Home / Insights / Guide

What is on-page SEO?

On-page SEO is the work done on the pages of your own website to help them appear in search: the words, the headings, the titles and the links between pages. It sits alongside off-page SEO and technical SEO, and a site needs all three.

What does on-page SEO include?

  • Content. Pages that answer what people search for, in the words they use.
  • Titles and descriptions. The lines shown in the search results, which decide whether anyone clicks.
  • Headings. A clear order that tells readers and search engines what each section covers.
  • Internal links. Links between your own pages, so the important ones are easy to reach.
  • Images. Described in text, and small enough to load quickly.

What is the difference between on-page, off-page and technical SEO?

On-page SEOOff-page SEOTechnical SEO
Where the work happensOn your pagesOn other websitesIn your site’s code and server
What it coversContent, titles, headings, internal linksLinks, reviews and mentionsSpeed, crawling, indexing, structured data
What it tells a search engineWhat the page is aboutWhether others trust itWhether the page can be read at all

What is off-page SEO?

Off-page SEO is everything that builds your reputation away from your own site. The largest part is links from other websites. Our guide explains what a backlink is and what makes a good one.

What is technical SEO?

Technical SEO makes sure search engines can reach, read and store your pages. It covers page speed, mobile layout, broken links, redirects and the structured data that labels your content.

Which should come first?

Many SEOs start with technical, then on-page, then off-page, because there is little point earning links to a page a search engine cannot read. An SEO audit shows which of the three is holding a site back.

Related service: SEO agency from A10 Digital.

© 2026 A10 Digital Limited. Registered in England, company number 15751823.