AVIF Converter.
Offline Batch Image Compressor
Only for Mac
Free · In‑App Purchases
Mac
AVIF files are about half the size of JPEG at the same quality. Batch convert photos and animations with HDR and transparency kept — 100% offline on your Mac.
Convert JPG, PNG, HEIC, TIFF and more to AVIF — and AVIF back to PNG — in unlimited batches, for free. AVIF files are typically about half the size of JPEG at the same visual quality, HDR photos stay HDR, and everything runs locally on your Mac.
FREE, UNLIMITED BATCH CONVERSION
• Any image → AVIF: JPG, PNG, HEIC, TIFF, WebP, GIF, BMP, PDF, SVG and more
• AVIF → PNG
• Animated GIF, APNG, WebP and HEIC → animated AVIF, keeping every frame, the frame timing and the loop count
• Drag & drop images or whole folders from Finder or Safari, then click Start
MADE FOR MODERN IMAGES
• HDR stays HDR: HDR photos from iPhone and other smartphones (macOS 14 or later) and HDR animations
• EXR and Radiance HDR files become HDR AVIF (macOS 15 or later)
• Wide color gamut (Display P3) and color profiles are kept
• Transparency (alpha channel) is kept
• EXIF, GPS and camera data are removed by default before sharing
• Quick Look extension: preview AVIF files in Finder, even on macOS 12
100% PRIVATE
No uploads, no account, no tracking. Unlike online converters, your images never leave your Mac.
PRO FEATURES (IN-APP PURCHASE)
All Features — Lifetime (one-time purchase), or a yearly or monthly subscription
• AVIF → JPEG, and animated AVIF → GIF
• Encoder settings: quality, lossless, chroma subsampling, 10/12-bit depth
• Resize by max width/height with the aspect ratio locked
• Before/after preview window with estimated file size
• Presets (⌘1–⌘9) and renaming: numbering, prefix and suffix
• Keep EXIF/GPS data, the original extension and file dates
• Unlimited watermarks
Unlimited Watermark (one-time purchase)
• Add your logo to every image. Without it, the watermark works for 10 images.
TIPS
• AVIF encoding is CPU-intensive. For large batches, Encode Speed "8 (recommended)" gives a good balance of speed and file size.
• After reinstalling or moving to another Mac, use "Restore purchases".
• Help > In App Purchase shows what each purchase includes.
DETAILED ONLINE MANUAL
Every feature is explained in detail, from your first conversion to advanced settings and FAQs, so you can find answers whenever you need them.
https://d1v1b.com/en/products/avif-converter/manual
Questions or feature requests? Email sonice.d1v1b[-]gmail.com (replace [-] with @). The developer usually replies within 24 hours.
Terms of Use: https://d1v1b.com/termofuse
- This app hasn’t received enough ratings or reviews to display an overview.
• Improved stability on macOS 12 Monterey.
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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Reiji Kobayashi
- Size
- 14.8 MB
- Category
- Developer Tools
- Compatibility
Requires macOS 12.0 or later.
- Mac
Requires macOS 12.0 or later.
- Mac
- Languages
English and 5 more
- English, French, German, Japanese, Simplified Chinese, Spanish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Enable All Features - Annualy $5.99
- Enable All Features $7.99
- Enable All Features - Monthly $1.99
- Unlimited Watermark image Pack $1.99
- Copyright
- © SoNice!