Page 18 of 28PREVNEXT

So that's how! Great PowerPoint features

Options in the Compress Pictures dialog box

Callout 1 Web/Screen optimizes the resolution to 96 dots per inch (dpi).
Callout 2 Print optimizes the resolution to 200 dpi.
Callout 3 Select No Change if you don't want the resolution touched at all and are choosing other options.
Callout 4 The Compress pictures option reduces color format with no loss to picture quality. (This has the same name as the main feature button but has a specific purpose here.)

When you click Compress Pictures on the Picture toolbar, you see the dialog box shown on the left.

Reduce resolution

Note the area in the middle of the dialog box called Change resolution. Use this when you don't need every single pixel in the current image to get an acceptable version of it for your slide show or Web presentation or your printed output. This can be effective with images you've scaled to be smaller, as their "dots per inch" actually increase in that case.

Changing the resolution can affect image quality. Before saving your file, look at your images in Slide Show mode after reducing the resolution. If you're not happy with the reduced resolution, select that picture in normal view, and use the Reset Picture button Button image on the Picture toolbar to restore the original resolution.

Reduce color format

Depending on how many colors are used in the image, sometimes its color format can be reduced to make its file size smaller. The Compress pictures option (within the Compress Pictures dialog box) does this, making color take up fewer bits per pixel. There's no loss in quality.

Page 18 of 28PREVNEXT