What is On-Page SEO?
Optimizing individual pages: titles, headings, content depth, internal links, images, and schema. On-page work decides relevance once technical SEO has made the page reachable.
Related terms
Title Tag
The clickable headline in search results and the strongest on-page relevance signal. Google rewrites most titles, so clarity and completeness beat rigid length rules.
Heading Hierarchy
The nested H1→H2→H3 outline of a page. A clean hierarchy lets readers scan and lets parsers chunk sections accurately for retrieval and snippets.
Internal Link
A link between pages on the same site, guiding discovery and distributing relevance. Controlled tests show deliberate internal-link changes lifting organic traffic 5–25%, and underlinked priority pages are a standard audit finding.
Meta Description
The optional summary that can become the result snippet. Absence is not a penalty and Google rewrites most descriptions, so prioritize valuable pages where controlled wording earns clicks.
H1 Tag
The page’s primary heading naming its topic. Exactly one per page, matching search intent; everything else nests below it in the heading hierarchy.
Topic Cluster
A pillar page surrounded by interlinked subtopic pages. Clusters make coverage legible to crawlers and readers at once, and internal links bind them into one structure.