Imagens no Dropbox

When I put the URL your plugin copies to the local server?

I have an import table that is filled with Public Dropbox links, such as these:

https://www.dropbox.com/s/ainsdnrrcnptkk5/TV_P_Double_Layer_Med%20%283%29.png?dl=0

Dropbox has 4 variations of links, the basics with the preview page;

The second they raw:
https://www.dropbox.com/s/ainsdnrrcnptkk5/TV_P_Double_Layer_Med%20%283%29.png?raw=1

The Direct Download:
https://www.dropbox.com/s/ainsdnrrcnptkk5/TV_P_Double_Layer_Med%20%283%29.png?dl=1

Second Direct Download:
https://dl.dropboxusercontent.com/s/ainsdnrrcnptkk5/TV_P_Double_Layer_Med%20%283%29.png?dl=1

Can you test which of these is the most recommended?
Or even so they are inaccessible for import?

I want to copy them into my local media folder.