Technical SEO audit
A technical SEO audit is how you turn scattered symptoms into a clear diagnosis. This guide now absorbs the broader audit content too, so it covers crawl, indexation, duplication, site quality signals, migrations, and performance in one structured process that is useful for both smaller websites and large template-driven systems.
Indexation, crawl, and duplication
Start by checking which URLs are indexable, which are excluded, and where crawl attention is being wasted. Review robots.txt, noindex, canonicals, sitemaps, redirects, and internal links together, because indexation failures usually come from several systems interacting rather than one isolated setting. Pay particular attention to duplicated or low-value page groups that distort crawl behaviour.
- Check robots, noindex, canonicals, and sitemaps together
- Audit duplicated and low-value URL groups
- Confirm key templates are discoverable and indexable
Performance, trust, and prioritisation
Once the crawl and indexation picture is clear, audit template speed, Core Web Vitals, and the page groups most affected by traffic loss or visibility decline. If the site has suffered a sharper drop, investigate quality, reputation, and algorithm-related signals as well. A good technical audit does not stop at finding issues. It ranks them by commercial impact and by how broadly they affect the site.
- Measure template-level performance issues
- Check for traffic-drop and quality signals
- Prioritise fixes by impact and scale