Installing the MozBar will give you almost instant information to key metrics, such as page and domain authority, link counts, linking route domains, social shares and keyword difficulty scoring. You can also dig deeper by looking at the on-page elements right from MozBar.
Search result information works with Google, Bing and Yahoo! and provides you with high-level information right there on the SERP, allowing for quick analysis of key data. From here, you can get an idea of the pages’ back-link profile and its ranking ability.
Other features allow for the creation of custom searches by search engine, country, region and city, the ability to expose further page elements, find out information about the page authorship, schema.org and other markup, and get social metrics for Facebook, Twitter and Google+.
If you’re performing a site analysis – whether it’s yours or a competitors’ – I highly recommend you install MozBar and potentially save yourself a lot of time with your initial research and data gathering.”