I like Dropbox but find it super inconvenient for just sharing 1 file. That's where I started using Crate.
Can you link which script you use? When I use or try to share with dropbox it only allows for folders.
If they are on the Public folder just Dropbox > "Copy Public Link"
Faster than using a website.
I've also seen scripts that take a screenshot of the current window, copy to dropbox, and put that URL in your clipboard.