How to add a Apple touch icon on your Ghost blog
How to:
In the Code Injection section / header, add this snippet:
<!-- Apple touch icon -->
<link href="https://example.com./blog/content/images/2019/01/icon-256.png" rel="shortcut icon" type="image/x-icon">
<link href="https://example.com./blog/content/images/2019/01/icon-32.png" rel="apple-touch-icon">