1 MB works out at 32 bits per pixel for a 512x512 image. The JPEG is probably not rasterized until it's viewed, which would explain why only an amount correspo

1 MB works out at 32 bits per pixel for a 512x512 image. The JPEG is probably not rasterized until it's viewed, which would explain why only an amount corresponding to the compressed image is leaked when the tab is hidden.