But you don't need a Dropbox account to view any file for which you created a shareable link.
If you add raw=1 to the URL then it will directly show in the browser without the Dropbox viewer.
Or did you share a folder?
It's maddening that they force you to tweak with the URLs just so you can feed people a link that works for them though
You don't need account, that's for sure, but multiple times I've seen a big upsell popup that suggests that account is required, while the tiny gray button "skip to files" is on the very bottom. I hate such patterns.