Technical SEO Audit: 15 Website Errors That Can Hurt Your Google Rankings

You can have excellent content and still have technical problems preventing your website from performing properly in Google Search. That is why a technical SEO audit should be part of your website maintenance process.

Technical SEO is not about finding a secret ranking trick. It is about making sure search engines can access your website, crawl important pages, understand your content, index the right URLs, render the website properly, understand relationships between pages and provide a good experience for visitors.

1. Your Website Doesn’t Use HTTPS Properly

HTTPS encrypts communication between the browser and website. Check that the HTTPS version works correctly and that HTTP URLs redirect appropriately to your preferred HTTPS URLs.

• HTTP homepage
• HTTPS homepage
• HTTP internal page
• HTTPS internal page
• www/non-www versions

2. Robots.txt Blocks Important Pages

Robots.txt can tell crawlers which URLs or paths they should not crawl. A mistake such as Disallow: / can prevent crawling across the site. Do not copy a robots.txt file from another website without understanding it.

3. Important Pages Have a Noindex Directive

A noindex directive tells search engines not to include a page in their index. This can be useful for certain utility or duplicate pages, but it becomes a problem when accidentally applied to your homepage, service pages, important blog posts, category pages or product pages.

4. Incorrect Canonical URLs

Canonical tags help communicate the preferred version of substantially similar URLs. Check whether your canonical points to the correct URL, uses HTTPS, uses the preferred domain version and is not accidentally pointing to another page.

5. Broken Internal Links

A broken link sends users or crawlers to a URL that does not work correctly. Common causes include deleted pages, changed URLs, typos, expired products and incorrect redirects. Audit important pages regularly.

6. Redirect Chains

If Page A redirects to Page B, then C, then D, you have a redirect chain. Where appropriate, a cleaner setup is Page A → Page D. Redirects are useful when URLs genuinely change, but unnecessary chains add complexity.

7. Duplicate URLs

Your website may create multiple URLs for similar content through URL parameters, category structures, tags, pagination, ecommerce filters or tracking parameters. Do not automatically delete every duplicate-looking URL. First understand why it exists and whether it should be indexed.

8. Missing or Poor XML Sitemap

An XML sitemap helps search engines discover URLs you consider important. WordPress SEO plugins commonly generate sitemaps automatically, but you should still verify that the sitemap works and contains the URLs you expect.

<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url><loc>https://example.com/</loc></url>
  <url><loc>https://example.com/services/</loc></url>
</urlset>

9. Poor Mobile Experience

Your website should be easy to use on smartphones. Check navigation, buttons, font size, forms, images, menus, tables, checkout, sticky elements and horizontal scrolling.

10. Poor LCP

LCP = Largest Contentful Paint. It measures loading performance for the largest main content element. A good LCP target is 2.5 seconds or less.

Common causes of poor LCP include large hero images, slow hosting, render-blocking resources, excessive JavaScript, poorly optimized fonts and third-party scripts.

Improvement ideas

• Compress images
• Use modern image formats
• Optimize hosting
• Reduce unnecessary scripts
• Preload critical resources carefully
• Use caching
• Optimize above-the-fold content

11. Poor INP

INP = Interaction to Next Paint. It measures how responsive a page feels when users interact with it. A good INP target is 200 milliseconds or less. Heavy scripts, excessive plugins, large JavaScript bundles, third-party tracking and inefficient code can hurt responsiveness.

12. High CLS

CLS = Cumulative Layout Shift. It measures unexpected visual movement. A good CLS target is 0.1 or less. Common causes include images without dimensions, dynamically injected content, ads, font changes and banners appearing late.

<img src="hero.jpg" width="1200" height="700" alt="Small business website design">

13. Poor Site Architecture

Your website should have a logical hierarchy that makes important sections easy to find.

14. Orphan Pages

An orphan page exists without useful internal links pointing to it. If you publish /technical-seo-audit/ but no relevant page links to it, users may never discover it through normal navigation. Add relevant contextual links from related pages.

15. Server Errors

Not every 404 is an emergency. The important question is whether the missing URL is valuable, linked internally, receiving traffic, or should redirect somewhere genuinely relevant.

Technical SEO Audit Tools

Google Search Console

Useful for indexing, search performance, URL inspection, search queries and technical reports.

