![]() ![]() icon.icns: A bundle of icons of various sizes. ![]() It has a simple folder structure: $ tree Caddy.app Caddy.app/ └── Contents ├── ist ├── MacOS │ └── caddy └── Resources └── icon.icns 3 directories, 3 files app folder with a binary and a manifest inside. app bundleĪ launcher-runnable macOS application is nothing more than a. ![]() Then, assuming your icons are in a folder called “myicons”, make the icon set with iconutil: $ iconutil -c icns -o icon.icns myicons.iconset Make the. (The end of the article links to a sample program.) Yes, it’s a lot of work, but this step can be automated, and you only have to do it once. Don’t forget the versions, which are the next size up but labeled as the current, half-size of the next. This can be tedious to do unless your graphics program exports them for you, or you can script the resizing with a tool like sips: $ sips -z $SIZE $SIZE myicon.png \ -out myicon_$.pngĪnd so on. The recommended list of sizes for full compatibility are 16, 32, 64, 128, 256, 512, and 1024, with variants of each one for hi-DPI screens (which is basically all of them these days) except 1024. Once you have your big icon, you’ll need to save the icon in different sizes and resolutions. Save it as a transparent PNG with dimensions 1024x1024 for best results.Įxample icons for apps that come with macOS. It needs to look great on light and dark backgrounds. ![]() You’ll need a high-resolution icon preferably something beautiful. DS_Store files either by hand or with the help of some crazy tool. Actually, it could work, but you’d need to craft some macOS-specific stuff like DMG and. Requirements: You need macOS to complete this guide. There are other tutorials out there for pieces of this, and end-to-end solutions that did way more than I wanted or in a different way, but I wanted full control of knowing what and how things got packaged up. app file and distributed in a read-only DMG that has the nice “drag-and-drop” install. It does not require XCode, cgo or any special libraries.īy the end of this tutorial, your Go program will be bundled into a. It can then be downloaded, installed, and run as if it were a native Cocoa app. You can follow this tutorial to package up a Go program - with or without external resources - for macOS. This is a quick guide about how we packaged up Relica (a cross-platform backup service written in Go) for macOS. ![]()
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