Find the full document at http://www.html5rocks.com/en/tutorials/file/dndfiles/

In each example you can also drag files to the 'choose' button and drop them.

File Info

Select files and see the 'name', 'filetype', 'filesize' and 'last modified'

Select Image files

Select some image file and they will be displayed as thumbnails

Select a text file and slice it up

Select a text file and then choose the slice you want to view

Read bytes: