This post is part of my Jetpack for WordPress guide.
Site Icon recommended
Favicons and Apple touch icons are a necessary vanity. I don’t particularly enjoy putting these together since I’m not much of a designer, but Jetpack’s Site Icon feature makes it much easier. Upload an image (maybe just your logo?), crop it with the familiar WordPress image editor, and bam! Done! It generates all the necessary icon formats and puts them infor you. Note: It doesn’t appear this module renders an .ico format, which is necessary if you want IE<11 support.
Here is the output that is placed in the head:
<link rel="icon" href="...site_icon-32x32.png" sizes="32x32" />
<link rel="apple-touch-icon-precomposed" href="...site_icon-128x128.png">
<meta name="msapplication-TileImage" content="...site_icon-128x128.png"/>