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   Get rid of bitmaps!

This is a quick way of changing screenshots (which are large bitmap files) into JPEGs or GIFs in your Word worksheets or PowerPoint presentations to cut down on file size. It only works on the page or slide, so you need a picture-editing program if you want to save the original in a different file format.  

Picture toolbar

  1. Insert the picture you have saved as a bitmap in the usual way: Insert > Picture > From File, then click on the picture to select it. Wrap and crop as usual. 

  2. Select the picture

  3. Click on Cut – it disappears, but don’t worry, it’s stored on the ClipBoard

  4. Go to Edit > Paste Special (not Paste)

  5. Choose Paste As > either Picture (Gif) or Picture (JPEG) > OK
 

Here are two examples: a drawing made in Paint and a small scanned poster. They have been saved as 24 or 16 bit bitmaps and as JPEGs or GIFs to compare file sizes. Quality for the 16-bit bitmap is poor with loss of colour information. The others have no obvious visual differences
Paint - watermelon water_melon_multiple.gif
water_melon_multiple16.bmp
water_melon_multiple24.bmp		 15KB
179KB
1,059KB		 GIF
BITMAP
BITMAP
Buttonless mouse poster buttonless_mouse16.bmp
buttonless_mouse24.bmp
buttonless_mouseJPEG.jpg 		56KB
328KB
19KB		 BITMAP
BITMAP
JPEG
© RKM 2002 - 2007

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