I would like to add a link in my root site’s header – not for different Omeka S sites but the base URL of Omeka S – mainly so I can have WhatsApp and other apps render the site’s icon automatically when I share links via mobile.
In Omeka Classic I would do this inside my theme’s header.php by adding this line and a link to my image file:
<meta property="og:image" content="/pathtomyimage.png">
As Omeka S themes and sites work differently than in Classic, so the site header meta properties are not editable in the theme’s directory, and are part of the core Omeka S views. I would rather not mess around with these (though I do so for styling my base URL landing page in /application/view/omeka .
While there are other ways to create a site favicon independently of the Omeka installation for display in browser tabs, desktop and mobile page icons, etc. *by creating a PNG favicon in my site’s public html directory), the only way I know to render a preview sharing icon in WhatsApp is via the above OpenGraph protocol method.
Ideally this meta property (og:image) should be configurable in the global administrator settings, where I could add an image from my assets as one would within a site’s theme settings.