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Top Technical SEO Mistakes & How to Avoid Them

Think of technical SEO as your website’s skeleton. Anything that grows on its bones will be affected by the way they are shaped.

Thus, SEMrush (disclosure: I work for SEMrush) conducted some research on the most frequent and harmful SEO issues that negatively affect a website’s performance.

These are the factors that determine your website’s user-friendliness and thus, its overall performance.It’s important to look at all the issues we discuss below to get a thorough insight into your website’s health.

Do make sure that you prioritize the errors made on the most important pages of your website, as, not every mistake needs to be fixed right away. Which is why we are not simply giving you insights on the most common SEO mistakes but are also listing them in regards to how much they affect your website’s performance.

Most Common Technical SEO Issues & Their Severity

At large, there are three layers each website owner should consider in order to evaluate their website’s health:

  • Crawlability & Site Structure
  • On-Page SEO
  • Technical SEO

Each area is like Pandora’s box – once opened, it releases various evils that you will have to deal with. But let’s take it one step at a time.

Area 1: Crawlability & Site Structure

Optimization efforts are only effective when search engines have access to your web pages. The Googlebot has to crawl and index your entire website before it appears in SERPs. So, any error at this point will simply bring all of your optimization efforts to nought.

The Main Crawlability & Site Structure Errors You Should Avoid

Links & Redirects

SEMrush found that every fourth website has link errors, while domain configuration and errors in redirect chains and loops are among the less common but harmful issues.

The biggest problems occur in the internal links – 30 percent of websites have broken internal links.

Also, pay extra attention to 4XX errors – they are present among 26.5 percent of websites.

SEO errors - links and redirects

While links and redirects make up the pathways to your user’s journey through your website, it’s still important to correctly configure your map. As such, let us look at what sitemap and robots.txt have to do with crawlability and site structure.

Sitemap & Robots.txt

Although most websites appear to do pretty well when it comes to sitemaps and robots.txt’s, some issues are still quite severe.

Check whether you have any format errors in your sitemap.xml files – which affect about 13 percent of websites, or any format errors in your robot.txt, which is a less common yet equally severe mistake.

 

SEO errors - sitemap

Area 2: On-Page SEO

Now it’s time to look at your individual web pages, as this is what on-page optimization is all about. This area is of the utmost importance to your valuable pages.

Basically, on-page SEO is all about optimizing content and the HTML code of particular pages to improve their rankings; and a well-optimized page will naturally have a better off-page performance.

Key On-Page SEO Errors to Watch out For

Content

Content is pretty much everything! And it is not only true about the actual quality of your content, but also about its technical aspects.

SEO errors - content

  • 65.88 percent of websites have severe duplicate content issues. Of course, in some cases, it’s impossible to avoid having duplicate content, but you can always add a rel=”canonical” tag to your secondary pages. However, try not to overuse your page-concealment powers, as unique content is always better than well-optimized duplicate content.
  • An impressive 93.72 percent of web pages have a low text-to-HTML ratio. While this issue is really widespread, its severity level is pretty low because some pages (e.g., a “Contact Us” page) will naturally contain less text. However,  this will still be perceived as an error.
  • 73.47 percent of pages have a low word count, which isn’t always a wrongdoing on your part, as some web pages simply do not require much text. While this may be a minor error, attempt to put at least 250 words on each page where it is appropriate and feels natural.

Meta Descriptions

As shown by the study, meta descriptions are often left out of the optimization process. 63 percent of website owners completely abandon any efforts to create a meta description, and almost 54 percent of websites have duplicates.

Duplicate meta descriptions are highly severe while missing ones aren’t that harmful because search engines will assign a meta description – even if you don’t take the time to do it yourself. But, it is often a bad idea to leave everything up to the search engine.

SEO errors - meta description

Title Tags, H1 Tags & Images

Another area of content optimization that affects your SEO has to do with titles, headings, and images.

More than 60 percent of websites are missing alt tags for their images, have title tags that are too long, and are lacking H1 tags.

While these issues aren’t considered to be as severe as many others, they do negatively affect your website’s UX, which, in turn, has a negative impact on your rankings.

Area 3: Technical SEO

You must now be wondering why we left out such significant areas of SEO like site speed and mobile responsiveness. The macro indicators of your website’s performance are in the technical SEO section.

The price of a mistake in any of the technical SEO components can be incredibly high. An Amazon study revealed that 100 milliseconds of extra load time can cause a 1 percent drop in sales.

Your Traffic & Revenue Largely Depend on the Following Technical SEO Areas

Page Speed

Page speed is one of the most significant Google ranking factors, influencing user experience and, therefore, affecting metrics like bounce rate. More than 20 percent of websites have a slow page load speed, an issue that deserves the highest level of severity.

seo errors - page speed

seo errors - old technology

Mobile-Friendliness

Although many websites have already embraced the Mobilegeddon, it has caused some confusion over the technical side of things.

The worst thing you can do is forget to add a canonical tag in Accelerated Mobile Pages. This is a high-severity issue, present across 0.08 percent of AMP adopters.

seo errors- mobile

Source
SEJ
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