By default, the export resolution of a PowerPoint slide that you want to save as a picture is only 96 dots per inch (dpi), which is much lower than the 300 dpi required by most journal papers. However, you can easily change the default resolution setting to 300 dpi, or even 1000 dpi, using the system registry.
The best solution is to change the setting of the PowerPoint in the windows registry to export images with higher resolution. It is not difficult and can be found here. 2 Office 365 PowerPoint Click on File Options Advanced Image Size and Quality Change default resolution to the one you want. I have given the DPI and resolution combination below. Once you save, it becomes the default resolution.
By default, the export resolution of a PowerPoint slide that you want to save as a picture is only 96 dots per inch (dpi), which is much lower than the 300 dpi required by most journal papers. However, you can easily change the default resolution setting to 300 dpi, or even 1000 dpi, using the system registry.
Step 1: Change the export resolution setting
Exit all Windows-based programs.
Right-click the Start button and then Run.
In the Open box, type
regedit, and then select OK.
You can also type regedit in Command Prompt (cmd) to open Registry Editor.
. Make sure resolution is at 2400dpi. Adjust the default page size to match your PowerPoint document size and therefore the finished size of your poster. Under the Image tab/folder (Fig. 9) make sure the image compressions are as this screen grab. Go to the Fonts tab/folder (Fig. 10) and ensure ‘Embed All Fonts’ box is ticked. The resolution we use for PowerPoint resolution and 4K monitors is called UHDTV 4K @ 3840 x 2160 pixels. The film industry will use 4096 x 2160 pixels, but this is not a 16×9 aspect ratio so it is not a part of this discussion and something you will most likely never use.
Locate one of the following registry subkeys, depending on the version of PowerPoint that you're using:
PowerPoint 2016, 2019, PowerPoint for Office 365
HKEY_CURRENT_USERSoftwareMicrosoftOffice16.0PowerPointOptionsPowerPoint 2013
HKEY_CURRENT_USERSoftwareMicrosoftOffice15.0PowerPointOptions
- Click the Options subkey, point to New on the Edit menu, and then click DWORD (32-bit) Value.
Type ExportBitmapResolution, and then press Enter.
Make sure that ExportBitmapResolution is selected, and then click Modify on the Edit menu.
In the Edit DWORD Value dialog box, select Decimal.
In the Value data box, type the value of the resolution that you want such as 300. Or, use the parameters in the following table.
| Decimal value | Full-screen pixels (horizontal × vertical) | Widescreen pixels (horizontal × vertical) | Dots per inch (horizontal and vertical) |
|---|---|---|---|
| 50 | 500 × 375 | 667 × 375 | 50 dpi |
| 96 (default) | 960 × 720 | 1280 × 720 | 96 dpi |
| 100 | 1000 × 750 | 1333 × 750 | 100 dpi |
| 150 | 1500 × 1125 | 2000 × 1125 | 150 dpi |
| 200 | 2000 × 1500 | 2667 × 1500 | 200 dpi |
| 250 | 2500 × 1875 | 3333 × 1875 | 250 dpi |
| 300 | 3000 × 2250 | 4000 × 2250 | 300 dpi |
See the Limitations section for more information when you set this value.
- Select OK.
- On the File menu, select Exit to exit Registry Editor.
Step 2: Export the slide as a picture
In PowerPoint, open your slide presentation, and then open the slide that you want to export.
On the File menu, select Save As.
In the Save as type box, select one of the following picture formats:
- 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)
Select Save. You will be prompted with the following dialog box:
Select Current Slide Only. The slide is saved in the new format and resolution, in the location that you specified in the Save in box.
- To verify that the slide is saved in the resolution that you specified, right-click the picture, and then select Properties.
Limitations
Change Resolution On Powerpoint Jpg
PowerPoint 2019, 2016, 2013, and 365
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.
Reference
How To Change Resolution On Powerpoint
https://docs.microsoft.com/en-us/office/troubleshoot/powerpoint/change-export-slide-resolution