There are many tools where we can check the backlinks of the site, but how can I check the qualities of them ?
You can check the qualities of them by observing their features. Some are providing great features and some are not. You may not have the proper experience unless you have the real taste of using those. Thank you!
This is quite easy. For starters, you check the DA of the domain. Then you check the page authority of the page that has a link towards your site. Then, you look at the text and see if it is related to your site. If the text is related and you have DA of over 40, with a Page Authority that is also higher, the link is quite good and valuable. Links are usually given a weight based on the domain that they come from. You can check domain authority by simply using the tools you find online when you search "what is my domain authority" in Google. Also, you can go to sites like ahrefs.com or majesticseo since they give you a profile of the backlinks in the sense that you are told how many are higher authority and how many are not. Anything else would need more details from you in order to give you a better idea how to figure out if the backlink is good or not.
Yes once goes with paid tools you can analyzing your low quality backlinks and high page backlinks, Keywords research and every things
1. Collect linking root domains 2. Check PageRank distribution 3. Check for deindexed root domains 4. Check social metrics distribution 5. Check periodically So far, several websites have seen ranking drops as a result of some of their linking root domains being removed from Google's index. Those with very low PageRank values and low social shares over a period of time should be manually/editorially reviewed in order to assess their quality. Such links are likely to be devalued sooner or later, therefore a new link building strategy should be devised. Working towards a more balanced PageRank distribution should be the main objective, links from low quality websites will keep naturally coming up to some extent.