Domain Strength

What is Domain Strength ?

Domain strength is the cumulative value ofan entire domain. Instead of looking at thevalue of individual pages, we look at thedomain as a whole to understand howstrong it is.

Page Rank

PageRank is calculated by Google and based on the number and quality of links pointing to a web page.

It runs on a scale from 0-10, with 10 being the highest.

We can use the PageRank of a website's homepage to get an idea of how strong it is.

Although technically this is only the PageRank of a single page, it is still a good indicator of the strength of a domain, because the majority of a website's links will be to the homepage and PageRank flows from there to internal pages.

Toolbar PageRank

It should be noted that there is a difference between "Toolbar PageRank" and the actual "PageRank“ used by Google.

Toolbar PageRank is visible to you by installing the Google Toolbar on your browser or by using a browser plugin/extension that pulls data from the same source.

It is updated every 3-4 months by Google, which is different from the actual PageRank that is more fluid, constantly updated by Google to be fed into their ranking algorithm.

For that reason, the PageRank you see in the Google Toolbar could be several months old. This is why new web pages mainly have a PageRank score of 0: They need to wait for Google to update the toolbar.

Domain Authority

Domain Authority is calculated by Moz and runs on a scale of 0-100, with 100 being the highest.

It uses a number of signals taken from the Moz crawler and tries to predict how well a domain will perform in search results.

It is useful alongside PageRank as another indicator of how strong a domain is.

Site Strength

In terms of link building, site strength is a good metric to use because you want to get links from websites that are very strong.

If the links you get are from strong domains, they will pass more strength to your own website.

Which is a clear signal to Google that you have a good site that deserves to rank well.

Example: CNN

For example, CNN has a PageRank of 8 and a Domain Authority of 99.

Lots of other websites link to CNN because it is an authoritative website with high-quality content.

Because of this, CNN is not very likely to link to low-quality websites, so if you get a link from CNN, it is a signal that you have a good website, too.

Tools to Measuring Domain Strength

PageRank extension for Chrome

MozBar for measuring Domain Authority

Google Toolbar for PageRank (for Internet Explorer)

Thank YouRajat