Washington State University

Angel Help Resources

Compressing or Reducing a File Size – Macintosh OS X users

Due to file size limits, you will want to make sure all documents you upload are as compressed as possible. Files greater than 10MB cannot be uploaded.  In the team file sharing area the limit is 50MB for the team.

Check the file size as follows:

  • Option 1
    • Control+click the file and select Get Info.
    • Once this window opens, go to size under the General section.
  • Option 2
    • Go to the Apple toolbar and select File.
    • Go to Get Info.
    • Once this window opens, go to Size under the General section.

Microsoft Word Documents (2008)

If your file is greater than 10MB and contains images, you can make your images smaller in Word.

Making an Image Smaller

  1. Go to the Format menu and select Picture at the bottom of the menu.
    :Picture 5.png
  2. Select the Size tab.
  3. In the Size and rotate field, adjust the Height or Width options. Generally, you only need to adjust one setting and the other will auto adjust.           
    Compression - size.png
  4. Select OK to finish sizing the image.

PowerPoint Presentations

PowerPoint version 2007

  1. In PowerPoint, select the image you want to compress.
  2. Select Picture Tools located above the menu bar
    Compression - PPT menu.png
  3. Select Compress Pictures on the Picture Tools menu.
    Compression - Comp Pict box.png
  4. In the Compress Pictures dialog box, select the Options button.
  5. In the Options dialog box, make sure the following are checked:
    1. · Automatically perform basic compression on save
    2. · Delete cropped areas of pictures
      Compression - Settings.png
  6. Under Target output select the appropriate option.
  7. Select OK. You are finished compressing your presentation.

PowerPoint versions prior to 2007

  1. Open the PowerPoint presentation.
  2. Select File and then Save As.
  3. In the Save As dialog box, select the Tools dropdown menu.
  4. Select Compress Pictures.
  5. Select All Pictures in document.
  6. Select Web/Screen.
  7. Select Compress pictures and Delete cropped areas of pictures.
  8. Select OK. You are finished compressing your presentation.

Using and Uploading Images & Photos

Many images and photos start out with large file sizes, making it necessary to compress them before using in a document. Mac OS X provides iPhoto, which has the tools necessary to complete this task.

To resize an image in iPhoto:

  1. Open iPhoto from your Applications folder.
  2. Go to the File Menu and select Import to Library.
  3. Use the Import dialog box to choose your image and select Import.
  4. Go to the File Menu and select Export.
  5. In the Export dialog box, select the Scale images no larger than: option on the left and enter in the dimensions you want your image to be exported as.
    :Picture 3.png
  6. Select Export and use the Save As dialog box to select the file name and destination you wish to save to.
  7. Select OK. Your image has been resized.

Image Extension Types:  For those of you who are a little more technology savy we have included more information on file extension types for images.

  • BMP (Microsoft Windows Bitmap): Bitmap (BMP) is the standard Microsoft Windows raster file format that has no compression rate. Normally, it is not a very efficient format because it is not compressed, which makes it unsuitable for online use and increases the size of source PowerPoint files considerably.
  • GIF (Graphics Interchange Format): If the image has fewer than 256 colors, GIF can render the image exactly. When the image contains many colors, the software that creates the GIF approximates the colors with the limited palette of 256 colors available. GIF is a very popular format due to its ability to animate using multiple layers and its support for transparency.
  • JPEG (Joint Photographic Experts Group): JPG or JPEG works best for images with lots of subtle color variations, such as a photograph. It is not so suitable for graphics with areas of continuous color. It does not work so well  on non-realistic images, such as cartoons or line drawings. It can contain millions of colors, but it does not support transparency. If you have any kind of image that has smooth, shaded transitions, in most cases JPEG is a better choice than GIF.
  • PNG (Portable Network Graphics): PNG uses a lossless compression method (i.e., no degradation of image quality) like GIF. It has two formats, PNG-8, which supports up to 256 colors, and PNG-24, which supports millions of colors. PNG is of principal value if you have an image with large areas of exactly uniform color, but that contains more than 256 colors.
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