Convert PNG to ICNS for macOS apps, ICNS to PNG, and more. Create Apple app icons — 100% browser-based, free.
Files never leave your device · No login required · No file size limits
ICNS is Apple's icon format for macOS application icons, Finder icons, and dock icons. Creating ICNS files usually requires Xcode or macOS-only tools. PixelForge converts PNG to ICNS and ICNS to PNG directly in your browser — on any platform.
ICNS (Apple Icon Image Format) is Apple's proprietary icon format for macOS. It stores multiple icon sizes in a single file — from 16×16 to 1024×1024 pixels — allowing macOS to use the best size for each context (Finder, Dock, Spotlight, etc.). ICNS supports PNG and JPEG2000 compression internally. Every macOS application requires an ICNS file for its app icon.
Upload image
Click 'Convert Now' and select your PNG or JPG file.
Choose ICNS output
Select ICNS as the output format.
Set sizes
Choose which icon sizes to include.
Download
Download your ICNS file.
macOS app development
Convert your app logo PNG to ICNS format for Xcode and macOS app submission.
View ICNS files
Convert ICNS to PNG to view and extract macOS app icon artwork on any platform.
Icon design
Convert ICNS back to PNG for editing the icon in your preferred design tool.
Cross-platform icons
Convert between ICNS and ICO to cover both macOS and Windows icon requirements.