Choose prepared artwork
Upload a PNG with the artwork and padding you intend to see. The converter will fit it inside each square rather than crop it.
Free PNG to ICNS converter
Package a PNG asan ICNS icon Online.
This Free PNG to ICNS converter Online builds an ICNS file with six centered PNG entries for a macOS icon workflow. It does not crop the artwork, create an app bundle, or add a 1024px icon.
- Private by design
- Default ICNS
- Paste supported
Files stay in this browser
All conversion runs on-device
AVIFBMPEPSGIFICNSICOJPGODDPNGPSPSDTIFFWEBP
About this converter
Free PNG to ICNS conversion, built for a real workflow.
PNG is a useful source for icon artwork because decoded transparency can remain in the generated entry images. This route contain-scales the PNG into square 16, 32, 64, 128, 256, and 512 pixel PNG entries, adding transparent padding when needed, then packages them as one ICNS file. Review the result at small sizes because the converter does not crop or redraw the artwork.
- The ICNS file contains six PNG-backed entries: 16, 32, 64, 128, 256, and 512 pixels.
- Each entry uses contain scaling, so a non-square PNG is centered with transparent padding instead of being cropped.
- Existing decoded PNG transparency can remain in the generated PNG icon entries.
- The encoder does not generate a 1024px entry, create a macOS app bundle, or configure an app icon.
- The tool packages rendered pixels; it does not recover vectors, add detail, remove backgrounds, or guarantee a particular output size.
How it works
Upload once.
Export ICNS.
Keep ICNS selected
Use the ICNS target for a macOS icon handoff that accepts these six PNG-backed sizes.
Download and test
Download the ICNS, then test it in the specific macOS or development workflow where you plan to use it; the tool does not configure an app bundle.
Made for real pipelines
PNG to ICNS.
One workspace.
Convert without uploading your assets. Switch outputs anytime — web, print, icons, and document targets from the same batch.
Create an ICNS fileSix icon sizes
Package 16px through 512px PNG-backed entries in one ICNS file.
No automatic crop
Contain scaling preserves the whole composition and adds transparent padding for non-square artwork.
Transparent PNG entries
Retain existing decoded PNG transparency in the generated icon entries when the source provides it.
Good to know
Questions, answered.
Is this PNG to ICNS converter free?+−
Yes. PNG to ICNS conversion is free and available Online without an account.
Are PNG files uploaded during ICNS conversion?+−
No. The tool creates the ICNS from browser-decoded image data without sending the PNG to a conversion server.
Which ICNS sizes does this converter create?+−
It packages six centered PNG entries at 16, 32, 64, 128, 256, and 512 pixels.
Will the PNG be cropped to a square?+−
No. The encoder uses contain scaling, so non-square artwork is centered within each square entry and receives transparent padding.
Can PNG transparency remain in the ICNS?+−
Yes. Existing transparency in the browser-decoded PNG can remain in the PNG-backed icon entries; the converter does not create transparency where none exists.
Does the download create or configure a macOS app icon?+−
No. It downloads an ICNS file only. Adding it to an app bundle or project remains a separate step, and you should validate it in the destination workflow.