You can tell windows to compress files to save space.

Open Windows explorer
Locate your file
rightclick on it and choose properties|general tab
click the advanced button

and you'll see how to toggle it on/off.

There may be an option to do this to at a drive level--I don't recall.

And Gord Dibben added...

If the colors annoy you......

Open My Computer or any Folder

ToolsFolder OptionsView

Scroll down to Files and Folders and uncheck

"show encrypted or compressed NTFS files in color"

CRW wrote:

Here's probably a very simple question for a lot of you, but has left me
curious because someone in my office asked me this question (some of his
excel filename's appeared blue), and I didn't have a clue.

Please somebody explain to me why a filename (any MS Office filetype) is
sometimes displayed in a blue format instead of the usual black?

How useful is this characteristic other than making the file stand out
easily in a long list of similar files that have the black filename format?

Answers appreciated, thanks!

--

Dave Peterson