Technical ranking factors are the confirmed page experience and indexability signals Google uses: page speed and Core Web Vitals, mobile-friendliness, HTTPS, no intrusive interstitials, and whether the page can be crawled and indexed at all. Structured data, canonical tags and a clean site structure are not direct ranking factors, but they help Google understand and rank the page correctly.
A ranking factor is something Google has confirmed it uses to order results. On the technical side the confirmed list is shorter than most articles suggest, and most of the rest is a precondition rather than a factor.
Confirmed technical signals
- Page experience: Core Web Vitals (loading, interactivity and layout stability), measured on real users over a rolling 28-day window.
- Mobile-friendliness: Google indexes the mobile version of your site, so a page that fails on a phone fails everywhere.
- HTTPS: a small, long-standing signal.
- No intrusive interstitials: pop-ups that cover the content on mobile count against a page.
Preconditions, not factors
Crawlability and indexability are not weighed against other pages; they decide whether a page is in the race at all. Canonical tags, redirects, XML sitemaps, robots.txt and structured data all work this way. They do not add rank, they stop rank from being lost or split across duplicate URLs.
Not technical
Keyword usage is on-page SEO. Backlinks are off-page SEO. Both are real ranking inputs, but they are not what technical SEO controls, and listing them as technical factors leads people to skip the gate-keeping work above.
