ICN File Extension

Windows Icon Format

File Type icn
Popularity
4.6 (40 votes)
Application Micrografx Designer
Category Graphics Files

What is a ICN file?

The ICN extension is related to Windows Icon Format and is classified in the Graphics Files category, which contains 556 files.

ICN files are compatible with various operating systems, including Windows, Linux and Mac OS. If you need to open a ICN file, you can use one of 4 programs, such as Micrografx Designer, XnView and SunOS.

Windows

Mac OS

XnView

Linux

How to open a ICN file?

If you’re having difficulty opening a ICN file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.

Micrografx Designer, XnView and SunOS are among the most widely used programs for handling ICN files. To set up the newest version of Micrografx Designer on your device, simply go to the official Micrografx website. There you can download the edition compatible with every operating system.

Once the process is complete, Micrografx Designer should take over as the default application for ICN files.

Make Micrografx Designer the default ICN viewer

Change the default app to open files on Mac

Right click or use Control + Left Click on the desired ICN file to access a dropdown menu of actions;
Choose "Open in Application" and click "Other";
At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
Choose "All Programs" in this menu and search for Micrografx Designer. Check the box next to "Always open in app" to make it the default program.

Change default programs in Windows

Start by right-clicking on your ICN file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
Inside the popup window, scroll through the list of applications and specifically choose Micrografx Designer as the application to associate with your ICN file;
Check the "Always use this app" checkbox and click "OK".

Finding answers to ICN file problems

Rest assured, any issues with ICN files can typically be addressed with simple software adjustments. See the tips below for help.

What are the steps to repair a damaged ICN file?

Open the damaged ICN file in a recovery program and select the "Repair" menu item to start the repair operation. Allow the recovery process to complete, which will automatically repair the damaged graphics files.

What are the methods to detect if my ICN file has been corrupted?

The signs of corrupted ICN graphics files can manifest as:

Unexplained ICN file size inflation;
Micrografx Designer or other programs stop responding or crash when trying to handle the file;
When opening the file, errors occur or the inability to access its contents;
While working with the file, error alerts are encountered;
The file shows slow performance when edited in Micrografx Designer;

What are the reasons behind Micrografx Designer crash?

Insufficient software updates can contribute to Micrografx Designer crash. To avoid this, make sure that you have installed the latest updates for Micrografx products.

A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.

How to edit a ICN file?

To modify ICN files, it is necessary to install dedicated software that lets you open and edit graphics files. Online ICN editors generally offer fewer tools compared to programs designed for Windows Icon Format.

Best ICN Editor Software in 2026

Based on the criteria above, here is a selection of ICN editors you can use.

ICN Editor Software	Developer	Platforms	Overall Rating
Micrografx Designer	Micrografx	Windows	4.6 out of 5 (45 reviews)

‹ ICNS | ICMT ›