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I want to be able to create an .ico file containing a complete set of Windows icons (16px x 16px, 32px x 32px, 48px x 48px, and 256px x 256px). Is there a web application that can do this for me given a PNG or BMP that is already 256px x 256px?

  • Hi! I think this question might help you: How to group ico files. But you need an automatic way to do it, right? – Yisela Apr 12 '13 at 2:37
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You could try with ConvertICO.

This is a batch png to icon converter which allows to create up to 20 multiple-size icons from images in png format at a time.

You can select as many output sizes as you need.


Another option is IcoConverter.

IcoConverter takes any image and converts it to an ICO pack.

The aspect ratio is not preserved, so squarish images are recommended.

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    ConvertIco looks good at first -- but when you actually go to use it, it changes each size you uploaded into it's own icon where it autoscales each size. -- Not super useful if you wanted to specify your own image for each size. (Windows will already autoscale a 256x256 icon, so unless you wanted more than just autoscaling, what's the point?) – BrainSlugs83 Jul 3 '16 at 19:16
  • @IceFire Both the question and answers are from 2013. – Yisela Apr 10 at 10:58
  • @IceFire It answered the question then, please re-read it. The date should be the main guidance to whether a question is still valid because I would find it a little time consuming to go over the hundreds of answers I wrote since I joined the sites over 12 years ago. You're always welcome to write a better one, it will bump the question to the top of the main site and get votes if better than existing ones. – Yisela Apr 10 at 11:04
  • @Yisela sorry, given the question, you are right and your answer fits. This still has nothing to do with the year. If an old question is contemporary and an answer does not fit anymore, the answer should vanish. It should then not be your task to check all your old answers, but when confronted with a comment, you should act upon that. I would do that myself on other SE sites – IceFire Apr 10 at 11:07
  • @IceFire Fair point. I believe there's a way to close old questions when they don't apply any more, but the only way to do so with an answer is to downvote it and leave it a comment. Thanks! – Yisela Apr 11 at 12:31
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If you do it yourself use gimp.org. like Adobe Photoshop, but free. Photoshop does not come with a way to combine a .ICO file or to create it. You can purchase a plugin, but it is risky and Photoshop CC wont work with them.

Gimp allows you to combine and save .ICO files. And it is a free piece of software.

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    This ended up working for me. -- I followed this helpful guide, with the caveat that I had to use "Export" instead of save. -- Tl;dr: open your biggest icon file in the Gimp, then open rest using "Open as Layers", so that each icon is a separate layer. Then use file->export and name it "whatever-you-want.ico", typing the extension is important, because it uses a custom dialog for saving, and unlike every other Windows program ever, that's how the Gimp detects what format you want to save as. – BrainSlugs83 Jul 3 '16 at 19:40

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