Nice one GVK, Sorry don't know your given name. It even works with older versions of Firefox. My Apple is 10 years old and will not run an up-to-date operating system so a lot of newer apps don't run.
I have used the plugin to download pictures to fix threads I save all the pictures in a post and number them then upload them directly add them to the thread next to the old pictures then once done I go back in and delete the old links