"og:title" falls back to <title>. My <title> tags include the title of the website _and_ the title of the page. I put _just_ the page title in "og:title". "og:

"og:title" falls back to <title>. My <title> tags include the title of the website _and_ the title of the page. I put _just_ the page title in "og:title". "og:image" has no standard alternative. The rest are usually not needed. og:description falls back to meta description just fine.