To start a new chrome window without any userl profile loaded run cmd and type:
start chrome
You can also simply call the run interface and type “chrome” then enter to have the same effect.
Now, more interesting, if you want to open a new chrome windows with an alternative profile, or simply a different user:
C:\Users\user1>runas /user:alternative_profile_name "C:\Program Files (x86)\Google\Chrome\Application\Chrome.exe"
replace “alternative_profile_name” with the user name you want to use. It is usefull if you engage in multilanguage SEO activity to have profile set with different languages as default. Or if you work in a different language that the one you use for your everyday account, you can have a “professional” profile setting with all the appropriate default.
You might also need to open Incognito window to check website without your browser cache. Emptying your cache everytime can be cumbersome, so you can simply open an incognito window:
start chrome /incognito
For that matter I rather use a Firefox developer installation set to not cache anything.