Why Is Your Website Dropping on Google? Check These 7 Technical Mistakes

You wake up one morning and your site has slipped a few positions. Or visitor numbers have been slowly declining for months and you just can't pinpoint why. You pour effort into content — new posts, new pages. But the real problem is usually somewhere else entirely. Technical SEO errors directly affect whether search engines can read your site correctly. Google can't rank what it can't see.

In 2026, this picture has become even more critical. Google's AI-powered search summaries (AI Overviews) now appear in nearly every other query. That's both an opportunity and a threat: a site with technical problems loses out on both rankings and AI summaries — a double penalty. The good news is that most of these errors can be found with free tools and fixed starting today.

Mistake 1: You Are Blocking Your Own Pages Without Realising It

There's a file called robots.txt that tells Google's bots which pages to crawl and which to skip. A single wrong line in that file can hide your entire site from Google. Similarly, some pages may be accidentally tagged with a 'noindex' label — essentially telling Google 'ignore this page.' These kinds of errors frequently appear after a website redesign or theme change. To check: open Google Search Console, go to the 'Indexing' section, and look at the 'Pages' report. You'll see exactly how many pages are excluded and why.

Mistake 2: Broken Links and 404 Pages Are Doing Silent Damage

When you delete a page or change its URL, other pages that still link to the old address remain. Google's bot follows those broken links, hits a 404 error, wastes time — and can't use that time to crawl your actual pages. On top of that, if an external site links to your old URL, the 'authority' from that link never reaches you. To find broken links, check the 'Coverage' report in Search Console. Redirect broken URLs to the most relevant page — redirecting everything to the homepage can actually make rankings worse.

Mistake 3: In Turkey, Having a Slow Site Is Not a Luxury Problem — It's a Penalty

The sites on Google's first page load in an average of 2.5 seconds. The average Turkish business website takes over 13 seconds to load on mobile. The gap between these two numbers translates into a real cost in search rankings. Google measures these technical metrics under the name 'Core Web Vitals' across three areas: how quickly the main content appears (LCP), how fast it responds to a tap or click (INP), and whether elements jump around as the page loads (CLS). When content and authority are equal between two sites, these metrics become the deciding factor. To test your own site, go to PageSpeed Insights and enter your address — pay close attention to the mobile score.

Mistake 4: The Mobile Version Is No Longer a Bonus — It Is the Primary Version

Since 2024, Google has completed its 'mobile-first indexing' rollout for all sites. It now ranks sites based on their mobile version, not their desktop version. So a site that looks great on desktop but falls apart on mobile gets penalised. And this goes far beyond 'does it open on a phone.' If your mobile version has less content than your desktop version, your long-tail search rankings can drop. If a large pop-up appears while the page is loading, Google treats that as a negative signal. The 'Mobile Usability' report in Search Console will list these issues one by one.

Mistake 5: Every Page Needs Its Own Identity

The title tag and meta description are two fundamental elements that tell both Google and users what a page is about. Yet research shows that more than half of all websites use the same title across every page. If 'My Website - Blog' appears on every blog post, Google can't work out which page is the authority on which topic. Each page needs a unique title that directly relates to that specific page. Don't leave the meta description blank either — Google now rewrites more than half of them itself, but without raw material to work from, the results can be arbitrary.

Mistake 6: Duplicate Content — Often Without You Even Knowing

We're not talking about copying from others. Duplicate content caused by technical reasons is far more common and far more insidious. If you run an e-commerce site, for instance, filter combinations can generate hundreds or even thousands of nearly identical URLs. 'www.yoursite.com/products' and 'yoursite.com/products', or HTTP and HTTPS versions, can be counted as two separate pages by Google. When that happens, link value gets split, Google can't determine which page to promote, and sometimes ranks neither. The canonical tag solves this: you're pointing Google to 'this is the definitive version of this page.' But be careful — if the address in your sitemap conflicts with the canonical tag, research from 2026 shows Google will most likely make its own choice.

Mistake 7: If Your Site's Map Is Confusing, Google Gets Lost Too

Google needs to reach a page before it can crawl it. Pages that are 4 or 5 clicks away from the homepage are rarely visited by Google's bots — and therefore rarely ranked. Add to that 'orphan pages' with no internal links pointing to them, long chains of redirects stacked one after another, and sitemaps that haven't been updated in months, and you have Google struggling to crawl your site efficiently. In 2026, Google applies a cost-benefit analysis to every URL: pages that look low-value get pushed to the bottom of the crawl queue or skipped entirely. For SME sites, the simple rule is: your most important pages should be reachable from the homepage in no more than three clicks.

• Search Console > Pages report: How many pages are indexed, how many are excluded, and why?
• Search Console > Core Web Vitals: How many pages fall into the 'Poor' category?
• Search Console > Mobile Usability: Are there pages with reported issues?
• PageSpeed Insights: Test your homepage — if the mobile score is below 50, you have a serious problem.
• URL Inspection tool: Enter your most important page (homepage, service page) and confirm that Google can actually see it.

Technical SEO errors usually don't show up overnight — they accumulate over months, and by the time you notice, the ranking loss is already significant. Run through the checks above today. Prioritise what you find and start with the most critical issues. When you need help, working with an agency lets you both identify problems quickly and fix them for good.