Content structure
Clarity and ease of perception are the main requirements for the structure of content. The text should not be presented as one continuous canvas. The content should include lists and footnotes, divide the text into paragraphs and sections, which will have subheadings and headings.
If you don’t do this, there is a high probability that the resource will be subject to search engine sanctions (keep in mind that this may not be your only mistake).
Often, beginning webmasters independently at&t email list compose texts for their resources, but they can contain many errors. In addition, a copywriter can also prepare not very high-quality material.
Naturally, such errors will negatively affect the resource's behavior. It is better to entrust the work of correcting text errors to proofreaders who will analyze the site's content for spelling and syntax errors.
Meta tag overspam
One of the most common mistakes is the abuse of meta tags (title, keywords and description), so this should be treated with special attention. For example, it is not uncommon to find texts in which meta tags consisting of keys are simply included in the text as a list, written with commas. This is wrong.
The essence of the title and description meta tags is the semantic disclosure of the page in the form of generalized information about it. Meta tags must be readable. In our opinion, the most convenient program capable of qualitatively checking meta tags is Screaming Frog.
Duplicate meta tags
This problem is inherent in such rather popular CMS as Joomla, WordPress, Opencart, etc. As a rule, duplication can be encountered on pages with GET parameters (sorting, filters, etc.) and pagination.
Such shortcomings are corrected using canonical URLs and robots.txt. If the site content analysis reveals specific pages with duplicates, then simply replace them with unique ones, and the error will be corrected.
H1 Headings
This gross error, related to the technical category, is unfortunately quite relevant. It consists of placing several H1 headings on a page, which is fraught with sanctions from search engines. So, do not forget: one page - one H1 heading.