i wanted to reduce size of cdr file , can some one plz help. i wanted to know whether we can change resolution ,colour ... its it possible to compress images with and without use of any software
It's hard to say how to reduce file if we don't know what you have inside.
Basically, use as much curves (lines) as possible and less raster images, use smaller amount of fonts as possible (more fonts - bigger file), rgb images are smaller than cmyk (a lot smaller)...
so, it is up to you to see where you have space to reduce file size...
-You can go to Tools > Color Styles. In the color styles docker make sure you don't have a lot of unneeded styles. Delete them.
-Also when saving there is an option to imbed color rofiles. Try unchecking it and saving to see if it makes a difference.
-If there is a bitmap in the document, select it, and go to Bitmaps > Resample. Bring the resolution down a little.
-Compressing one file with winrar or winzip will not change cdr file size, by much, but compressing multiple cdr files will decrease size and copying time.
You can delete all view and color styles, and unused symbols if it have. You also can reduce curves with a lot of nodes, and change resolution of all bitmap to 300dpi if it for print, and 72/96 if it for web.
When saving you can also elect to not embed the color profiles....it's a checkbox at the bottom of the Save and Save As dialog...it saves ~550Kb on an X5 file.
the big question is why do you need to reduce the file size. If it's for send the file using e-mail, you can upload to a free storage service, such as gigasize.com or yousendit.com
If the problem is to manage a too big file, as Sancho and other said before, if you have bitmpas with too much high resolulion, you can resample it to 300 dpi CMYK (if it's for printing purpose) or RGB 150 dpi (for general purpose, such as PDF for web).
Deleting all Color Styles (under the Tools menu) or saved views (Ctrl+F2) must reduce the size and increase the speed