If your website has great content but still isn’t ranking, the problem usually isn’t your writing — it’s your technical foundation. A technical SEO audit uncovers the hidden issues that stop search engines from crawling, indexing, and ranking your pages the way they should.
This guide walks you through exactly how to run a complete technical SEO audit, step by step, so you can find and fix the issues that are quietly costing you traffic.
What Is a Technical SEO Audit?
A technical SEO audit is a systematic review of your website’s infrastructure — the behind-the-scenes elements that affect how search engines crawl, render, and index your pages,as outlined in Google’s SEO Starter Guide. Unlike content or keyword audits, a technical audit focuses on site performance, structure, and accessibility rather than the words on the page.
Why Technical SEO Matters
Search engines can only rank pages they can find, crawl, and understand. If technical issues block that process, even the best content will underperform. A strong technical foundation improves:
- Crawl efficiency and indexing speed
- Page load times and Core Web Vitals scores
- Mobile usability and user experience
- Your site’s overall trust and authority with search engines
Step 1: Check Crawlability and Indexing
Before anything else, confirm that search engines can actually access your site.
Review Your Robots.txt File
Your robots.txt file tells search engines which pages they can and cannot crawl. Check it for accidental disallow rules that might be blocking important pages.
Audit Your XML Sitemap
Make sure your sitemap is up to date, submitted in Google Search Console, and free of broken or non-indexable URLs.
Identify Indexing Issues
Use Google Search Console’s Page Indexing report to find pages marked as “Crawled – currently not indexed” or “Discovered – currently not indexed,” and investigate why.
Step 2: Analyze Site Speed and Core Web Vitals
Page speed is both a ranking factor and a major driver of user experience.
Measure Core Web Vitals
Check your Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS) scores using PageSpeed Insights or Search Console.
Common Speed Issues to Fix
- Unoptimized or oversized images
- Render-blocking JavaScript and CSS
- Lack of browser caching
- Slow server response times (TTFB)
Step 3: Review Site Architecture and Internal Linking
A clear site structure helps both users and search engines navigate your content.
Evaluate URL Structure
URLs should be short, descriptive, and consistent — avoiding unnecessary parameters or deep nesting.
Check Internal Linking
Make sure important pages are reachable within a few clicks from your homepage, and that you’re using descriptive anchor text rather than generic phrases like “click here.”
Step 4: Fix Mobile Usability Issues
With mobile-first indexing, Google primarily uses the mobile version of your site for ranking.
Test Mobile Responsiveness
Use Google’s Mobile-Friendly Test to identify elements that don’t render properly on smaller screens.
Check for Intrusive Interstitials
Pop-ups that block content on mobile can hurt both rankings and user experience.
Step 5: Audit Structured Data and Metadata
Structured data helps search engines understand your content and can unlock rich results.
Validate Schema Markup
Use Google’s Rich Results Test to check for errors in your structured data implementation.
Review Title Tags and Meta Descriptions
Ensure every page has a unique, descriptive title tag and meta description within recommended character limits.
Step 6: Identify and Fix Duplicate Content
Duplicate content confuses search engines about which version of a page to rank.
Use Canonical Tags Correctly
Make sure canonical tags point to the preferred version of each page, especially for e-commerce filters or paginated content.
Check for HTTP vs HTTPS and WWW vs Non-WWW Issues
Confirm your site redirects consistently to one preferred version.
Step 7: Fix Broken Links and Redirect Errors
Broken links waste crawl budget and hurt user experience.
Run a Broken Link Check
Use a crawler tool like Screaming Frog to find 404 errors across your site.
Clean Up Redirect Chains
Multiple redirects in a row (redirect chains) slow down crawling and dilute link equity — fix these by pointing directly to the final URL.
Final Thoughts
A technical SEO audit isn’t a one-time task — it’s an ongoing process that keeps your website healthy as it grows. Running through these steps regularly helps you catch issues early, before they impact your rankings and traffic.
If you’d rather have experts handle it for you, Forge Metrix’s SEO team can run a full technical audit and fix these issues for you — get in touch today.
