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The SEO tag will respect any of the following if included in your site’s _config.yml (and simply not include them if they’re not defined):

  • title - Your site’s title (e.g., Ben’s awesome site, The GitHub Blog, etc.)
  • description - A short description (e.g., A blog dedicated to reviewing cat gifs)
  • url - The full URL to your site. Note: site.github.url will be used by default.
  • author - global author information (see Advanced usage)

  • twitter - The following properties are available:
    • twitter:card - The site’s default card type
    • twitter:username - The site’s Twitter handle. You’ll want to describe it like so:
      username: benbalter
      card: summary
  • facebook - The following properties are available:
    • facebook:app_id - a Facebook app ID for Facebook insights
    • facebook:publisher - a Facebook page URL or ID of the publishing entity
    • facebook:admins - a Facebook user ID for domain insights linked to a personal account

    You’ll want to describe one or more like so:

      app_id: 1234
      publisher: 1234
      admins: 1234
  • logo - URL to a site-wide logo (e.g., /assets/your-company-logo.png) - If you would like the “publisher” property to be present, you must add this field to your site’s configuration, during the validation of the structured data by Google web master tools, if the logo field is not validated, you will find errors inherent to the publisher in the structured datas test
  • social - For specifying social profiles. The following properties are available:
    • name - If the user or organization name differs from the site’s name
    • links - An array of links to social media profiles.
    • date_modified - Manually specify the dateModified field in the JSON-LD output to override Jekyll’s own dateModified. This field will take first priority for the dateModified JSON-LD output. This is useful when the file timestamp does not match the true time that the content was modified. A user may also install Last Modified At which will offer an alternative way of providing for the dateModified field.
      name: Ben Balter
  • google_site_verification for verifying ownership via Google webmaster tools
  • Alternatively, verify ownership with several services at once using the following format:
  google: 1234
  bing: 1234
  alexa: 1234
  yandex: 1234
  baidu: 1234
  • lang - The locale these tags are marked up in. Of the format language_TERRITORY. Default is en_US.

The SEO tag will respect the following YAML front matter if included in a post, page, or document:

  • title - The title of the post, page, or document
  • description - A short description of the page’s content
  • image - URL to an image associated with the post, page, or document (e.g., /assets/page-pic.jpg)
  • author - Page-, post-, or document-specific author information (see Advanced usage)
  • lang - Page-, post-, or document-specific language information

Note: Front matter defaults can be used for any of the above values as described in advanced usage with an image example.