PNG → ICNS
Packs PNG into ICNS with seven resolutions from 16 to 1024px and transparency preserved, for macOS app icons and DMG installers.
Drag files here or click to upload (multiple files supported)
Ctrl+V to paste from clipboard
How to convert PNG to ICNS
- 1Upload your PNG file by dragging, clicking, or pasting.
- 2Adjust quality settings if needed.
- 3Click 'Convert Now' and wait for the conversion to complete.
- 4Download your converted ICNS file.
About PNG to ICNS conversion
PNG is a general-purpose bitmap format released in 1996, uses DEFLATE lossless compression, supports 8-bit alpha channels and 48-bit color depth, and is a universal standard for screenshots and design deliverables. ICNS is an icon container format exclusive to Apple, used to store multi-resolution icon entries to meet the display requirements of macOS systems, which creates the demand for converting PNG to ICNS.
The conversion generates a standard ICNS container that encapsulates multi-resolution PNG entries from 16px to 1024px. It retains the original 8-bit alpha channel information of the source PNG, with no loss of the original color depth and pixel information, and no additional quality degradation.
The output of this conversion is suitable for application icon development for macOS 10.7 and above, adapts to Finder icon display and Xcode application packaging workflows, and developers can directly import the output file into their projects for use.
PNG vs ICNS: technical comparison
| Feature | PNG | ICNS |
|---|---|---|
| Compression | Lossless | Lossless |
| Transparency | Yes | Yes |
| Animation | No | No |
| Released | 1996 | 1998 |
| Developer | PNG Development Group | Apple |
FAQ about PNG → ICNS
Is there quality loss after conversion
No quality loss occurs after conversion. PNG is itself a lossless compression format, and the conversion process generates multi-resolution entries in the ICNS based on the original pixel information, retaining the original image quality.
Will the alpha channel be retained
The original 8-bit alpha channel of the source PNG will be retained. All resolution entries in the generated ICNS container retain transparency information, and the output can be directly used to create semi-transparent icons for macOS.
What is the maximum single file size
This tool supports a maximum single file size of 50MB, and only one file can be converted at a time. Files exceeding the limit cannot be submitted for processing.
Will files be stored
Files are uploaded to the server via HTTPS for conversion. After conversion is completed, the server immediately deletes both the source file and the output file, and does not store any files to protect user privacy.