1702×630px 72dpi is the size you want to upload
as for the dpi I agree it is not much use in web but what people do is they create a file at 72dpi and then increase the dpi by image resizing which in turn increases the file pixel size.
1702×630px 72dpi is the size you want to upload
as for the dpi I agree it is not much use in web but what people do is they create a file at 72dpi and then increase the dpi by image resizing which in turn increases the file pixel size.