Technical SEO audits have a habit of turning into fifty-item checklists where a missing meta description gets the same visual weight as a broken canonical tag. It isn't the same problem. Some technical issues quietly cap your traffic; others are cosmetic. This is the short list of things worth fixing first, in the order they tend to matter.

1. Confirm Google can actually reach and render the page

Before anything else, check three things in Google Search Console: coverage status, the URL Inspection tool's rendered HTML, and whether your robots.txt is accidentally blocking a section of the site. A page that looks fine in a browser but returns a blank shell to Googlebot — common on JS-heavy sites without server-side rendering — will never rank no matter how good the content is.

2. Fix indexing before you touch anything else

A page that isn't indexed can't rank. Common causes worth checking, in order of frequency:

  • Accidental noindex tags left over from staging
  • Canonical tags pointing to the wrong URL (self-referencing canonicals are the safe default)
  • Duplicate content getting consolidated onto a URL you didn't intend
  • Thin or near-duplicate pages Google has decided aren't worth a crawl budget

3. Site speed — but the metrics that correlate with rankings, not vanity scores

Core Web Vitals (Largest Contentful Paint, Interaction to Next Paint, Cumulative Layout Shift) are a confirmed ranking factor, but a 100/100 Lighthouse score isn't the goal — passing the field-data thresholds is. Check the Core Web Vitals report in Search Console, which uses real user data (CrUX), not a single lab test. A site that passes CWV with a 75 Lighthouse score is fine; a site that fails CWV with a 100 Lighthouse score has a real problem the lab test didn't catch.

4. Internal linking depth

Pages more than three or four clicks from the homepage get crawled less often and pass less authority. Run a crawl (Screaming Frog, Sitebulb, or similar) and sort by crawl depth. Orphaned pages — pages with zero internal links pointing to them — are effectively invisible to search engines regardless of their content quality.

5. XML sitemap accuracy

A sitemap that includes noindexed, redirected, or 404 URLs sends mixed signals and wastes crawl budget. It should contain exactly the canonical, indexable URLs you want crawled — nothing else. If your CMS auto-generates it, audit a sample against Search Console's actual indexed count periodically; drift between the two is a signal something changed upstream.

6. Structured data validity, not just presence

Having schema markup on a page doesn't help if it's invalid or mismatched to the visible content — Google's guidelines require structured data to reflect what a user actually sees. Use the Rich Results Test on a sample of templates, not just individual pages, since a broken schema template breaks every page built from it at once.

7. HTTPS and redirect chains

A single 301 redirect is fine. Three redirects in a chain (http → www → https → final-url) burns crawl budget and slightly dilutes link equity at each hop. Audit for redirect chains after any domain migration or URL structure change — they accumulate silently over time.

What to skip on a first pass

Meta description length, exact title tag character counts, and keyword density are worth cleaning up eventually, but they aren't why a site fails to rank. If you're triaging a site with real ranking problems, indexing and crawlability come first, speed and internal linking second, and copy-level polish last. Fixing the polish items before the structural ones is how technical SEO audits turn into forty-item lists that never move the needle.