WebP Converter.
A Mac app that bulk-converts PNG, JPG, GIF, and other images to WebP. All processing is local — and your site gets measurably faster.
Free to download
macOS 11+ · Apple Silicon native · 100% local processing
Three steps, done
Drop your images
Drag PNG, JPG, GIF, and more from Finder. A whole folder works too.
Pick quality
Lossy (e.g. quality 80) or lossless. Save your settings as a preset for next time.
Hit Start
Hundreds of images finish in seconds on Apple Silicon. Nothing is uploaded anywhere.
Key features
- 100% local processing — images never leave your Mac. App Sandbox forbids network access.
- Batch conversion — drop hundreds of images from Finder, or drop directly from a browser.
- Fine-grained quality control — lossy (0–100) or lossless, switched in the UI.
- EXIF preservation — keep capture metadata for galleries and portfolio sites.
- Watermarks — burn in logos or text during conversion.
- Presets — save settings ("Blog post", "Product shots") and switch with one click.
Free to download
macOS 11+ · Apple Silicon native · 100% local processing
How it compares
| What you need | WebP Converter. | Online converter | cwebp (CLI) | Photoshop / Pixelmator |
|---|---|---|---|---|
| Images stay local | ✅ 100% local | ❌ Server upload | ✅ | ✅ |
| Batch processing | ✅ Hundreds at once | △ Daily limits | △ Shell scripting | △ Action / script needed |
| GUI workflow | ✅ | ✅ | ❌ Command line | ✅ |
| EXIF preservation, watermark | ✅ | △ | △ Combine with extra tool | △ Manual steps |
| Animated GIF → animated WebP | ✅ | △ | ✅ | ❌ |
| Price | Free + IAP | Free / metered | Free | Subscription |
Pricing
| Plan | What's included |
|---|---|
| Free | Bulk conversion to WebP, drag & drop, quality control, lossy/lossless toggle. Everyday use is fully free. |
| In-app purchase / subscription | EXIF preservation, watermarks, additional PNG/JPEG output, saved presets. See the App Store for current pricing. |
Supported formats
| Direction | Formats |
|---|---|
| Read | HEIC, PNG, APNG, JPG, GIF, TIFF, DNG, EPS, PSD, JP2, J2K, JPC, BMP, JBIG, BIE, PNM, PGM, PBM, MAG |
| Write | WebP (primary). PNG / JPEG (in-app purchase). |
Who is it for
- Bloggers — boost Lighthouse scores by WebP-ifying past article images.
- Web developers / front-end engineers — ship optimized images alongside client deliverables.
- E-commerce operators — cut transfer costs and speed up product pages.
- Photographers / illustrators — make portfolio sites lighter.
- Marketing & comms — convert internal images without ever uploading them online.
Free to download
macOS 11+ · Apple Silicon native · 100% local processing
FAQ
Q. Does WordPress support WebP out of the box?
WordPress 5.8+ supports WebP at a basic level, but it does not automatically replace existing JPEG/PNG with WebP. Migrating existing assets requires either manual work or a tool like this one.
Q. Lossy or lossless?
Use lossy (around quality 80) for photos and rich gradients. Use lossless for logos, screenshots, and line art with flat color regions. WebP Converter. lets you flip between the two with a single checkbox.
Q. Can it convert animated GIFs?
Yes. Animated GIFs convert to animated WebPs, generally with substantial size savings and full color.
Q. How is it different from Image Tool+?
Image Tool+ is the all-in-one app — multiple output formats, background removal, renaming, and more. WebP Converter. focuses on WebP and starts free. "I just want WebP" → WebP Converter. "I want one app to do everything" → Image Tool+.
Q. System requirements?
macOS 11 Big Sur or later. Universal Binary for both Apple Silicon and Intel.
Support
If you get stuck, find a bug, or want a new feature, send a note via the contact form below.Every message is read by the developer and feedback shapes the next update.
The app is free to start, so try it without commitment. If anything comes up, the developer is one click away.
Download
WebP Converter. is free to start. Add the features you need via in-app purchase or subscription.
Free to download
macOS 11+ · Apple Silicon native · 100% local processing
Want to go even further? Try AVIF Converter.Or pick up the all-in-one Image Tool+.