Question

What is the color depth of an image file format?

Answer 1

Color depth refers to the number of bits used to represent the color of a single pixel in an image. It determines the number of colors that can be displayed in an image. The color depth of an image file format is typically expressed in bits per pixel (bpp) or as a total number of colors that can be represented.

Common color depths for image file formats are:
- 1-bit (2 colors, typically black and white)
- 8-bit (256 colors)
- 24-bit (16.7 million colors)
- 32-bit (16.7 million colors with an additional alpha channel for transparency)

Some image file formats support different color depths, while others are specifically designed for a certain color depth. Different color depths offer varying levels of color accuracy and quality in images.