I love that your plugin works, I've tried to manually create favicons earlier. They all worked on standard browsers but not on iOS.
May I make a request? Your plugin makes great favicons that work when you use iOS's "Add to Home Screen" which creates a link ot the site directly as an app icon on your phone, not in the actual browser.
However, it also adds the usual "gloss" function, which looks kind of bad. Would it be possible for you to add this functionality?
If you prefer to add your own effects, be sure to append the -precomposed keyword to the end of the image file name.
Thank you for a useful plugin.