I want to create .icns for an app i made, i know how to make icons in png and .ico but i don't know much about it.
Which size should i create my icons before to convert them? I don't want my icons to look sharpen or blurred.
I tried just converting them but i don't know if it's just a matter of converting png or ico...
Any advice appreciated!
There's really no point in shoving a low resolution icon into the high resolution icns format. You'll likely need to modify your scaling and make much larger images and then use a tool to assemble the file.
Have a pretty in depth read of the OS X guidelines and the iOS guidelines (which are more complicated, but a shorter read):
It's quite a bit of detail on high resolution packing - so you'll likely need a few hours or days depending on how long you've been making resources.
In addition to letting Xcode make your icns resource and the iconutil command line tool, look into tiff2icns
48, 32, 16, 128, 256, 512, and 1024 wide images ? In addition to @bmike 's answer earlier, here's an AppleScript that automates the process of .icns creation.
set export_folder to choose folder with prompt "Please select export folder." set isImage to false repeat while isImage = false set import_image to choose file with prompt "Please select image to covert." try tell application "Image Events" launch set test_image to open import_image if resolution of test_image = {} or resolution of test_image = {0, 0} then error ["Invalid Image"] end if set isImage to true end tell on error tell application "System Events" display dialog "Error: Selected file is invalid" with title "Error" with icon caution end tell end try end repeat try tell application "Finder" make new folder at export_folder with properties {name:"Icon.iconset"} end tell on error tell application "System Events" display dialog "Error: Folder \"Icon.iconset\" already exists, will overwrite unless canceled" with title "Error" with icon caution end tell end try set export_folder_path to POSIX path of export_folder set import_image_path to POSIX path of import_image set icon_folder_path to POSIX path of export_folder_path & "/Icon.iconset" do shell script "sips -z 16 16 " & import_image_path & " --out " & icon_folder_path & "/icon_16x16.png" do shell script "sips -z 32 32 " & import_image_path & " --out " & icon_folder_path & "/[email protected]" do shell script "sips -z 32 32 " & import_image_path & " --out " & icon_folder_path & "/icon_32x32.png" do shell script "sips -z 64 64 " & import_image_path & " --out " & icon_folder_path & "/[email protected]" do shell script "sips -z 128 128 " & import_image_path & " --out " & icon_folder_path & "/icon_128x128.png" do shell script "sips -z 256 256 " & import_image_path & " --out " & icon_folder_path & "/[email protected]" do shell script "sips -z 256 256 " & import_image_path & " --out " & icon_folder_path & "/icon_256x256.png" do shell script "sips -z 512 512 " & import_image_path & " --out " & icon_folder_path & "/[email protected]" do shell script "sips -z 512 512 " & import_image_path & " --out " & icon_folder_path & "/icon_512x512.png" do shell script "cp " & import_image_path & " " & icon_folder_path & "/[email protected]" do shell script "iconutil -c icns " & icon_folder_path & ";" display notification "ICNS Creator has finished generating an ICNS" with title "ICNS Creator" 