I use the cliget extension in Firefox. It's awesome. It takes all of the parameters of the download request and packages them up in a wget
or curl
command line invocation that you can just copy and paste. I bet there's something similar for other browsers. ("Other browsers": Who am I kidding? Chrome.)
Easy way (with firefox).
Install the CLIGet extension. Click the download link. Copy & paste the resulting CLIGet line in to a terminal. Press enter.
https://github.com/zaidka/cliget
I use it with aria2c but it's fine with wget as well.