Clean copy URL — cleancopyurl

This extension lets you choose which URL to copy to the clipboard based on the page you are viewing. It helps you remove all the tracking data sites like Amazon typically append to your product search. It also lets you open a selected cleaned up link in either the current window or in a new one.

A typical example is when you end up with:

https://www.amazon.com/Mathematica-Cookbook-Building-Science-Engineering/dp/0596520999/ref=mp_s_a_1_17?ie=UTF8&qid=1540661026&sr=8-17&pi=AC_SX236_SY340_QL65&keywords=mathematica&dpPl=1&dpID=51VOw%2BIWKRL&ref=plSrch

When all you want is:

https://www.amazon.com/Mathematica-Cookbook-Building-Science-Engineering/dp/0596520999