Smallest 1x1 transparent PNG pixel possible We always try to generate the smallest possible PNG image. Our 1x1 transparent pixel for example uses only 68 bytes. If you know how to compress the PNG image any further, please let us know in the comments below. 1x1 transparent GIF pixel If you don't need color or alpha you could use a fully transparent 1x1 GIF pixel to save a few more bytes. Transpare