Chrome: Normally Gmail uses a paperclip icon to let you know a file is attached to the email. The free Chrome extension Attachment Icons for Gmail replaces the paperclip with standard Windows file ...

By installing Attachment Icons for Gmail, you'll be able to quickly identify if it's a PDF, MP3, ZIP, or any other common file type attached to your e-mail without even having to open it.

Windows only: Tiny, portable utility Default Programs Editor makes short work of changing file associations, autoplay settings, and can even change the icon associated with a file type. Once you ...