Where is og metadata? I want to share post with facebook.

[re4lfl0w]

• Facebook for Developers](https://developers.facebook.com/docs/sharing/webmasters)

og:url
The canonical URL for your page. This should be the undecorated URL, without session variables, user identifying parameters, or counters. Likes and Shares for this URL will aggregate at this URL. For example, mobile domain URLs should point to the desktop version of the URL as the canonical URL to aggregate Likes and Shares across different versions of the page.
og:title
The title of your article without any branding such as your site name.
og:description
A brief description of the content, usually between 2 and 4 sentences. This will displayed below the title of the post on Facebook.
og:image
The URL of the image that appears when someone shares the content to Facebook. See below for more info, and check out our best practices guide to learn how to specify a high quality preview image.
fb:app_id
In order to use Facebook Domain Insights you must add the app ID to your page. Domain Insights lets you view analytics for traffic to your site from Facebook. Find the app ID in your App Dashboard.

How to set my nikola blog?

[Kwpolska]

• title, url, description are provided automatically
• image is provided if you use the .. previewimage: /path/to/file.img meta directive
• you must add fb:app_id yourself as a meta tag to EXTRA_HEAD_DATA (or custom templates) — follow examples on that Facebook page; it’s not required unless you really want those statistics