Convert images to WebP and replace originals—no duplicates. Save storage and speed up your site. Auto-convert on upload & bulk tools (premium).

Codexpert, Inc

Nazmul Ahsan

Pluggable IO

ThumbPress

ThumbPress – Compress Images, Manage Thumbnails, Detect Image Issues, WebP/AVIF, Lazy Loading, Hotlinking & More

The all-in-one WordPress image optimization plugin. Disable thumbnails, compress images, convert to WebP & AVIF, clean your media library, and more.

Hoatzinlabs

HoatzinMedia — Media Cleaner & Storage Optimizer

Smart media cleaner: detect unused files, duplicates and large attachments; optimize storage safely.

Core Essentials

WebP Image Converter & Replacer converts your images (JPEG, PNG, static GIF) to WebP, replaces originals only when smaller, and updates database references so your site transparently serves <code>.webp</code>. No duplicate files. No front-end bloat. Just faster pages and less disk usage.
Why this plugin 
– No Duplicate Images: Converts and replaces originals when WebP is smaller, keeping <code>/uploads</code> lean. 
– Real Performance Gains: WebP typically reduces size ~25–35% at similar quality, aiding Core Web Vitals. 
– Safety First: Never deletes the original unless conversion succeeds and the WebP is smaller. 
– Full DB Integration: All generated sizes are converted; URLs in content/meta are updated to <code>.webp</code>. 
– On-Server Only: Uses PHP GD or Imagick. No external API, keys, or privacy concerns. 
– Lightweight: Runs only during conversion—nothing extra on the front end.
Free features 
– Convert individual images from Media → Library (list view). 
– Optimization Overview with counts: convertible, converted, remaining, skipped, failed, total space saved. 
– Smart memory handling to avoid PHP exhaustion on large images.
Premium features 
– Auto-convert on upload: New images become WebP automatically. 
– Bulk convert selected: Multi-select in Media Library (list view). 
– Bulk convert all: Library-wide conversion with progress + pause/resume.
<blockquote>
Whether you’re tight on storage or chasing better performance, this is a safe, effective way to modernize images.
</blockquote>
IMPORTANT: Because originals may be deleted, back up your <code>/wp-content/uploads/</code> and database before converting. Test on staging if possible.
<h3>How it works</h3>
<ol>
<li>Plugin checks server support (GD/Imagick with WebP).</li>
<li>You convert images (single/bulk/premium auto).</li>
<li>If the <code>.webp</code> is smaller, the original file is removed and all DB refs switch to <code>.webp</code>.</li>
<li>Your site now serves WebP transparently—no theme changes required.</li>
</ol>
<h3>Usage</h3>
Optimization Overview 
– Settings → Media → “WebP Image Converter & Replacer” 
– See totals converted/remaining/skipped/failed and space saved.
Convert individual images 
– Media → Library (list view) → Convert to WebP link under each item.
Premium 
– Auto-convert on upload: toggle under Settings → Media. 
– Bulk convert selected: select items in Media Library (list view) → bulk action Convert to WebP. 
– Bulk convert all: Start Bulk Optimization with progress + pause/resume.
After conversion 
– Verify pages serve <code>.webp</code> in browser dev tools. 
– Clear any caches/CDN.
<h3>Phoenix Media Rename Integration</h3>
We integrate with <a href="https://en-gb.wordpress.org/plugins/phoenix-media-rename/" rel="nofollow ugc">Phoenix Media Rename</a> to safely update all database references.
Why Phoenix? 
– Mature, reliable database URL updates across posts, custom fields, widgets, Customizer, etc. 
– Reduces risk vs. “DIY” find/replace logic used by other optimizers. 
– Lets this plugin focus on conversion while Phoenix handles DB updates.
Flow 
1. Convert to WebP. 
2. Phoenix updates URLs from <code>.jpg/.png/.gif</code> to <code>.webp</code>. 
3. Your site serves WebP with no broken links.

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