This PhotoShop plugin lets you open/ save and edit JNG file format files.The JNG file format plugin for Photoshop lets you open/ save and edit  JNG file format files.The JNG (JPEG Network Graphics) Format encapsulates a JPEG datastream in PNG-style chunks. Although JNG was mainly a MNG sub-format, standalone JNG files are now possible with the JNG file format plugin.Requirements:

Ссылка: http://www.libp..bin/JNG_Plugin-0.8-photoshop7-win32.zip