What are common SEO mistakes to avoid?

What are common SEO mistakes to avoid?

: Semrush Team 1 min read Sep 24, 2025

Common SEO mistakes to avoid include duplicate content, slow page speeds, poor mobile optimization, and weak keyword research that prevent your website from ranking well in search results.

These mistakes affect most websites and can significantly hurt your search visibility, but they're fixable once you know what to look for.

Additional SEO mistakes to avoid:

• Duplicate content across multiple pages. Having identical or very similar content on different URLs confuses search engines about which page to rank
• Slow page loading speeds . Sites that take more than 3 seconds to load lose visitors and rank lower in search results
• Poor mobile optimization . Non-mobile-friendly designs hurt rankings since most searches happen on mobile devices
• Keyword stuffing in content. Cramming keywords unnaturally into content makes it hard to read and can trigger penalties
• Missing or weak title tags and meta descriptions . These elements help search engines understand your pages and influence click-through rates
• Broken internal and external links . Dead links create poor user experience and prevent search engines from crawling your site properly
• Thin content that doesn't match search intent . Pages with little valuable information or content that doesn't answer what users are searching for
• Ignoring local SEO . Businesses with physical locations miss opportunities by not optimizing for local searches

Semrush's Site Audit can help identify and prioritize these technical issues, while Position Tracking monitors your progress as you fix them.

Start by fixing the most impactful issues first, like page speed and mobile optimization, then work through content and technical problems systematically.

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Source: Semrush.com