Canvas

toDataURL("image/jpeg", …), no background

Quality: 0.0

Quality: 0.1

Quality: 0.2

Quality: 0.3

Quality: 0.4

Quality: 0.5

Quality: 0.6

Quality: 0.7

Quality: 0.8

Quality: 0.9

Quality: 1.0

toDataURL("image/jpeg", …), white background

Quality: 0.0

Quality: 0.1

Quality: 0.2

Quality: 0.3

Quality: 0.4

Quality: 0.5

Quality: 0.6

Quality: 0.7

Quality: 0.8

Quality: 0.9

Quality: 1.0