PPT97: How to Control the Dimensions of Bitmaps
ID: Q166330
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The information in this article applies to:
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Microsoft PowerPoint 97 For Windows
SUMMARY
When you save a PowerPoint slide in CompuServe Graphics Interchange Format
(.gif), JPEG File Interchange Format (.jpg), or Portable Network Graphics
(.png) format, PowerPoint calculates the size of the graphic in pixels by
multiplying the slide dimensions (in inches) by 96. If you need to
control the pixel dimensions of bitmap graphics created by PowerPoint, you
can change the size of your slides.
Occasionally, you may want to create a graphic that is a certain
number of pixels by a certain number of pixels in size, such as in the
following examples:
- You are using PowerPoint to create a picture to be used as the
wallpaper picture for your computer and you want the picture to fill
your screen exactly.
- You want to output your PowerPoint slides as 35 mm photographic
slides and you do not have a Windows printer driver for your film
recorder. Many film recorders include software that allows you to
convert Tagged Image File Format (.tif), Targa (.tga), or Macintosh
PICT (.pct) formatted bitmap graphics into 35 mm slides.
- You are using PowerPoint to create images that will be combined
with digital video footage in a video editing program such as Adobe
Premiere. Video editing programs can often combine .jpg, Device-
Independent Bitmaps (.dib), .tga, or .pct formatted images with video
footage.
NOTE: Although PowerPoint can only save files as .gif, .jpg, or .png
bitmap files, you can use Microsoft Photo Editor, which ships with
PowerPoint 97 and Office 97, to convert these to .tif or .tga files.
MORE INFORMATION
Bitmap graphics are computer graphics which are basically a
rectangular array of dots of different colors. Each dot is called a
'picture cell' or 'pixel.'
Although you can import bitmap graphics into PowerPoint, PowerPoint
slides themselves are not bitmaps; they are vector-based graphics. A
vector-based graphic is not made up of pixels; it is made up of
mathematical expressions to describe all the shapes it contains. You
can enlarge or reduce a vector-based graphic without losing any
details. When you export a slide as a .gif, .png, or .jpg file,
PowerPoint converts the vector-based graphics into bitmaps.
To change the size of your slides, follow these steps:
- On the File menu, click Page Setup.
- In the Width and Height boxes, type the measurements you want.
- Click OK.
The following table lists the dimensions for some commonly-used bitmap
formats.
Dimensions Used For Slide Slide
(in pixels) Height Width
(inches) (inches)
-----------------------------------------------------------------
640 x 480 VGA Windows Wallpaper 5.00 6.67
800 x 600 SVGA Windows Wallpaper 6.25 8.33
1024 x 768 SVGA Windows Wallpaper 8.00 10.67
736 x 486 NSTC Video (Television) 5.06 7.67
2048 x 1366 Film Recorder (2K lines) 14.23 21.33
4096 x 2732 Film Recorder (4K lines) 28.46 42.67
Additional query words:
97 ppt8 ppt8.0 bitmap JPEG CompuServe TIFF tagged image file format .dib raster mirus lasergraphics montage
Keywords : kbgraphic
Version : WINDOWS:97
Platform : WINDOWS
Issue type : kbhowto