Technical SEO Audit Checklist: What to Review Before You Publish More Content

Site architecture

Architecture is how you communicate priority. Pages that matter commercially should sit close to the home page, be linked from relevant sections, and use consistent descriptive URLs. If an important service page is reachable only from the footer, you have told search systems it is peripheral.

Look for orphaned pages with no internal links, for sections that have grown into overlapping duplicates, and for navigation that describes internal departments rather than customer needs. Group related content into clear clusters with one primary page per topic and supporting pages linking back to it. This helps interpretation and, more importantly, helps people find the next step.

Performance and Core Web Vitals

Performance work should be grounded in real user data rather than a single lab score. Look at how pages behave on mid-range mobile devices and slower connections, because that is where most losses occur. The usual culprits are oversized images, render-blocking scripts, third-party embeds, fonts that block text, and layout that shifts as elements load.

Fix the largest contributors first: compress and correctly size images, defer non-critical scripts, reserve space for anything that loads late, and question every third-party tag. Speed is not only a search consideration—slow pages lose enquiries and orders regardless of where the visitor came from.

• Images sized, compressed and lazy-loaded below the fold.
• Non-critical scripts deferred; unused third-party tags removed.
• Explicit dimensions to prevent layout shift.
• Fonts loaded without blocking text rendering.

Canonicalisation and redirects

Duplicate access paths quietly split signals. Confirm that one protocol and hostname is canonical and that all variants redirect to it in a single hop. Check trailing-slash consistency, uppercase variants, tracking-parameter versions and print or AMP-style alternates. Each page should declare a self-referencing canonical unless it genuinely consolidates to another URL.

Redirect hygiene matters just as much. Chains and loops waste crawl effort and lose value; redirects to irrelevant destinations frustrate users and are often treated as soft errors. When retiring pages, map each one to the closest equivalent, and keep a record so future migrations do not compound old mistakes.

Structured data and sitemaps

Your sitemap should list the canonical, indexable URLs you actually want found—nothing redirected, blocked or duplicated. Keep it generated rather than hand-maintained, and reference it from your robots file. Treat it as a statement of intent that should agree with your canonical tags and internal links.

For structured data, mark up the entities that genuinely describe each page and validate after every template change. Structured data supports understanding and can enable richer presentation, but it is not a ranking mechanism and it cannot rescue a page that answers nothing. Accuracy and maintenance matter more than breadth of coverage.

Prioritising fixes

An audit that produces a hundred undifferentiated issues stalls. Sort findings by whether they block access, distort interpretation, or merely represent best practice. Anything preventing indexing of commercially important pages goes first. Duplication and canonical conflicts come next, because they undermine every subsequent improvement. Performance and refinement follow.

Then weigh effort honestly. A change requiring a developer release competes with content work for the same limited attention, so sequence around what will actually ship. Re-check the fixed items after deployment; unverified fixes have a habit of reappearing with the next template update.