PNG chart export options

Image size. Percentage of original chart size, up to 200 percent.

Color Depth. Determines the number of colors in the exported chart. A chart that is saved under any depth will have a minimum of the number of colors that are actually used and a maximum of the number of colors that are allowed by the depth. For example, if the chart contains three colors--red, white, and black--and you save it as 16 colors, the chart will remain as three colors.

• If the number of colors in the chart exceeds the number of colors for that depth, the colors will be dithered to replicate the colors in the chart.
• Current screen depth is the number of colors currently displayed on your computer monitor.