Micrografx drawing
File type: Graphics file
Files with grf file extension were are used in old program from Micrografx. These were drawings saved in the program.
Found 7 different file type records with the same grf filename suffix.
File type category:
Graphics file
Date updated: July 20, 2017
The grf file extension is associated with some applications, such as Micrografx Desginer, developed by Micrografx.
The grf file contains drawing from this apps.
Micrografx was later acquired by Corel and the program discontinued.
Use compatible tools to work with *.grf files.
Compatible tools may be able to export *.grf files to other formats.
File type category:
Document file
Date updated: November 8, 2018
The grf file extension is associated with DPlot, a graph software for scientists and engineers available for Microsoft Windows operating system.
The grf file stores graph created in the DPlot software.
Use DPlot to work with *.grf files.
Probably can be converted to other formats.
File type category:
Document file
Date updated: October 3, 2026
Record marked as obsolete and not updated for a long time.
Insight II was a molecular modeling environment developed by Accelrys Software Inc. for Linux and Unix systems. Its grf file contains a standard graph definition used by the application.
The format is application-specific and is intended to be used as part of an Insight II installation rather than as a standalone document. Accelrys is now owned by Dassault Systèmes.
The format is obsolete, so it is unlikely to be encountered in current molecular modeling workflows.
Open the grf file with Insight II on Linux or Unix. The file is not intended to be opened as a general-purpose graph document.
Because Insight II and this format are obsolete, a suitable installation may be difficult to obtain. Do not edit the file in a text editor unless the contents are known to be plain text and a backup is available.
There is no generally applicable conversion path for an Insight II standard graph definition file. The format is specific to Insight II and is not a normal interchange format for graph data.
If an installation of Insight II can read the file, any available graph export or recreation features in that software are the most appropriate options. Otherwise, the graph definition may need to be recreated in another application.
Software applications that handle other tasks involving grf files:
Linux/Unix
File type category:
Graphics file
Date updated: November 16, 2018
The grf file extension is associated with GraphEdit.
GraphEdit (part of DirectX SDK) is a visual tool for building filter graphs. With GraphEdit, you can experiment with a filter graph before you write any application code.
The grf file stores filter graph.
Use compatible tools to work with *.grf files.
Probably can be exported to other formats.
Software applications that handle other tasks involving grf files:
Microsoft Windows
File type category:
Game file
Date updated: October 9, 2026
The GRF file extension is associated with OpenTTD, an open-source rework of the original Transport Tycoon business simulation game. OpenTTD is available for Microsoft Windows and other platforms.
A GRF file contains compiled graphics resource data, such as sprites and definitions used by the game. NewGRF files can provide custom graphics and modify in-game content, including vehicles, buildings, industries, and other objects.
GRF files are loaded by OpenTTD as part of its NewGRF system and are not intended to be opened as ordinary images.
Install the GRF file as OpenTTD content, then enable it in the game's NewGRF settings. OpenTTD for Microsoft Windows can also download and manage supported content through its built-in content system.
A GRF file is normally used by OpenTTD rather than opened for direct viewing or editing in another application.
There is no standard image or document conversion process for an OpenTTD GRF file. It is a compiled game-resource format intended for use by OpenTTD.
To create a different GRF, the corresponding NewGRF source project must be edited and compiled using tools intended for OpenTTD content development.
Software applications that handle other tasks involving grf files:
Microsoft Windows
File type category:
Game file
Date updated: December 28, 2018
The grf file extension is also used by Ragnarok Online, an MMORPG based on Norse mythology. Users can create characters and venture off alone or in groups in far-flung fantasy worlds full of adventure.
The .grf file contains game archive.
You cannot open this file type manually, it is accessed by the game automatically.
These games files cannot be converted to anything else. However, sometimes modding.
Software applications that handle other tasks involving grf files:
Microsoft Windows
File type category:
Bitmap image file
Date updated: October 30, 2019
Record marked as obsolete and not updated for a long time.
The grf file extension is related to the TRS-80, a family of 8-bit computers, developed by Tandy Corporation.
The grf file contains picture image from picture image editors developed by TR-80.
Use RECOIL to view content of *.grf files.
Probably can be exported to other formats.
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