MD5 Online is a free online utility to calculate and verify the MD5 checksum of any file on your hard disk, it will generate the hash string on the client side without uploading your file to the server, so the calculating speed is very rapid. MD5 for file supports large files up to 4GB, and could create the MD5 string for any text. To use MD5 of file , a modern Internet browser that supports HTML5 is required, such as FireFox 3.6+, Chrome 6.0+, Safari 6.0+, Opera 11.1+ and IE 10.0+. Because this app is online, it’s platform independent, which means that it supports all mainstream operating systems including Windows, Mac OS X and Linux. :-= website