Since most people aren’t familiar with content delivery networks, you’ll probably avoid this sort of confusion by adding a note either at the top or the bottom indicating the images are NOT stored on the installer’s website/server.
The lack of a note implies they’re uploaded to the server, since your first and third feature currently indicate the files are uploaded, with no explanation of where (other than a reference to a CDN later in the description):
Features
Upload images of any resolution and size
Crop images
Upload documents and archives
Choose images from Facebook, Instagram, Flickr or VK
Choose files from Dropbox, Google Drive, Box, Evernote
Deliver your media through CDN, it’s up to 5x times faster
