StashPress : WebP Image Conversion
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Scan your Media Library and convert JPG/PNG/GIF images to WebP for faster page loads — without touching your originals.
- One-click bulk scan and convert of your entire Media Library, in safe small batches so it works even on shared hosting.
- Converts the full-size image plus every registered thumbnail size (thumbnail, medium, large, etc.).
- Auto-converts every new image the moment it’s uploaded.
- Adjustable quality slider (default 82 — a strong quality/size balance).
- Originals are never deleted; .webp files are created alongside them.
- On the frontend, visitors whose browser supports WebP are automatically served the .webp version; everyone else still gets the original — no broken images, ever.
- Works with GD or Imagick, whichever your server has.