In the Main Library, click the + Upload Files button.
Note: You can only upload assets in either the Main Library, Smart Albums, or at the Album-level. You will NOT be able to upload at the Folder-level.
You’ll be prompted to choose files from your computer. Once chosen, the files will be uploaded into your library.
You can also drag files from your desktop to your browser window. Dropping files in your Canto library will upload them.