If you want your website to perform well in search engines, you can’t rely on content and backlinks alone. Technical SEO is the foundation that supports visibility, speed, and usability, and a technical audit ensures that the foundation is solid.
Whether you’re a marketing manager trying to understand your site’s SEO performance or a beginner in technical SEO, this guide walks you through the key steps to conduct an effective audit that can genuinely improve your rankings.
1. Crawl Your Website with an SEO Tool
The first step in a technical SEO audit is to see your site the way a search engine sees it. Using a crawling tool like Screaming Frog, Sitebulb, or Semrush, you can simulate a search engine bot and uncover common technical issues.
What you’re looking for:
- Missing or duplicate meta titles and descriptions
- Improper use of heading tags
- Broken links
- Redirect chains or loops
- Incorrect canonical tags
- Non-indexable pages
Running a crawl gives you a snapshot of your site’s health and uncovers issues that can directly impact how Google views and ranks your site. Think of it as your technical sitemap.
Tip: Export the crawl data and filter by status codes, noindex tags, and duplicate content to prioritise fixes.
2. Check for Mobile Friendliness
With Google’s mobile-first indexing, your site’s mobile version is now the primary version considered for ranking. Ensuring it works flawlessly on mobile devices is no longer optional.
Use Google’s Mobile-Friendly Test to see how your site performs. It will show you if:
- Content is wider than the screen
- The text is too small to read
- Clickable elements are too close together
- Mobile viewport is not set
Also, manually test your site on a few devices. Automated tools are helpful, but real-world use can uncover layout bugs, navigation issues, or annoyances like intrusive pop-ups.
Tip: A responsive design one that adjusts based on screen size is the most reliable way to achieve mobile friendliness.
3. Review Page Speed and Load Time
Page speed is both a ranking factor and a user experience. A slow website frustrates users and causes bounce rates to rise, both of which hurt your SEO.
Use tools like:
These tools offer insights into Core Web Vitals a set of metrics that include:
- Largest Contentful Paint (LCP): Measures loading performance.
- First Input Delay (FID): Measures interactivity.
- Cumulative Layout Shift (CLS): Measures visual stability.
Common culprits for slow load times:
- Large image files
- Excessive JavaScript
- Inefficient CSS
- Server response time
Tip: Aim for an LCP of under 2.5 seconds, FID under 100ms, and CLS under 0.1.
4. Ensure Proper Indexing and Crawling
If search engines can’t access or index your pages, they won’t rank no matter how good your content is.
Start with Google Search Console:
- Check the Coverage report to identify indexing issues
- Review the URL Inspection tool to see how Google views specific pages
- Confirm your XML sitemap is submitted and accurate
Also, review your robots.txt file and meta robots tags. Look for anything that may accidentally block search engines from accessing important pages (e.g., Disallow directives or “noindex” tags on key content).
Tip: Use the “site:” search operator (e.g., site:yourdomain.com) in Google to see what pages are currently indexed.
5. Check for Duplicate Content
Duplicate content confuses search engines and dilutes ranking potential. It can occur unintentionally due to:
- URL variations (with/without www, HTTP vs HTTPS)
- Pagination
- Session IDs
- Printer-friendly versions of pages
Use your crawling tool or a dedicated duplicate content checker like Siteliner or Copyscape to identify internal duplication. For external duplication, tools like Copyscape are helpful to see if others are copying your content.
Fixes may include:
- Canonical tags to signal the preferred version of a page
- 301 redirects to consolidate duplicate URLs
- Parameter handling in Google Search Console
Tip: Avoid using duplicate meta titles and descriptions across different pages this is an easy win.
6. Fix Broken Links
Broken links (404 errors) not only disrupt user experience but can also waste crawl budget the amount of time and resources search engines spend crawling your site.
How to identify them:
- Use your SEO crawler to find internal and outbound links leading to 404 pages
- Check the “Not Found” errors in Google Search Console
Once found, decide whether to:
- Redirect them (via 301) to a relevant page
- Replace or remove them
- Restore the missing content (if removed in error)
Tip: Regularly audit your links, especially after content changes or migrations.
7. Optimise Internal Linking Structure
Internal links help search engines understand site architecture and distribute authority between pages. A good internal linking strategy can:
- Improve crawlability
- Pass link equity to important pages
- Reduce orphan pages (pages with no links pointing to them)
Things to check:
- Every important page should be accessible within 3 clicks from the homepage
- Anchor text should be descriptive and relevant (avoid “click here”)
- Fix orphaned pages by linking to them from relevant content
- Use breadcrumbs to improve navigation
Also consider using a flat site structure where most pages are only a few clicks away from the homepage to make your site easier to crawl and understand.
Tip: Link from high-authority pages (like your homepage or cornerstone content) to newer or underperforming pages to boost their visibility.
A technical SEO audit isn’t just a tick-box exercise it’s a way to remove hidden barriers that stop your content from reaching its full potential. Even if you’re not an SEO specialist, understanding the basics of site health can help you collaborate more effectively with developers, agencies, or your in-house SEO team.
By regularly auditing and maintaining your website’s technical foundation, you set the stage for better rankings, faster performance, and a smoother user experience.
