Difference between Domain Authority and Page Authority
DOMAIN AUTHORITY:-
A domain authority predicts how good the website will rank on the SERPs or search engine result pages. The scores of domain authority are from 1 to 100 and the greater the ability to rank the greater the scores.
Multiple factors go into calculating Domain Authority which include linking root domains and number of total links. The score can be thus used to compare the ranking strength of a website over time.
A website domain authority can be seen through MozBar which is a chrome extension and by link explorer and the SERP section of the keyword explorer amongst many other tools.
Sites like Google and Wikipedia have a large number of high quality external links and thus are at the top end of the domain authority scale. On the other hand small businesses and newer websites have a significantly lower DA score and often start with a score of 1.
The significance of Domain Authority is that it lets you compare the DA scores and helps determine which sites have more important and powerful link profiles. As DA is a comparative score thus there is no bad or good DA score.
PAGE AUTHORITY:-
PA or Page Authority predicts how well and good a specific page will rank on a SERPs or search engine result pages. The PA scores wary from 1 to 100 with a higher score indicating a greater ranking ability.
Dozens of factors are taken into consideration including web indexes while determining PA. Similar to DA it used a machine learning model to identify the algorithm which best correlates with rankings across many thousands of SERPs which produce PA scores using specific calculations.
PA is a comparative metric and not an absolute one and thus there is no good or bad PA only a higher score indicates which pages have a more powerful link profile as compared to others.
By improving a pages link profile you can positively influence a pages Authority. You can thus do this by procuring external links from other high authority pages which act as votes of confidence for the PA of your page.
