A zip file is usually in the smallest format possible for a condensed file. If you need for your file to be smaller it might be necessary to try making a zip file from a different vendor who may do something Behind the Scenes to make the file smaller.
Zip the file with a program like WinZip.com
zip
a ZIP file- it contains one or more files that have been compressed to reduce file size- you have to extract the zip file to be able to see what files are in it
Change the Doc format to . any other format like rich txt format or .TXT format
It all depends on the type of digital file you are using. Most printers will do the reduction or enlargement in house. If the printer requires the file to be the exact size of the finished piece reducing the actual physical size of the file is quite simple, with the proper software. Another advantage is that no image quality will be lost when the file is reduced in size, whether it is a jpg, eps or tiff. From within Photoshop choose Image Size from the menu and reduce the size there. You can also scale the image in Photoshop or Illustrator. To reduce the file size you will need to 'stuff' or 'zip' the file with compression software.
File compression
http://www.xfutureblog.com/2007/09/27/how-to-reduce-or-compress-avi-file-size-and-upload-to-youtube/
Compression (such as compressing it into a .zip or .rar file), but the file will have to be uncompressed again before it can be used.
The size of a ZIP archive, as well as the size of any single file within a ZIP archive, is limited to 2 GB.
You don't need to buy a converter to convert a zip to an mp3 file. Groups of MP3 files often come in a ZIP file for easier download. The ZIP file contains files that have been compressed to reduce the size of the files. It is a folder that downloads to your computer, which you can then unzip and use the files inside. MP3 files are audio files that often take up a lot of space. Downloading a ZIP file filled with MP3s is a fast way of receiving all the data on your computer.
File Compression
It is called Compress.