I have a 16x16 PNG that I want to use for my favicon. It works fine in modern browsers, but I need a favicon.ico file for older ones. The problem is that either the ICO format doesn't support semi-transaprency, which my favicon uses, or the converters I've found online don't support it.

Which is it? If the format supports it, how can I convert a PNG to an ICO with semi-transparency?

closed as too broad by Zistoloen, John Conde Oct 31 '13 at 11:06

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Here's a website I found using photoshop and a website to do it.

Here's another website I found that deals with the Windows ICO plugin for Photoshop - located here.

Warning: I have NOT tested that file download for exclusion of viruses - download at your own risk.


If Christopher's links don't help, simply try changing the file extension from .PNG to .ICO - that's worked for me in the past.

  • With transparent .ico's too? – Christopher Feb 13 '11 at 13:04
  • Honestly - I can't remember, and I don't have anything handy to test... – Mike Hudson Feb 13 '11 at 22:02

For handling image formats, I've found irfanview to be the best (and free). See: http://www.irfanview.com/