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Change the Resolution of PowerPoint Slide

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http://support.microsoft.com/kb/827745

This step-by-step article describes how to change the resolution dots-per-inch (the dpi settings) of exported slides by adding a new registry value for Microsoft Office PowerPoint 2013, 2010, 2007 or 2003. Additionally, this article describes how to export a slide as a picture.

I Recommend 64 640×480

Note The following table shows the default settings for a slide that you export as a picture. Collapse this tableExpand this tablePixels Dots-per-inch (dpi)
960 × 720 96 dpi (horizontal and vertical)
1280 X 720 96 dpi (horizontal and vertical) – PowerPoint 2013 widescreen default

Add the registry settings

To export a slide as a picture that has a resolution that is greater than the default of 96 dpi, you must add a registry value. To do this, follow these steps:
1.Exit all Microsoft Windows-based programs.
2.Click Start, and then click Run.
3.In the Open box, type regedit, and then click OK.
4.Expand the registry to the subkey for the version of PowerPoint that you are using:

PowerPoint 2003HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\PowerPoint\Options
PowerPoint 2007
Note The registry subkey for PowerPoint 2007 will not work with Office 2007 Service Pack 1.
HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\PowerPoint\Options
PowerPoint 2010
HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\PowerPoint\Options
PowerPoint 2013
HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\PowerPoint\Options
5.Click to select the Options subkey, point to New on the Edit menu, and then click DWORD Value.
6.Type ExportBitmapResolution, and then press Enter.
7.Make sure that ExportBitmapResolution is selected, and then click Modify on the Edit menu.
8.In the Value data box, type the resolution value that you want, based on the following table.

Note The maximum resolution setting that PowerPoint 2003 exports is 307 dpi.Collapse this tableExpand this tableDecimal value Fullscreen Pixels (horizontal × vertical) Dots-per-inch (horizontal and vertical)
50 500 × 375 50 dpi
96 (default) 960 × 720 96 dpi
100 1000 × 750 100 dpi
150 1500 × 1125 150 dpi
200 2000 × 1500 200 dpi
250 2500 × 1875 250 dpi
300 3000 × 2250 300 dpi
Collapse this tableExpand this tableDecimal value Widescreen Pixels (horizontal × vertical) Dots-per-inch (horizontal and vertical)
50 667 × 375 50 dpi
96 (default) 1280 × 720 96 dpi
100 1333 × 750 100 dpi
150 2000 × 1125 150 dpi
200 2667 × 1500 200 dpi
250 3333 × 1875 250 dpi
300 4000 × 2250 300 dpi

9.Click Decimal, and then click OK.
10.On the File menu, click Exit to exit Registry Editor.

Export a PowerPoint slide as a picture
To export a PowerPoint slide as a picture, follow these steps:
1.Start PowerPoint, and then open your slide presentation.
2.Open the slide that you want to export.
3.On the File menu, click Save As.
4.In the Save as type box, select the format to use to export your picture, and then click Save.

For example, in the Save as type box, select one of the following:
GIF Graphics Interchange Format (.gif)
JPEG File Interchange Format (*.jpg)
PNG Portable Network Graphics Format (*.png)
TIFF Tag Image File Format (*.tif)
Device Independent Bitmap (*.bmp)
Windows Metafile (*.wmf)
Enhanced Windows Metafile (*.emf)
Note You may also want to change the location where you save your picture by changing the location in the Save in box. You may want to change the name of your picture by changing the name in the File name box.
Limitations
When you set the ExportBitmapResolution registry value in the registry to change the export resolution of a picture in Microsoft Office PowerPoint 2003, there is a limitation that you must consider. The maximum resolution setting that Office PowerPoint 2003 exports is 3072 pixels measured from the longest edge of the slide. For example, the standard 10″ × 7.5″ slide would have a maximum effective DPI value of 307. (10 × 307) = 3070. The measurement of 3070 pixels falls within the 3072 limit. Any DPI settings that are higher than 307 for the standard slide would revert to the limit of 3072.Collapse this tableExpand this tableDecimal value Pixels (horizontal × vertical) Dots-per-inch (horizontal and vertical)
307 3072 × 2304 307 dpi
Note The limitation of 3072 pixels also applies to saving the slide programmatically. Code that exports the slide at a given pixel measurement will also be limited to 3072 pixels.

For example, the following code results in a graphic that is programmatically exported at 3072 × 2304 pixels:
ActiveWindow.Selection.SlideRange(1).export “c:\<filename>.jpg”,”JPG”,4000,3000