Convert jpt to png Online: jpt2png
You can use Tom's Editor to easily convert images from
JPEG-2000 Code Stream Syntax .JPT to Portable Network Graphics .PNG.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
JPEG-2000 Code Stream Syntax is an image format with extension JPT.
Portable Network Graphics is an image format with extension PNG.