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To assess a domain under SEO aspects, the analysis of its links is a criterion that may have a great impact on the value of a link from this domain. A link analysis looks at each link of the page under two aspects: the number of external links relative to internal links, the other whether a link is provided with the nofollow attribute, or ready, broken down internally and externally, dofollow and nofollow. The seotoolsearch.com link analysis provides an analysis for each link on the domain ready, broken down to internal and external, dofollow and nofollow.
What is the difference between an internal and an external link? An internal link points to another document on the same domain, an external link to a document on another domain. For the SEO analysis it can still play a role, if a link from each side of the domain goes out (so called sitewide links - links in the sidebar or in the footer area would be an example) or whether it only in a part of the documents or even only In a single document.
The "linkjuice" of a page is distributed to all links that originate from it and have not been deprecated with the nofollow attribute. A page, which is too generous with external links, will be able to pass on little authority for each link. In addition, search engine spiders crawl not an unlimited number of links, but only about 150. Any link beyond this does not matter.
A domain, for which an analysis does not give any external link, is also not particularly high by Google. A certain number of outgoing links are considered natural, and one or other link to a page that is considered an authority on the subject - not just Wikipedia, but also scientific articles, old and prestigious pages on the topic or even official places - Is even a trust-forming signal.
If the link analysis shows very few outgoing links, this is just as bad a signal as an extreme number of links.
Strong internal linking helps visitors and search engines
To put many internal links on the other hand is a useful strategy, because they help the search engine spiders to find and index every document of the domain. For human users, a sensibly set internal link can be an important orientation aid or lead to other interesting articles on the domain.
Each meaningful internal link not only creates a cross-link, but also makes the structure and hierarchy of the page clear. This makes navigating easier, and the Google Spider can better classify the page.
Again, the more natural, the better. For the ultimate internal link, there is no "one size fits all" recommendation; Here a careful analysis of the requirements is helpful. A shop, for example, will benefit from presenting related articles, a blog could generate a strong internal link with one or the other link to previous or related articles in each post.
The search engine does not follow a link with the attribute. It is devalued under SEO aspects. This may be a sensible measure, for example, if you link a link to a Google Postmaster Guidelines with nofollow, or as a prevention against spam in blog comments. Whether the use of nofollow makes sense is, however, a question for a thought-out analysis.