a></li>
</ul>
<h3>Sister plugins</h3>
MediaSpark is one of five free PluginJoy plugins on WordPress.org, all sharing the same filter-only architecture and AI credit pool when you upgrade:
<ul>
<li><a href="https://wordpress.org/plugins/clarity-seo/" rel="ugc">Clarity SEO</a> — AI-era SEO + answer engine optimization</li>
<li><a href="https://wordpress.org/plugins/a11y-enhancer/" rel="ugc">SiteFix</a> — accessibility (WCAG 2.2 AA) with AI fixes</li>
<li><a href="https://wordpress.org/plugins/safesnap/" rel="ugc">SafeSnap</a> — one-click backups</li>
<li><a href="https://wordpress.org/plugins/global-time-ghost/" rel="ugc">Global Time Ghost</a> — multi-timezone scheduling</li>
</ul>

MediaSpark – AI Image Optimization, WebP, AVIF & Alt Text

Filter-only WordPress image optimization. AVIF + WebP. AI alt-text in 30+ languages. Free, forever. Pro from €9.95/mo.

OrigiSafe — Advanced Image Optimizer (WebP) — Keep Originals Safe vs MediaSpark – AI Image Optimization, WebP, AVIF & Alt Text