Thank you so much for your reply (WITH CODE!!)!! :) :)

"Amazon + [ext] / ItemID?"

Actually, yes, the .ext[domain extension] would be nice, and there needs to be either /dp or /gp and there may be /product after that, then the /ItemID[ASIN].

For example:

https://www.amazon.com/20000mAh-Portable-Waterproof-External-Flashlight/dp/B07TY13NW1/?<any gibberish>

I want the resulting string to be:

https://www.amazon.com/dp/B07TY13NW1