The app handles browser independant *.url shortcut files (as on your PC) and opens the the default browser, or a different app when you defined a rule for the URL.
Please dont forget to give storage permission to the app if you want to use this feature, otherwise the *.url files can't be read.
It can also handle URL's send via "share" or "open with" by other applications.
You can use rules to specifiy which URL is to be opened by which browser, here some examples:
Open all (https and http) URL's from www.google.com with firefox:
firefox=*www.google.com*
Open waze navigation to your favorite location
com.waze=^waze://.*$
(remember, waze-url's look like this: waze://?favorite=work)
Open all https-URL's from all sites in chrome:
chrome=https*
Open all URL's from wikipedia (all countries) in UC-browser:
com.UCMobile.intl=*.wikipedia.org.*
For even more control you can use expert rules (regular expressions).
Those rules have to start with an ^-sign:
expert rules equivalents to the above mentioned rules:
firefox=^https?://www.google.com.*$
chrome=^https://.*$
com.UCMobile.intl=^https?://.*.wikipedia.org.*$
Without any rule the default browser will be used.
As you can see, you can always use the complete package names for the browser on the left side of the rule, for some of the more common browsers you can use simple aliases:
firefox
chrome
operamini
youtube
You can find the package name of your favorite browser by navigating to it in the playstore, then have a look at the URL in the adress bar of your browser, it shows like https://play.google.com/store/apps/details?id=packagename