Firefox

Here's an amazon link both without and with that feature being used, for comparison. (The tracking one was created in incognito mode, because I don't know what sort of things it might reveal about me otherwise)

https://www.amazon.com/Bentgo%C2%AE-Pop-Bento-Style-Compartments-Sustainable/dp/B0B3CLN8PX/?_encoding=UTF8&pd_rd_w=2B470&content-id=amzn1.sym.87cc8b65-1eb6-4676-be85-d0235c8cc1b4&pf_rd_p=87cc8b65-1eb6-4676-be85-d0235c8cc1b4&pf_rd_r=Z6KPA93RVDCTHA2HFQM7&pd_rd_wg=o2LTo&pd_rd_r=fef55702-5392-47a4-a5d2-8a7951d1229b&ref_=pd_gw_dealz_cm&th=1

https://www.amazon.com/Bentgo%C2%AE-Pop-Bento-Style-Compartments-Sustainable/dp/B0B3CLN8PX/?_encoding=UTF8&ref_=pd_gw_dealz_cm&th=1

What do the parts it left on do? The encoding is innocuous enough but I don't know what it's doing with ref or th. I usually sanitize links myself and I'd have brought that one down to either

https://www.amazon.com/Bentgo%C2%AE-Pop-Bento-Style-Compartments-Sustainable/dp/B0B3CLN8PX

or

https://www.amazon.com/dp/B0B3CLN8PX

, depending on how much I cared at the time. I kind of expected firefox to bring it down to the first version.