Batch convert WebP to PNG.
Batch convert HEIC, PNG, JPG (and much more!) to WebP.
Add watermark with converting.(In App Purchase)

# Easy to Use
You can drag & drop images, folders and directory from web browsers like safari.
You can output multiple type of images in one time.

# Support Images Type
and more: jp2, j2k, jpc, bmp, jbig, bie, pnm, pgm, pbm, mag.

# Secure
All processes are done in your mac.
You don't need to upload your important images to the Internet.

# In App Purchase - Quality, Resize, Preview Pack
- WebP encoding options. (Lossless, Preset, Method, Keep Color Profile and Sharp YUV)
- Keep Color Profile.
- Change output WebP quality.
- Resize with maxWidth and maxHeight.
- Preview result.
※ Lossless may be automatically a little lossy for stable encoding depending on the image.

# In App Purchase - Unlimited Watermark image Pack
- No limit to add watermark.

# And More!
Dark mode is supported.

※ If you have any request, please feel free to send an E-mail to sonice.d1v1b[-] ([-]→@)
※ Please note that macOS dafault apps (ex:Finder and Safari) cannot read correct WebP Color Profile yet.
※Please restore purchase after reinstall the app.

What’s New

Version 4.2.7

Add acknowledgements.

Ratings and Reviews

5.0 out of 5
2 Ratings

2 Ratings

App Privacy

The developer, Reiji Kobayashi, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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