The GP4 file extension is related to the CCITT Group 4 image file format used by the Comité Consultatif International Téléphonique et Télégraphique.

There are 2 other file types using
the GP4 file extension!

gp4 icon.gp4 - Guitar Pro 4 project [common]

empty icon.gp4 - GTX Group IV format CALS picture

Detailed description

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GP4 file - CCITT Group 4 image file

What is gp4 file? How to open gp4 files?

File type specification:

Graphics file type icon Graphics file type

The GP4 file extension is also used for some sort of image file used by Comité Consultatif International Téléphonique et Télégraphique, an organization that sets international communications standards. CCITT, now known as ITU (the parent organization) has defined many important standards for data communications.

A protocol for sending fax documents over ISDN networks, the Group 400 protocol supports images of up to 400 dpi resolution.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .gp4 file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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