Drag files or folders in from another app (e.g. Files in Split View). Any file listed in green reached the page; the upload line shows how many bytes the server received.
1. Dropzone (JS drop event, files + folders)
Drop files or folders here
2. File input (drop onto it directly)
3. Folder input (webkitdirectory)
4. Text area (text and link drops should still work)