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JC Lupis | Marketing Charts | Mon, 01 Aug 2016 13:30:05 +0000

Many websites are facing serious or severe on-site SEO issues, SEMrush reveals in an audit of 100,000 websites and 450 million pages. In fact, 6 of the 10 most commonly-found problems are considered to be of the most severe variety, ranging from duplicate content and title tags to broken external links.SEMrush-Common-On-Site-SEO-Issues-Aug2016

The most common problem is duplicate content, found on half of the websites sampled. While this doesn’t carry a penalty, SEMrush notes that it does affect choice of pages to rank for as well as the overall consumer experience.

The next-most common problem is the presence of images with missing ALT tags, with 45% of sampled websites having this problem. While not a severe problem, these can affect image search and are an important consideration now that visuals are taking a greater role in content marketing.

While not as prevalent an issue, the audit also found a more serious problem with images: 1 in 10 had broken internal images. Together with the more than one-third (35%) of sites with broken internal links and the quarter with broken external links, the results show that this is a fairly common issue that can affect page rankings and user experience.

On the topic of links, a recent study from Stone Temple Consulting suggests that they’re more important to SEO than might be thought. Indeed, while content quality is obviously critical, links are also a crucial ranking factor.

Returning to the SEMrush study, other severe issues found on websites include:

  • Duplicate meta descriptions (on 30% of sites);
  • Missing H1 (on 20%); and
  • Missing title tags (8%).

The full list of problems found can be seen in the chart above, with more details laid out in the SEMrush post accessible here.