Png to icns mac os

ICNS to PNG Converter

CloudConvert converts your image files online. Amongst many others, we support PNG, JPG, GIF, WEBP and HEIC. You can use the options to control image resolution, quality and file size.

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The Apple Icon Image format (ICNS) is used for icons on Apple’s OS X. It supportes the storage of various resolutions (16x16x up to 1024×1024) in one single ICNS file. Also, it supports the storage of several images for different states.

PNG or Portable Network Graphic format is a graphic file format that uses lossless compression algorithm to store raster images. It uses 2 stage compression methods. It is frequently used as web site images rather than printing as it supports only the RGB color model. So CMYK color images cannot be saved as PNG image.

+200 Formats Supported

CloudConvert is your Swiss army knife for file conversions. We support nearly all audio, video, document, ebook, archive, image, spreadsheet, and presentation formats. Plus, you can use our online tool without downloading any software.

Data Security

CloudConvert has been trusted by our users and customers since its founding in 2012. No one except you will ever have access to your files. We earn money by selling access to our API, not by selling your data. Read more about that in our Privacy Policy.

High-Quality Conversions

Besides using open source software under the hood, we’ve partnered with various software vendors to provide the best possible results. Most conversion types can be adjusted to your needs such as setting the quality and many other options.

Powerful API

Our API allows custom integrations with your app. You pay only for what you actually use, and there are huge discounts for high-volume customers. We provide a lot of handy features such as full Amazon S3 integration. Check out the API documentation.

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PNG to ICNS Converter

CloudConvert converts your image files online. Amongst many others, we support PNG, JPG, GIF, WEBP and HEIC. You can use the options to control image resolution, quality and file size.

convert to

compress

capture website as

create archive

extract

PNG or Portable Network Graphic format is a graphic file format that uses lossless compression algorithm to store raster images. It uses 2 stage compression methods. It is frequently used as web site images rather than printing as it supports only the RGB color model. So CMYK color images cannot be saved as PNG image.

The Apple Icon Image format (ICNS) is used for icons on Apple’s OS X. It supportes the storage of various resolutions (16x16x up to 1024×1024) in one single ICNS file. Also, it supports the storage of several images for different states.

+200 Formats Supported

CloudConvert is your Swiss army knife for file conversions. We support nearly all audio, video, document, ebook, archive, image, spreadsheet, and presentation formats. Plus, you can use our online tool without downloading any software.

Data Security

CloudConvert has been trusted by our users and customers since its founding in 2012. No one except you will ever have access to your files. We earn money by selling access to our API, not by selling your data. Read more about that in our Privacy Policy.

High-Quality Conversions

Besides using open source software under the hood, we’ve partnered with various software vendors to provide the best possible results. Most conversion types can be adjusted to your needs such as setting the quality and many other options.

Powerful API

Our API allows custom integrations with your app. You pay only for what you actually use, and there are huge discounts for high-volume customers. We provide a lot of handy features such as full Amazon S3 integration. Check out the API documentation.

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Convert PNG to ICNS on Right Click [Mac OS]

Convert PNG to ICNS with Right-Click integration. Works for any common image format with transparent background.

If you ever needed to convert your asset to ICNS, you know how cumbersome process it can be. More over all these online services just doesn’t work as expected.

TL, DR

Do you want to have option to convert PNG to ICNS in your context menu? You can create automator app yourself in Automator for free, or you can proceed right to the download. (Only for Mac OS X)

Tutorial

Create this “app” is super easy. Follow these 8 steps and it will take you about 1 min. And the output is just superb.

1. Open Automator App
2. In “Choose a type for your document” select “Quick Action”
3. In the top bar “Workflow receives current” choose “Images”
4. On Desktop create folder named “icon.iconset”
5. Drag and drop from left pane “Copy Finder Items” and select newly created folder
6. Drag and drop “Photos -> Change Type of Images” to the area on the right, and select PNG
7. Drag and drop “Photos -> Scale Images” and set size to 1024, remember that images must be square format and have transparent background

1. Now we will be creating asset of images needed for iconutil command. First of all we will rename the newly created image to icon.png. Then we will resize it to all necessary sizes for the iconutil . You should end up with something like this:

Here is the script with comments:

1. Save or export it
2. Double click for install and you are done

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Declaration of VAR

and some other stuff

Convert PNG to ICNS on Mac OS

Developing an application for Mac OS, sooner or later you’ll want to add an icon to it. And Mac OS uses Apple’s own format for application icons — Apple Icon Image format — files with .icns extension. But how does one create such a file?

It is actually not so hard, but there are some tricky moments. I’ll cover those and as a bonus I’ll show you how to use .icns icon in Qt-based application (deadly simple).

How to convert PNG to ICNS

There is an out-of-the-box Mac OS tool for such conversion — iconutil (documentation for which is nowhere to find at Apple’s website, so this brief man page is all we have).

However, you cannot just take a random PNG and feed it to iconutil . I mean, you can, but it will give you the following error:

Because iconutil takes only specially named folders. Just how am I supposed to know about that? And it shows similar short and useless error messages for other things it doesn’t like. For example, here’s an output for the situation when files inside iconset folder are not named “properly” or have “wrong” dimensions:

After a set of trials and browsing the internet I found out (hopefully) all the requirements:

1. First you need to prepare a set of icon pictures and put those into a folder with .iconset “extension”, for example some.iconset ;
2. Pictures from this set should be named in a certain way and have specific dimensions.

Correct dimensions can be found in Apple Guidelines. So it’s 5 different dimensions, but actually 10 “physical” files as each dimension is represented twice (you’ll see why). And these files have to be named according to the following format:

So here’s the full list of proper filenames:

Script to automate the process

But that’s rather boring to create all those files manually in some graphics editor, right? So let’s use sips utility (although, I recommend using ImageMagick, as it gives better quality results):

Better, but still — we have to run it 10 times. So let’s write a Python script for that:

The full script is published here. There is also a PyPI package.

As an example, I prepared a square picture with a resolution of 2048×2048 and 150 pixel per inch, so there is plenty room to prevent upscaling:

Pass picture path to the script like that:

The script will:

Create a folder

/Desktop/apple.iconset ;

Generate 10 files with different dimensions and save those into that folder;

Call iconutil on this folder and put resulting apple.icns to

Here’s how the final apple.icns looks like in Preview:

So everything from that folder is bundled into one file.

Setting icon for a Qt-based application on Mac OS

And now the bonus part — how to use .icns as an icon for a Qt-based application.

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