PNG to ICNS Converter

Create beautiful macOS icons in seconds

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About ICNS Files

ICNS is Apple's proprietary icon format used in macOS for application, file and folder icons.

History

The ICNS format was introduced in Mac OS 8.5 and has evolved to support higher resolutions as Apple's displays improved over time.

Specifications

Modern ICNS files contain multiple image variants at different resolutions, from 16×16 to 1024×1024 pixels. The format supports transparency and is optimized for macOS's interface.

Common Uses

ICNS files are primarily used for application icons, but are also used for folder customization, document types, and system preferences icons.

Creating ICNS Icons

Professional designers typically create ICNS icons in vector editing software like Adobe Illustrator or Sketch, then export them at various required sizes.

Requirements

For best results, your source PNG should be at least 1024×1024 pixels with transparency. Our tool automatically handles resizing and formatting.

How to Use ICNS Icons

In macOS

To change an app icon, right-click on the application in Finder, select 'Get Info', drag your ICNS file onto the small icon in the top-left corner of the info window.

Design Tips

Follow Apple's Human Interface Guidelines for best results. Icons should be simple, recognizable, and consistent with the macOS visual language.

Best Practices

Start with a high-resolution source image. Ensure your icon has clear edges and works well at small sizes. Test your icon against both light and dark backgrounds.

Frequently Asked Questions

An ICNS file is Apple's proprietary icon resource file format used in macOS for application, folder, and document icons. It stores multiple versions of the same icon at different resolutions.
ICNS files are specifically optimized for macOS. If you're developing an application, creating custom folder icons, or wanting to replace existing icons on your Mac, you'll need the ICNS format.
For best results, your PNG should be at least 1024×1024 pixels. This ensures the highest quality when scaled down to smaller sizes. The image should also have transparency where needed.
Our tool processes your PNG entirely in your browser. It resizes the image to the required dimensions, applies proper masking for macOS style, and packages everything into an ICNS file format with all the necessary icon sizes.
No, you can convert as many PNG images as you need. The processing happens in your browser, so there are no server-side limits.
Yes. Since all processing happens within your browser, your images never leave your device. We don't store, collect, or have access to any of your uploaded images.