For a start, try not to use PowerPoint Pictures for any presentations. Tools like the ‘Windows Photo Gallery’ and ‘Windows Movie Maker’ are better suited to play your photos as a slideshow.
PowerPoint is best suited for presentations that include text, animation, clip arts, illustrations, and occasional photos or images. You will need to take some precautions when inserting even the occasional photo into PowerPoint.
Never do a simple insert or paste into the PowerPoint slide!
If you do so, you will notice that the photos start looking blurred, especially after you make some changes and save the file. This happens because PowerPoint compresses the photo by default. This reduces the file size, but unfortunately also reduces the clarity.
If you click on the ‘Picture Tools’ option, and then choose ‘Compress picture’, you will notice the settings as below:
Fortunately, you can turn off this auto-compression feature. To turn off compression on the open PowerPoint file, you can follow these steps.
- Click the Office Button, and then click ‘Save As’. This opens a dialog box.
- Click on ‘Tools’, and then click ‘Compress Pictures’.
- Look for the ‘Options’ tab and click on it.
- Un-select the option to ‘Automatically perform basic compression on save’. Click ‘OK’
- Click ‘Cancel’ on the ‘Compress Pictures’ dialog box.
Remember that you will need to repeat the above steps every time you open a PowerPoint file.
To permanently disable the compression on save, you can edit the registry file. This can be very tricky, and if you make mistakes, you may put your Windows operating system at risk. Ask your administrator for help if you are not sure about what to do.
To edit the registry file, follow these steps:
- Close all applications and open the registry editor. (Click Start -> Run, type regedit, and click OK)
- Search and find the key
(Use 14.0 for PowerPoint 2010)
- Create a new DWORD value named AutomaticPictureCompressionDefault, and set the value for the registry key to 0
- Close the registry editor and start PowerPoint.
Look for clipart to replace images as much as possible. When copying files from other Office products like Visio, paste using the special meta-file formats.