How to Convert PNG to ICNS on Computer - Here are 3 Ways to Choose
Last Updated on September 20, 2025 by Peter Wood
In the field of digital design and application, icons play a key role and are a very important part of the user experience during the use of software. While PNG files are great for a variety of uses, when it comes to macOS apps and system icons, the ICNS format reigns supreme. If you have been looking for an easy and cost-effective way to convert PNG files to ICNS, in this article, you will have a detailed guide.
Part 1: How to Convert PNG to ICNS on Mac
Edit app icons for Mac, and you can do it directly on your Mac. Preview is a built-in program on MacOS that allows you to edit and view various types of images and documents. When saving the image and converting, you can select ICNS as the target format and you will get the ICNS icon from PNG.
Step 1: Find the PNG image that needs to be converted to ICNS on your computer, and right-click to bring up the shortcut menu. Click the Preview button under Open With and you will be able to open the PNG image in Preview.
Step 2: In Preview, you can perform some basic viewing and editing of the image. Click the Duplicate button in File to make a basic copy of the layer. Still, in File, click the Save button to bring up the conversion dialog box.
Step 3: Click the Save As button and you will be able to see all image types that can be converted. Select ICNS in it. After the selection is successful, click the Save button to convert the PNG image to ICNS and save it.
Part 2: Convert PNG to ICNS by Using Online Converter
CloudConvert is a versatile online file conversion service that supports the conversion of various file formats, including image formats like PNG to ICNS. The batch conversion function provided by CloudConvert can quickly convert a large number of files without file size restrictions.
Step 1: Open the browser on your computer and enter https://cloudconvert.com/png-to-icns to directly enter CloudConvert's PNG to ICNS page. Click the Select File button on the page, select the PNG image in the pop-up dialog box, and import it into the website.
Step 2: After the import is successful, the PNG image will appear in the list below. In the list, you can click the Add More Files button to batch import images into ICNS. Click the Convert button to start converting PNG images.
Step 3: Wait for the website to upload and convert. After the conversion is successful, the word Finished will appear. Click the Download button to save the ICNS image converted from PNG to your computer.
Part 3: How to Convert PNG to ICNS without Restriction
Preview has a restriction when converting PNG to ICNS icons. The PNG image must be larger than 512*512px. To be successfully converted. Although CloudConvert does not have this limitation, it does not have editing and preview functions. WidsMob ImageConvert does not have this trouble. As a professional image conversion software, it can convert PNG images to ICNS under various circumstances.
1. Import images in batches and view image-related information.
2. Modify the size of the image through 4 different modes.
3. Convert images to various formats, including ICNS, PNG, JPG, etc.
4. Export high-quality images through the AI Super Resolution function.
Step 1: Download and install WidsMob ImageConvert on your computer, start the software, click the Import button, and select the PNG image in the pop-up dialog box to import it into the software. After the import is successful, view the PNG image in the software, and you can also click the Add button to import multiple images in the software.
Step 2: Select the image you want to convert to ICNS, and you will be able to view its details in the lower right corner. Click the Convert button and select Convert Selected Images or Convert All Images to enter the PNG to ICNS page. To the right of the image preview, you can see a lot of features that allow you to edit your image.
Step 3: In Resize, you can customize the size of the image. Click the Mode button, select By Width in the pop-up dialog box, and then enter the corresponding value in Width, so that the size of the image can be modified without affecting the image proportion.
Step 4: To ensure high-quality exported ICNS images, click the AI Super Resolution icon in the upper right corner of the page to summon the high-quality export function. Select the multiple that the GIF animation needs to restore. In Scale Mode, click the Apply button to apply it. Don't forget to click the Save As button to save it.
Step 5: Re-open the high-quality exported PNG image, click the Icon Composer button, and select the Mac icon to summon the export dialog box for converting to an ICNS image. View the image's information in detail, if it is of low quality, it will not be allowed to be converted. After confirming that it is correct, click the Save button to save it on your computer, so that you do not have to successfully convert the PNG image to an ICNS image due to the lower quality.
Part 4: FAQ about Converting PNG to ICNS
Conclusion
In today's digital environment, user interface and aesthetics are crucial, and having the right icons can make all the difference. Whether you're an experienced developer or a creative enthusiast, knowing how to convert PNG files to ICNS is a valuable skill. With the three methods discussed in this article, you can edit PNG images and ensure that your macOS apps and system icons are as visually appealing as they are functional.