How to Open Jp2 File
Jp2 is an extension of JPEG2000 image file formats. These can be viewed by Photoshop Acdsee or Irfan View softwares.
It is a file type that used for saving photos or images. These formats may cause little disruptions on image quality because it is compressed type of file.
You may need better quality of images. In this case you should use higher quality image formats like TIFF or TGA.
Jp2 extension can be viewed with any image software. You can easily get one of them free online.
which software to open Jp2 file
Photoshop, Acdsee, irfan View
Opening links for Jp2 file