Image optimization for the web

This image has limited colors and was best optimized as a PNG file with 140 colors at 29.8kb.

Here is the same image as a JPEG with 90 quality at 31.7kb.

Here it is as a GIF with 225 colors. File size is 36kb.

This second image has more complex colors and was best optimized as a JPEG at a quality of 70. File size is 17.5kb.

Here it is optimized as a PNG with 150 colors. File size is 41.5kb.

And here it is optimized as a GIF with 175 colors. File size is 52.9kb.

This final image is a photograph and was best optimized as a JPEG. Quality is 80 and file size is 10.9kb.

Here it is optimized as a PNG with 256 colors. File size is 58.9kb.

And here it is optimized as a GIF with 256 colors. File size is 65.3kb.