11 Steps to a Complete Technical SEO Audit

You know something’s wrong with your site’s performance in search, but you don’t know where to even start looking. Every “SEO checklist” you find online feels either too vague or written for someone who already knows what they’re doing.

I run technical audits constantly, and the process isn’t actually mysterious once you have a clear sequence to follow. What trips people up is jumping around randomly, checking things in no particular order, and missing the issues that actually matter most.

This is the exact process I use, laid out step by step, so you can run a genuinely thorough technical audit on your own site without guessing what to check next. I’d also suggest reading up on the core pillars of technical SEO before making changes.

Step 1: Confirm Indexing Status First

Before touching anything else, find out how much of your site Google actually has indexed, because this tells you the scale of the problem you’re dealing with.

• Search “site:yourdomain.com” directly in Google: This gives you a rough estimate of indexed pages, which you can compare against how many pages you actually believe your site has.
• Check the Pages report in Google Search Console: This gives you the real, accurate breakdown of indexed versus non-indexed pages, along with specific reasons for every exclusion.
• Note the gap between your total page count and what’s actually indexed: A large gap here is your first signal that deeper technical issues exist somewhere in the crawl or index pipeline.

Step 2: Review Robots.txt and Meta Robots Directives

Indexing problems often trace back to instructions you’re accidentally giving search engines yourself.

• Open your robots.txt file directly at yourdomain.com/robots.txt: Read every disallow rule line by line and confirm none of them are blocking sections you actually want crawled and indexed.
• Spot-check important pages for accidental noindex tags: View the page source or use the URL Inspection tool to confirm your homepage, key category pages, and top content aren’t carrying a noindex directive left over from development.
• Verify your XML sitemap isn’t itself blocked in robots.txt: This contradiction happens more often than you’d expect and quietly undermines discovery.

Step 3: Audit Your XML Sitemap

Your sitemap needs to accurately reflect your live, indexable content, so check it carefully rather than assuming it’s correct just because it exists. To see how this plays out in practice, take a look at submitting an XML sitemap.

• Confirm the sitemap is properly submitted in Search Console: and check whether Google reports any processing errors or warnings against it.
• Spot-check a sample of URLs listed in the sitemap: Confirm they return a 200 status code, aren’t duplicates, and aren’t accidentally marked noindex.
• Look for outdated or deleted URLs still listed: A sitemap that hasn’t been refreshed after content removal sends confusing signals about what actually exists on your site.

Step 4: Check Core Web Vitals and Page Speed

Performance issues affect both rankings and user experience, so this deserves real attention rather than a quick glance at one score.

• Run your key pages through PageSpeed Insights or a similar tool: Pay attention to Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift specifically, since these are the metrics that actually influence rankings.
• Test both mobile and desktop versions separately: Mobile performance matters more given mobile-first indexing, and the two often score very differently on the same site.
• Identify the specific cause behind poor scores: whether that’s unoptimized images, excessive third-party scripts, or bloated theme code, rather than just noting the score itself without understanding what’s driving it.

Step 5: Verify Mobile Responsiveness

Since Google predominantly indexes the mobile version of your site, this step isn’t optional even if most of your traffic currently comes from desktop.

• Use Google’s Mobile-Friendly Test tool on your key pages: This flags specific issues like text too small to read or clickable elements placed too close together.
• Manually browse your site on an actual mobile device: Automated tools miss things a real hands-on check catches immediately, like awkward layout shifts or broken navigation menus.

Step 6: Crawl the Entire Site With a Technical Tool

This is where you move from spot-checking to a comprehensive scan of everything on your domain.

• Run a full crawl using a tool like Screaming Frog: This surfaces broken links, redirect chains, missing meta tags, duplicate content, and a long list of other technical issues in one consolidated report.
• Sort the results by response code first: Prioritize fixing 4xx and 5xx errors before moving on to less urgent findings, since these directly block crawling and indexing.
• Export and review the full list of redirects found: Look specifically for chains where a URL redirects more than once before reaching its final destination.

Step 7: Check for Duplicate Content and Canonical Issues

Duplicate content quietly splits ranking signals, so verify your canonicalization is actually working the way you intend. If you want more depth, this academic resource on website auditing is a solid external reference.

• Review canonical tags across a sample of pages, especially product or filtered URLs: Confirm each one points to the correct, intended master version rather than the homepage or an unrelated page.
• Check for HTTP versus HTTPS or www versus non-www duplication: Confirm your site enforces one consistent version and redirects properly if someone accesses the other.
• Search for exact-phrase duplication using Google itself: Copy a distinctive sentence in quotes and search it to see if multiple URLs on your own site are competing against each other.

Step 8: Review Site Architecture and Internal Linking

Structure affects both how easily search engines crawl your site and how link equity flows between your pages.

• Map how many clicks it takes to reach your most important pages from the homepage: Anything buried more than three or four clicks deep is likely getting crawled and prioritized less than it deserves.
• Check for orphaned pages with no internal links pointing to them at all: These are essentially invisible within your own site structure, regardless of how good the content is.
• Confirm your navigation and internal linking reflect genuine content priority: Your most valuable pages should be the easiest ones to find from anywhere on the site.

Step 9: Check HTTPS and Security Configuration

This is a quick but essential check that’s easy to overlook once it’s set up correctly, but worth confirming during any full audit.

• Confirm every page loads securely under HTTPS with a valid certificate: Check for mixed content warnings, where secure pages accidentally load insecure resources like images or scripts.
• Verify HTTP automatically redirects to HTTPS sitewide: Any page still accessible over plain HTTP represents a gap in your security and consistency.

Step 10: Review Structured Data Implementation

Schema markup increasingly matters for both traditional rich results and AI-driven search visibility, so don’t skip this step.

• Use Google’s Rich Results Test on key page types: Check product pages, articles, and any page type where structured data would genuinely apply, confirming the markup validates without errors.
• Confirm the schema type actually matches the page content: Mismatched or overly aggressive schema markup can cause more harm than having none at all.

Step 11: Document Findings and Prioritize Fixes

A technical audit that just produces a long list of problems without prioritization isn’t actually useful yet.

• Rank issues by severity and reach: A robots.txt rule blocking your entire blog matters far more urgently than a handful of orphaned pages buried deep in an old archive.
• Group related issues together for efficient fixing: Multiple redirect chain problems, for instance, are often best tackled together rather than one at a time as they’re discovered.
• Set a timeline for re-auditing after fixes go live: Confirm the changes actually resolved what you thought they would, rather than assuming success without verification.

Frequently Asked Questions

Final Words

A technical SEO audit isn’t a one-time checklist you complete and forget about, it’s a discipline you build into how you maintain your site long-term. Follow this sequence honestly, fix what you find in the right order, and you’ll catch problems while they’re still small enough to matter far less than they eventually would. A closer look at auditing a website for technical issues helps explain why this matters.