To install instant.page on your WordPress site:
- Go to your dashboard > Plugins > Add New
- Search for “instant.page” in the search bar at the top right
- Click on “Install Now”
- Click on “Activate”
You may alternatively download it from the WordPress plugin directory.
Adding <body> attributes
If you want to add attributes to the <body> as detailed in Pages not preloaded go to your dashboard > Appearance > Theme Editor > Theme Header (header.php) on the right. You’ll be able to add attributes to the <body> there.