PageSpeed Insights

Useful for Core Web Vitals, performance opportunities and mobile/desktop testing.

Lighthouse

Useful for analyzing performance, accessibility, SEO and best practices.

Technical SEO Audit Workflow

Technical SEO Audit Checklist

Crawlability

• Robots.txt checked
• Important pages accessible
• No accidental blocks
• Server responses work

Indexing

• Important pages indexed
• No accidental noindex
• Canonicals correct
• Sitemap submitted

Performance

• LCP reviewed
• INP reviewed
• CLS reviewed
• Images optimized
• JavaScript reviewed
• Hosting reviewed

Architecture & Mobile

• Logical navigation
• Useful internal links
• No important orphan pages
• Clear URL structure
• Responsive design
• Readable text
• Usable buttons and forms
• No horizontal scrolling

How Often Should You Perform a Technical SEO Audit?

For a small website, consider a mini-check monthly, a performance review monthly, a technical audit every three to six months, and a major audit after a redesign, migration, domain change, CMS change or significant technical modification. Large ecommerce websites may require more frequent monitoring.

Final Thoughts

Technical SEO is not about achieving a perfect score in every tool. Think of it as infrastructure. Your website needs to be accessible, crawlable, indexable, understandable, mobile-friendly, reasonably fast, logically structured and reliable.

Once that foundation is strong, your content and marketing efforts have a much better technical environment in which to perform.

What to prioritize first

Putting the recommendations into a practical 30-day plan

Week 1: establish the baseline

Write down the business goal and select a small number of representative URLs. Confirm that analytics and Search Console are collecting the information you need. Check whether your important pages are reachable, usable on mobile and aligned with their intended search queries. Save screenshots or exports before changes begin; otherwise you may not be able to explain what improved.

Week 2: fix the most consequential problems

Address blockers first: inaccessible pages, broken conversion paths, incorrect indexing rules or misleading business information. Then move to high-impact opportunities that affect a valuable page or an entire template. Assign each task an owner, a test method and a completion date. Do not spend the whole week adjusting metadata if the actual problem is a broken service form.

Week 3: improve content and user experience

Rewrite sections that fail to answer the visitor’s question, add clear examples and evidence, improve internal navigation, and simplify the next action. For Zarma Tech-style service pages, visitors should understand the deliverable, process, typical constraints and contact route without having to guess. Publish only changes you can stand behind as accurate.

Week 4: verify and report

Recheck the original URLs and journeys. Record what changed, what remains uncertain and what needs more time. Compare meaningful search and business metrics without attributing every fluctuation to your work. Build the next month’s backlog from verified problems rather than from an arbitrary list of SEO tasks.

Frequently asked questions

Is every 404 an SEO emergency?

No. A genuine removed URL can return 404. Prioritize broken internal links and valuable URLs that should exist or redirect to a truly relevant replacement.

How long should I wait before deciding whether a change worked?

Allow enough time for crawling, indexing, user behavior and normal demand variation to become visible. For technical fixes, confirm the new page state first. For content and competitive changes, compare sensible periods rather than expecting immediate ranking changes.

Which metric matters most?

Choose a metric that matches the page’s purpose. Indexability is foundational; impressions and clicks reveal search visibility; qualified leads and revenue reveal commercial outcomes. One metric rarely explains the full journey.

Should I buy an SEO package to solve this faster?

First identify the actual problem and the scope of work. A well-defined audit or targeted implementation may be more valuable than a package promising large numbers of keywords, links or articles.

Can Rank Math Pro solve this automatically?

Rank Math can assist with metadata, sitemaps, schema and certain checks, but it cannot replace useful content, appropriate architecture, reliable hosting, real customer evidence or thoughtful analysis.

Should I change everything on the page at once?

Usually not. Prioritize changes by impact and document what you changed. When multiple issues must be fixed together, record the bundle so later performance changes are interpreted cautiously.

Does Google guarantee results after I follow these steps?

No. Technical eligibility and best practices do not guarantee indexing, rankings, traffic or inclusion in AI features. Search performance also depends on relevance, competition, demand and many other factors.

Further reading and primary sources

• Google Search Essentials
• Google Search technical requirements
• Google people-first content guidance
• Google Search Console
• Google Search Central SEO starter guide