Update July 1, 2011: Dear users of PowerPoint 2010 and all users of PowerPoint on Mac OSX, due to popular demand, I have created a new. Oct 07, 2017 Choose File Export. In the dialog that appears, choose TIFF as the export type. You'll be able to choose the number of pixels (dots) to export. That'll probably top out at 3000 pixels, which, if your presentation is 10' wide or high, will give you 300dpi. That's 300 dots per inch of PowerPoint slide.
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You can change the export resolution in Microsoft PowerPoint by saving a slide in a picture format. There are two steps to this process: using the system registry to change the default resolution setting for exported slides, and then actually saving the slide as a picture at the new resolution.
Step 1: Change the export resolution setting
Important
Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.
By default, the export resolution of a PowerPoint slide that you want to save as a picture is 96 dots per inch (dpi). To change the export resolution, follow these steps:
Step 2: Export the slide as a picture
Note
You may want to change the picture's save location in the Save in box. You may also want to change the name of the picture in the File name box.
Limitations
When you set the ExportBitmapResolution registry value in PowerPoint, there's a maximum DPI limitation to consider for some versions of PowerPoint.
Maximum DPI is dependent upon the slide size. The formula is:maxdpi = (sqrt(100,000,000 / (slide with * slide height)), where slide width/height are in inches.
For example, for a standard 13.3” x 7.5” slide, the equation would be:sqrt(100,000,000 / (13.333 * 7.5) ) = 1000.
PowerPoint 2019, 2016, 2013, and 365
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There is no fixed DPI limit. Slide export is only limited by how big the resulting bitmap gets. PowerPoint can support creating bitmaps up to ~100,000,000 pixels (width x height). For standard widescreen slides (13.3” x 7.5”) this means a maximum DPI of 1000. For the old style 10” x 7.5” slides this means a maximum of 1155 DPI, but depending on slide size, this can be more or less.
PowerPoint 2010 and older
The maximum resolution that PowerPoint can export is 3072 pixels, based on the longest edge of the slide. For example, the standard 10' × 7.5' slide has a maximum effective DPI value of 307. The 3070-pixel result (10 × 307 = 3070) falls within the 3072 limit. However, any DPI setting that's greater than 307 for a standard slide reverts to the limit of 3072.
The 3072-pixel limit also applies to saving the slide programmatically.
For example, the following code programmatically saves a picture with dimensions of 3072 × 2304 pixels:
More information
For information about changing the size of your slides, see Change the size of your slides.
Microsoft PowerPoint 2010 enables you to create complex presentations containing both text and images. It also enables you to convert your slides to JPEG images. However, by default, PowerPoint 2010 generates JPEG files with a resolution of just 960 pixels by 720 pixels, which is too small for high quality prints. To work around this issue, you must use a little trick that, unfortunately, involves editing the Windows Registry.
Don't worry, you just have to add a new value in the Registry to tell PowerPoint what resolution to use when converting slides to JPEG images.
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