Area quality is the combined estimation of a whole space. Rather than taking a gander at the estimation of individual pages, we take a gander at the area in general to see how solid it is.
It is generally shown as either Domain Authority or as the landing’s Page Authority.
PageRank is determined by Google and dependent on the number and nature of connections indicating a page. It runs on a scale from 0-10, with 10 being the most noteworthy. We can utilize the PageRank of a site’s landing page to get a thought of how solid it is. Albeit in fact this is just the PageRank of a solitary page, it is as yet a decent pointer of the quality of an area, in light of the fact that most of a site’s connections will be to the landing page and PageRank streams from that point to interior pages.
It ought to be noticed that there is a distinction between “Toolbar PageRank” and the real PageRank utilized by Google. Toolbar PageRank is obvious to you by introducing the Google Toolbar on your program or by utilizing a program module/expansion that pulls information from a similar source. It is refreshed each 3-4 months by Google, which is not the same as the real PageRank that is increasingly liquid, always refreshed by Google to be nourished into their positioning calculation.
Therefore, the PageRank you find in the Google Toolbar could be a while old. This is the reason new site pages for the most part have a PageRank score of 0: They have to trust that Google will refresh the toolbar.
Area Authority is determined by Moz and runs on a size of 0-100, with 100 being the most noteworthy. It utilizes various sign taken from the Moz crawler and attempts to anticipate how well a space will perform in query items. It is valuable close by PageRank as another pointer of how solid an area is.
As far as external link establishment, webpage quality is a decent measurement to utilize on the grounds that you need to get joins from sites that are exceptionally solid. In the event that the connections you get are from solid areas, they will pass more solidarity to your very own site, which is a reasonable sign to Google that you have a decent site that has the right to rank well.
For instance, CNN has a PageRank of 8 and a Domain Authority of 99. Heaps of different sites connect to CNN on the grounds that it is a definitive site with top notch content. Along these lines, CNN isn’t probably going to connection to low-quality sites, so on the off chance that you get a connection from CNN, it is a sign that you have a decent site, as well.

Tools to measure domain strength
• PageRank expansion for Chrome
• MozBar for estimating Page Authority
• Google Toolbar for PageRank (for Internet Explorer)