Standardise social meta tags around use of "property" attribute

[Newnab]

Currently, a lot of them use the "name" attribute, which some networks account for, but is not the recommended practice.

https://ogp.me/
https://developer.twitter.com/en/docs/tweets/optimize-with-cards/overview/markup
https://developers.facebook.com/docs/sharing/webmasters/

The only things we should use meta's "name" attribute for without property are viewport, author, keywords and description (although in the case of description you can have one meta tag which has both name and property to cover both in one tag)

https://www.w3schools.com/tags/att_meta_name.asp

[Newnab]

Recommended output format:

<!-- Primary Meta Tags -->
<title>Meta Tags — Preview, Edit and Generate</title>
<meta name="title" content="Meta Tags — Preview, Edit and Generate">
<meta name="description" content="With Meta Tags you can edit and experiment with your content then preview how your webpage will look on Google, Facebook, Twitter and more!">

<!-- Open Graph / Facebook -->
<meta property="og:type" content="website">
<meta property="og:url" content="https://metatags.io/">
<meta property="og:title" content="Meta Tags — Preview, Edit and Generate">
<meta property="og:description" content="With Meta Tags you can edit and experiment with your content then preview how your webpage will look on Google, Facebook, Twitter and more!">
<meta property="og:image" content="https://metatags.io/assets/meta-tags-16a33a6a8531e519cc0936fbba0ad904e52d35f34a46c97a2c9f6f7dd7d336f2.png">

<!-- Twitter -->
<meta property="twitter:card" content="summary_large_image">
<meta property="twitter:url" content="https://metatags.io/">
<meta property="twitter:title" content="Meta Tags — Preview, Edit and Generate">
<meta property="twitter:description" content="With Meta Tags you can edit and experiment with your content then preview how your webpage will look on Google, Facebook, Twitter and more!">
<meta property="twitter:image" content="https://metatags.io/assets/meta-tags-16a33a6a8531e519cc0936fbba0ad904e52d35f34a46c97a2c9f6f7dd7d336f2.png">