What meta tags to use?

Question

Search Engine Optimization

Hello,
I am using the following design on the site:

<meta name="keywords" content="ключевые слова">
<meta name="description" content="описание">

began to study the sites of competitors and see that they use the Open Graph protocol, i.e.

<meta property="og:title" content="....."/>
          <meta property="og:description" content="....."/>
          <meta property="fb:app_id" content="....."/>
          <meta property="og:image" content="......"/>
          <meta property="og:type" content="website"/>
          <meta property="og:url" content="https://www....."/>
          <meta property="og:site_name" content="Сайт"/>
          <meta property="og:locale" content="ru_RU"/>

Please help me figure out why and how. thank.

Answer 1

https://github.com/Konfuze/HEAD

Answer 2

and now JSON-LD is already here in a bunch ...