Multi-page websites distribute their SEO signals across dozens or hundreds of URLs. Each page can target a specific keyword, earn its own backlinks, carry its own title tag, and build topical authority in a narrow area. One-page sites have to accomplish all of that within a single document.
That constraint is not a death sentence for rankings. In our experience working with single-page sites, the ones that rank share a deliberate structural approach — they treat each section the way a traditional site treats a page. The ones that fail usually treat the page like a brochure: one blob of content with no internal architecture.
The seven mistakes below represent the patterns we see most consistently. None of them are obscure. Most are fixable without a rebuild. But leaving even two or three of them in place is usually enough to keep a one-page site buried past position 20 for anything competitive.
Who this guide is for: Business owners and web designers managing single-page websites who are getting little to no organic traffic despite having a live, indexed site. If you have not yet built your site, the one-page website SEO hub is a better starting point.