What is on-page SEO?

On-page SEO covers everything you directly control on a given page: the title tag, headers, body content, image alt text, and internal links, all optimized around a target keyword and the searcher's genuine underlying intent.

It is distinct from off-page SEO, which covers signals from entirely outside the page, like backlinks, and from technical SEO, which covers the site's underlying structure and crawlability rather than the page content itself.

Good on-page SEO starts with genuinely answering the question the keyword implies, then layering in the structural details afterward, not the other way around, since structure alone never rescues a page that misses the point.

Every page from automatic SEO software is built around that intent-first structure by default.