The answer is no. Winzip cannot do this.
What Winzip does is compress a file. But if you start with a highly
compressed file like a jpg file, there is very little for Winzip to do. Try
it yourself. Take one of your jpg file and Winzip it. Nothing here. You
will take a 1.2 MB file and after Winzipping it the size of the file will
be 1.1MB. Winzip simply cannot reduce the file size of an already highly
compressed file like a jpg file from a camera. Now try Winzip on a file like
Microsoft Word. You will see that Winzip will reduce this file ( a .doc
file) by at least 10 to 1. This is a great reduction and worth using.
With pictures (.jpg files) Winzip is not the way to go because Winzip will
not reduce the file size of an all ready highly compressed .jpg file.. The
only way is to remove "pixels" from your files before sending them.
You can do it when using IE6 and Outlook or Outlook Express. When you are
under a folder and you click on a picture, you look at the left under
"Picture tasks" and click on Send e-mail. A box will open to resize the
picture for e-mail. This is quite different from zipping a file, this
removes pixels from your original file. By removing pixels, the size of the
file will be reduced, but so will the quality of the picture. Fine to look
on the screen but not great to print.
The other way you can do it is to resize the picture first and then Insert
it in your e-mail. You can do this as given below:
Image Resizing
A. To decrease the size of the file for e-mail, web publishing etc.
Go to this site and download the free Image Resizer. Exe file in one of your
folder.
http://www.microsoft.com/windowsxp/pro/downloads/powertoys.asp
Once in your folder, double click on it to install it.
Once installed, you right click on a photo file (or on a group of selected
photo files).
Click on Resize image on the opening menu.
A window will open, select the size you want.
New files will be added in your folder, same name as original file but with
the word (small) added.
The first time you use it, you may not see Resize image on the opening menu
after you right click on the file or if you see it, it may not work. If so,
do the following:
Click on Run, click on Start and type the following in the textbox:
REGSVR32 SHIMGVW.DLL
and press the Enter key.
Note that there is a space between ...32 and SHI.
Also, you can download a free batch converter from here to resize pictures
and edit photos:
http://irfanview.com/
Sorry for this extremely long post, I tried to answer your question with
explanations. Hope this helps.