Design a Custom iPhone Home Screen Icon:
- Create a 158 x 158 pixel document either in Illustrator or Photoshop (150 dpi).
- Design icon to your liking.
NOTE: You do not need to round the corners or add 3-D highlights. These effects will be applied to icon once added as home screen icon to your iPhone
- Save icon as a transparent PNG file, at 150 dpi.
- Upload icon to your website (you will need to know the exact URL path to this file for adding to iPhone home screen in the next step).
- Next, follow the instructions at the link below to create a bookmarklet that allows you to add the icon to your iPhone’s home screen:
I used this technique to create a customized icon for my webmail. Let me know how this works out for you. Good luck and enjoy your custom icon!