Technical SEO checklist: 12 things holding back your growth

Insights · SEO

Technical SEO is the foundation of all visibility. Here are the 12 most common problems we find on Danish websites — problems that block growth in Google.

The checklist

  1. Client-side rendering: If your page is rendered only in JavaScript, Google sees an empty page. Server-side rendering solves it.
  2. Missing sitemap.xml: Google needs to be able to find all your pages. A sitemap helps indexing.
  3. No canonical tags: Without them, Google doesn't know which version of a page is the right one — and you risk duplicate content.
  4. Slow pages: A load time over 2 seconds costs rankings — and customers.
  5. Duplicate content: The same text on several pages dilutes your authority.
  6. Missing structured data: Schema.org markup (FAQ, Service, Organization) helps both Google and AI search.
  7. Poor internal linking structure: Important pages should be linked from important pages.
  8. No mobile-first design: Google ranks based on the mobile version.
  9. Blocked resources: If robots.txt blocks CSS/JS, Google can't understand the page.
  10. Thin content: Pages with almost no text never rank.
  11. Missing HTTPS: A requirement, not a bonus.
  12. No 404 handling: Broken links waste your crawl budget.

Want to know how many of the 12 are blocking you right now? Get a free SEO analysis here.