Question

Which image format uses solely an indexed representation of color images?

Answer 1

Step 1

Image format uses solely an indexed representation of color images is -

GIF it is always an indexed color file from 1 to 8-bits per pixel.

And, GIF can have palette of 24-bit colors, but there is condition that is only a maximum of 256 of them which colors depend on your image colors.

GIF is most of the time limited colors for color photos, but is generally very great for graphics.

GIF uses lossless LZW compression always.

The designed for Compu Serve of 8-bit computer video, before the use of 24 pieces or JPG, for the video presentation on unlocking the speed modem.

GIF discard all the Exif data, it is because GIF is designed for video screen purposes, and also GIF do not keep print resolution costs.

And GIF always uses LZW's unmistakable compression, but mostly remains the displayed color file 1 to 8-bits per pixel.

Step 2

A GIF can also have 24-bit color palette, but 256 of it . GIFs have limited color graphics, but are generally suitable for graphics.

Never use the GIF with the color shown in color photos today, color is very limited.

It also provides transparency and animation.

mean while , GIF is best for the web graphics.

Example - With limited number of colors. and with just a few color graphics, GIF can much smaller than JPG, with brighter colors than JPG).

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