Topic relevance - an SEO link from a site about an korean phone number whatsapp article about choosing a power tool would be suitable for a blog of a hardware store that is engaged in promotion, but would be useless for a culinary blog. Site Traffic - If a site gets a lot of traffic (e.g. 500,000 users per month), a link from it will provide more traffic and SEO value than a link from a low-traffic site.
History and reputation of the site - a site that has previously been penalized by search engines can damage the reputation of your site. For example, sites that have used "black" promotion methods can reduce the trust of your page. Domain age - Older domains tend to rank better. For example, a domain that has been around for 10 years has more weight than a new one that was created a few months ago.
Ratio of external to internal links - a site with many external links (for example, links only to other sites) and no internal links to its own pages looks suspicious to search engines. Nesting level - pages closer to the home page (e.g. second-level page: example.com/blog/article ) are usually more important for SEO than deeply nested pages ( example.
com/blog/category/2021/09/article ). Displaying a link in the visible part of the page - links placed in the header or in the text of the article are more effective for SEO than those located in the footer or hidden in the page code. Spam level - if a page contains too many links (for example, more than 100 outgoing links), search engines may consider it spam, which will negatively affect the SEO effect.