Meta Variables 
The seomatic.meta variable contains all of the meta variables that control the SEO that will be rendered on the site. They are pre-populated from your settings and content in the control panel, but you can change them as you see fit.
General Variables 
seomatic.meta.mainEntityOfPage– The schema.org type that represents the main entity of the page.seomatic.meta.seoTitle– The title that is used for the<title>tag.seomatic.meta.siteNamePosition– controls where theseomatic.site.siteNameappears relative to theseomatic.meta.seoTitlein the<title>tag. Valid values arebefore,after, ornone.seomatic.meta.seoDescription– The description that is used for the<meta name="description">tag.seomatic.meta.seoKeywords– The keywords that are used for the<meta name="keywords">tag. Note that this tag is ignored by Google.seomatic.meta.seoImage– The image URL that is used for SEO image.seomatic.meta.seoImageWidth– The width of the SEO image.seomatic.meta.seoImageHeight– The height of the SEO image.seomatic.meta.seoImageDescription– A textual description of the SEO image.seomatic.meta.canonicalUrl– The URL used for the<link rel="canonical">tag. By default, this is set to{seomatic.helper.safeCanonicalUrl()}or{entry.url}/{category.url}/{product.url}, but you can change it as you see fit. This variable is also used to set thelink rel="canonical"HTTP header.seomatic.meta.robots– The setting used for the<meta name="robots">tag that controls how bots should index your site. This variable is also used to set theX-Robots-TagHTTP header. Learn More
Facebook Open Graph Variables 
seomatic.meta.ogType– The value used for the<meta property="og:type">tag, such aswebsiteorarticle.seomatic.meta.ogTitle– The value used for the<meta property="og:title">tag. This defaults to{seomatic.meta.seoTitle}.seomatic.meta.ogSiteNamePosition– controls where theseomatic.site.siteNameappears relative to theseomatic.meta.ogTitlein the<meta property="og:title">tag. Valid values arebefore,after, ornone.seomatic.meta.ogDescription– The value used for the<meta property="og:description">tag. This defaults to{seomatic.meta.seoDescription}.seomatic.meta.ogImage– The value used for the<meta property="og:image">tag. This defaults to{seomatic.meta.seoImage}.seomatic.meta.ogImageWidth– The width of the ogImage. This defaults to{seomatic.meta.seoImageWidth}.seomatic.meta.ogImageHeight– The height of the ogImage. This defaults to{seomatic.meta.seoImageHeight}.seomatic.meta.ogImageDescription– The value used for the<meta property="og:image:alt">tag. This defaults to{seomatic.meta.seoImageDescription}.
Twitter Variables 
seomatic.meta.twitterCard– The value used for the<meta name="twitter:card">tag, such assummaryorsummary_large_image.seomatic.meta.twitterCreator– The value used for the<meta name="twitter:creator">tag. This defaults to{seomatic.site.twitterHandle}.seomatic.meta.twitterTitle– The value used for the<meta name="twitter:title">tag. This defaults to{seomatic.meta.seoTitle}.seomatic.meta.twitterSiteNamePosition– controls where theseomatic.site.siteNameappears relative to theseomatic.meta.twitterTitlein the<meta name="twitter:title">tag. Valid values arebefore,after, ornone.seomatic.meta.twitterDescription– The value used for the<meta name="twitter:description">tag. This defaults to{seomatic.meta.seoDescription}.seomatic.meta.twitterImage– The value used for the<meta name="twitter:image">tag. This defaults to{seomatic.meta.seoImage}.seomatic.meta.twitterImageWidth– The width of the Twitter image. This defaults to{seomatic.meta.seoImageWidth}.seomatic.meta.twitterImageHeight– The height of the Twitter image. This defaults to{seomatic.meta.seoImageHeight}.seomatic.meta.twitterImageDescription– The value used for the<meta name="twitter:image:alt">tag. This defaults to{seomatic.meta.seoImageDescription}.