Copy Urls Expert is an extension for Firefox. To know more, see extension's page on addons.mozilla.org.
See Build ReadMe for how to build xpi file.
All icons in src/chrome/skin/icons were thankfully contributed by Pranay Yadav. This includes the main icon of the extension that shows up on AMO page and addon managers. His work is licensed under Creative Commons Attribution-NonCommercial 4.0 license