On a Mac with Chrome you do not need any app. All you need to to create a PDF of any web page is to select "Print." Down at the bottom of the print dialog is "Open in Preview." After opening the web page in Preview, you simply select "Save" and you have a PDF of the web page.
But my question with this site is, where is there a single table? You can get a table for the distance and time from anywhere to some specific destination that you choose, but you have to click on the destination. For example, when I chose US Ports, all the desinations were listed. I then chose Anacortes, and the table showed distances from everywhere to Anacortes. Is there a single table with locations in both the rows and the columns so you can see the distance between any two locations in one table?