Improve the Snapchat web experience by disabling screenshot prevention features which don't prevent screenshots but do actively harm the usability. And enabling video downloads
Thanks for reporting this bug! I admit I haven't tested in Firefox at all.
I think this is happening because of Firefox's Content-Security-Policy forbiddening external scripts. Chrome+Tampermonkey (at least with manifest v2) makes it easier for extension injected JS to bypass the CSP but I guess not so with Firefox. If I have time I'll look into this!
(though also you should confirm that vanilla Snapchat web works for you in Firefox even with this script disabled. Pretty mean of them to block Firefox even if it works)
I'm running this on Firefox along with a User-Agent switcher extension so Snapchat thinks it's on Chrome. The script isn't loading and I'm getting errors in the javascript console:
Looking into this, the recommendation is to use GM_addElement but I'm not sure how that should be applied.