When you need to show your slides via a projector, especially low-quality projectors, what you have to accept is that the display colors cannot be as perfect as on a computer screen, not to mention the effects. negative due to environmental lighting. It is these things that can cause difficult to read text because it blends into the background color.
In order to avoid this situation, it is best to choose the font colors - backgrounds with high contrast and comfort for the eyes of the viewer. Typical are four pairs of colors: white - black, red - blue, green - pink and blue - yellow.
It takes a very long time to choose the right font and color for your presentation, but when opening with another computer, you suddenly realize that this is not the font that I have chosen. This not only affects the aesthetics of a presentation slide, but also presents problems, such as placing images in the middle of the text mentioned above.
To avoid this, the best way to save a presentation slide is to embed the fonts you used during the slide design process, by going to PowerPoint's Options section, selecting Save and checking for Embed fonts section in the file.
Just like fonts, audio files with your presentation slides are also things that can disappear if you're not careful when you bring the slide to another computer. However, unlike fonts, to solve this problem, you don't just embed the audio file in the slide, because each version of PowerPoint has different ways to insert sound files, so when If you embed an audio file in a PowerPoint 2010 slide, even PowerPoint 2007 may not be readable.
The best way to bring an audio file into a presentation slide is to link it directly to the audio file instead of embedding it in a slide. To do this, you must first create a folder containing both the slide and audio files you use. For PowerPoint 2007, go to PowerPoint Option , select Advanced , scroll down to Save , in the section Link sound with file size greater than , please adjust so that this parameter is smaller than your smallest audio file size. Unlike PowerPoint 2007, the 2010 version does not have this option, so whenever you insert an audio file, in the Insert Audio panel, select the file you want by clicking on the file, go to the Insert menu at the bottom corner. Right of the table and select Link to File . From here, every time you want to move your presentation slide, you just need to copy an entire folder, it will definitely not happen the lost audio file.