Craft
Notes on making icons
Short, practical guides on favicons, icon sizes, and the file formats behind them. No fluff, just the parts that trip people up.
App icon sizes for iOS and Android, without the spreadsheet
Shipping an app means rendering a small mountain of icon sizes. Here is what iOS, Android, and PWAs each ask for, and how to make the whole set from one square.
'ICO or PNG: which favicon format to reach for'
The .ico format is decades old, yet favicons still lean on it. Here is when the old container beats a plain PNG, and when a PNG is the better call.
The favicon sizes that actually matter
A dozen favicon sizes float around online, but only a few earn their keep. Here is the short list, and what each one is really for.