Nokia Group Graphic

Nokia Group Graphic (or Nokia Group Graphics, Nokia Phone Group Graphics, NGG) is a bi-level raster image format used by some Nokia phones. It is identical to Nokia Operator Logo, except that it has a somewhat different header format.

Format
File have a 16-byte header, followed by pixel data in ASCII text format.

Identification
File begin with the ASCII string " ".

Software

 * XnView
 * Ringtone Tools
 * Netpbm: pbmtonokia, with " " option (write-only)