Technical SEO
HTML (Hyper Text Markup Language)
HyperText Markup Language (HTML) is the standard markup language for creating web pages, maintained by the W3C and WHATWG. HTML uses a system of elements represented by tags to structure content — headings, paragraphs, links, images, and forms. It is the foundational layer of every webpage that Googlebot crawls and indexes.
HTML quality is audited using the W3C Markup Validation Service, Screaming Frog (for tag-level issues), and Google Search Console's URL Inspection tool (for rendered HTML). Clean, semantic HTML with proper heading hierarchy, canonical tags, and structured data helps search engines accurately interpret and index page content.
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Related Terms
Technical SEO
Canonical Tag
An HTML `<link rel="canonical">` element in the page head that tells search engines which URL is the authoritative version when duplicate or near-duplicate content exists across multiple URLs.
Technical SEO
CSS
A markup language that helps visually shape the elements of a web page.
Content
Heading Tags
Refer to tags that provide information about the hierarchy of content on a web page.
Technical SEO
JavaScript
A popular software language that adds functionality, interaction, and dynamism to the page.