1. Get free icons of Mac app in iOS, Material, Windows and other design styles for web, mobile, and graphic design projects. The free images are pixel perfect to fit your design and available in both png and vector. Download icons in all formats or edit them for your designs. As well, welcome to check new icons and popular icons.
2. Change app icon on Mac. Help how to open: ICNS icon can be natively opened in Apple Preview and edited in most icon-editing software tools. How to convert: Axialis IconWorkshop and IcoFX are able to work and convert the.incs files. Find conversions from icns file: icns to exr.
3. Replacement icons for iPhone and Mac in the style of macOS Big Sur. Fully open source to encourage the community to contribute to the project.

If it doesn't, move the app to the desktop and back into its folder – that should serve to convince the Finder to refresh the display. Make sure that 'Show icon preview' is ticked in the info (Cmnd-J) for the folder that contains the app. G5 2.1GHz Mac OS X (10.4.8). Since Xcode 4.4 Icon Composer is no longer the recommended way to create icons and is no longer included in the standard install of Xcode. Due to the introduction of Macs with retina display, it is now recommended to provide high resolution versions of all graphics including app icons. To give your app an icon under Xcode 4.4 do the following.

Files with icns extension can be usually encountered as icon archives from Mac OS X (macOS). Contains several sizes of icons in a single file.

Software that open icns file

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ICNS file extension- Apple icon graphic format

What is icns file? How to open icns files?

File type specification:

icns file icon:

File extension icns is most notably associated and ued for Apple icon graphic format, which is the native icon format in Mac OS X.

The typical icns files contain several different sizes of the same icon in a single file. ICSN format supports icons of various sizes, such as 16×16, 32×32, 48×48, 128×128, 256×256 and 512×512 pixels, with both 1- and 8-bit alpha channels and multiple image states. The .icsn files may be both uncompressed and compressed.

The larger icons within the icns file are typically in the JPEG 2000 file format.

Updated: May 15, 2020

The default software associated to open icns file:

Company or developer:
Apple, Inc.

Apple Preview is document and graphic viewer that is integral part of Mac OS X operating system. It can view and also export/convert the most common bitmap picture formats.

Company or developer:
Apple, Inc.

macOS is Unix-based desktop operating system, a successor of Mac OS X system for MacBook-family, iMac, Mac Mini and Mac Pro computers, developed and sold by Apple, Inc.

Company or developer:
Apple, Inc.

OS X or Mac OS X is Unix-based operating system developed by Apple Inc. for Macintosh computers. It contains basic core applications for everyday use, such as Finder basic file manager, Safari for Internet browsing, QuickTime for video, iTunes for managing audio data and iPod, iOS devices management , iMessage instant messaging, Mail, Contacts, Calendar and many more.

The latest version 10.11 of OS X is called El Capitan. It is available to purchase on Mac App Store as well as is distributed with new Mac computers and notebooks. It includes features to improve the security, performance, design and usability.

OS X operating system was replaced by new macOS in 2016!

Company or developer:
ChickenByte

​IconBox is a graphic utility and icon manager for Mac OS X. It is iPhoto like application that enables you to store, manage & change all your icons or dock icons using simple drag & drop like functionality.

The first icon organizer for Mac OS X now has full icon & dock customization capabilities and online tools for searching new icons.

Related articles:

Help how to open:

ICNS icon can be natively opened in Apple Preview and edited in most icon-editing software tools.

How to convert:

Axialis IconWorkshop and IcoFX are able to work and convert the .incs files.

Find conversions from icns file:

Find converter to icns file type:

List of software applications associated to the .icns file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open icns file, edit icns file, convert icns file, view icns file, play icns file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting icns files.

Software that open icns file - Apple icon graphic format

Mac Icon Format

Programs supporting the exension icns on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open icns file action.

Apple macOS / Mac OS X:

Mac Icon File

Main software associated with icns file by default:
Preview
Other suggested software:
icns Browser
Apple Icon Composer
Icons Maker
Image2icon