Converting png images to ico format is a painless process with the help of the utilities below, all of them have been downloaded and tested by me, only the excellent ones are reserved, others are abandoned.
1, Portable AveIconifier
AveIconifier is an amazing free image conversion utility which will help you to convert PNG image files into ICO format or vice versa.
To convert a png image to ico format, just drag and drop it into the button named “Drop a png file here”, to change the image size of the output icon, right click on the left button and select one or multiple dimensions from the pop up menu( 128 X 128, 96 X 96, 72 X 72, 64 X 64, 48 X 48, 32 X 32, 24 X 24, 16 X 16 ).
The conversion speed is very rapid and the image quality of the output icon is as same as the input file. Plus, it works well with the alpha channel of the input image and supports batch conversion, you could drag multiple images at a time into the left or right pane to process them, the converted image files can be found in the “temp” subfolder just under the application folder. It’s highly recommended!
AveIconifier supports all Windows OSes like Windows 7, Windows XP, etc.
It is a 651KB download available from Softpedia.
2, Niall’s png2ico
This portable and simple application is created to convert 32-bit png images to icons for you, however, the defect of it is that you can not customize the image size of the generated icon, the output dimension is equal to the original one.
Niall’s png2ico works on Windows 7, Windows XP, etc.
Head over to the developer’s website and download it now.
CxImage is an open source and portable image editor and converter, it can be used to convert images between the following formats: bmp, gif, jpg, png, ico, cur, tga, raw, tif, mng, pcx, wbmp, wmf, jp2, jpc, pgx, ras, pnm, ska, which suggests that the following conversions are supported: bmp to ico, gif to ico, jpg to ico, png to ico, tga to ico, ico to bmp, ico to gif, ico to jpg, ico to png, ico to tga, etc.
CxImage is compatible with all Windows editions.
CxImage is a free download available from CodeProject.
SimplyIcon is a portable program which can convert image files in bmp, gif, png, jpg, tif, pcx format into icons, it will create 128×128, 32×32, 24×24 and 16×16 levels for you automatically.
SimplyIcon works on Windows 7, Windows XP, etc.
You can download it from CNET.
This is virtually a free ico creator and editor, you can use this powerful and professional program to create new icons from scratch, open and edit icons, or convert images in bmp, png, jpg, cur, gif, jp2, j2k, ani format into ico format.
IcoFX is available from CNET
6, Greenfish Icon Editor Pro
This is another professional icon creation and conversion utility, it could convert images in ico, cur, ani, png, xpm, bmp, jpg, jpeg, jpe, gif, pcx, gfie, gfi, res format to icon files or cursor files and vice versa.
Additionally, it has a portable version.
Go ahead and get it now from http://greenfish.xtreemhost.com/