Why can’t JPEGS be transparent?
In: 1537
Each pixel in a JPG image has three data points.
RGB (Red, Green, Blue)
Each pixel in a PNG image has four data points
aRGB (Alpha, Red, Green Blue)
Each of those datapoints is called a channel, each channel can be set by a value of 0-255. Those values are then used to turn the pixel the correct color and or transparency. For instance…
R – 0
G – 255
B – 0
Would be full green on a JPEG
A – 175
R – 0
G – 255
B – 0
The above would be half way transparent and the color green.
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