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

Identification
Files begin with the ASCII string " ".

Software

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

Sample files

 * KESSLER Wireless Design - Samples
 * https://telparia.com/fileFormatSamples/image/nokiaGroupGraphics/