Convert jbig to png Online: jbig2png

You can use Tom's Editor to easily convert images from
JBIG image .JBIG to Portable Network Graphics .PNG.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

JBIG

JBIG image is an image format with extension JBIG.

PNG

Portable Network Graphics is an image format with extension PNG.