7 file types use the .grf file extension.

What is a GRF file?

Compressed file archive used by Ragnarok Online, a Korean multiplayer game; includes compressed images, sounds, and other data files loaded by Ragnarok.

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Common GRF Filenames

Category: Game Files

DPlot Graph File

2D or 3D graph created by DPlot, a program used for plotting scientific data; saves the graph type and associated data; used for distribution plots, wireframe meshes, 3D projections, polar charts, probability charts, triangle plots, hydraulic scales, and many other types of graphs.

DPlot is primarily used by scientists, engineers, and other technical professionals. The graphs are often included in presentations and scientific journal articles.

NOTE: GRF files can be viewed with the free DPlot Viewer.

Programs that open GRF files

Updated: July 28, 2011

CloverDX Data Transformation Graph

Data transformation file created by Javlin CloverDX Designer, an Eclipse-based data integration application; saved using XML formatting and contains a diagram of data readers, writers, transformers, and other data manipulators; used for data integration, cleansing, migration, and warehousing; can be run on a desktop computer for smaller jobs or on a cluster of CloverDX servers for larger jobs.

The CloverDX suite includes several editions of the software, including Community, Desktop, Enterprise, Cluster, and OEM versions. The GRF files are created using the CloverDX Designer, which is included with each software edition.

The Eclipse IDE is a free Java development application and CloverDX Desktop is a set of proprietary Eclipse plugins that allow CloverDX projects and GRF files to be created.

NOTE: Javlin CloverDX was formerly known as Javlin CloverETL.

Programs that open GRF files

Updated: December 13, 2018

Grapher Graph File

File created by Grapher, an application used for making 2D and 3D graphs; can store one of many different kinds of graphs, such as a line, scatter, or bar graph; also supports advanced plotting types such as a ternary, box-whisker, and hi-low-close plots.

Graphs created in Grapher are used for creating technical graphs for publication and presentations.

NOTE: GRF files do not contain the source data used to generate the graph. They only store the rendered graph and parameters required for scaling. This differs from .GPJ files, which contain the data as well as the rendered graph.

Programs that open GRF files

Updated: January 17, 2012

Generic Graph File

A GRF file contains graph data created by various data visualizing and analyzing programs, such as Micrografx Graph Plus, GraphEdit, and Accelrys Insight II. It stores data in binary or text format, depending on the application that generated it, and may include metadata describing graph properties. GRF files are used for tasks like plotting mathematical functions and displaying complex datasets visually.

The generic GRF graphing format was common in the 1990s when the most prominent programs that supported them, including Micrografx Graph Plus, GraphEdit, and Accelrys Insight II, were widely used. Users could import the files into compatible programs to visualize trends, generate charts, and analyze data.

Due to the format's versatility, various industries, including scientific research, engineering, and finance, supported the format. However, because GRF is a generic file type, the exact structure of the data inside varies depending on the software that created it, making it important to open them with the corresponding application for accurate rendering and analysis.

NOTE: The GRF format is largely obscure since the most prominent programs supporting them were common in the 1990s but are now discontinued.

You can open GRF files with various programs, including Micrografx Graph Plus, GraphEdit, and Accelrys Insight II. However, these programs are no longer maintained.

You may be able to open GRF files with GraphStudioNext, since it is an open-source alternative to GraphEdit. However, it will likely only support GRF files created by GraphEdit.

Programs that open GRF files

Updated: February 12, 2025

Transport Tycoon Graphics Resource File

Resource file used by the Transport Tycoon (TT) and Transport Tycoon Deluxe (TTD) railroad business simulation games; contains a collection of sprites, which store the 2D graphics for game objects; used for displaying and animating railroad vehicles, scenery, and other game objects.

The original version of GRF files supported simple sprites. However, the new open source variants of Transport Tycoon, including OpenTTD and TTDPatch, support new graphics data in GRF files. OpenTTD's new format, called NewGRF, can include data for vehicles, cargo, buildings, railroad types, and industries.

OpenTTD provides GRF game packages, which are downloadable NewGRF files that can be applied to the game to display custom graphics and to alter game properties.

Programs that open or reference GRF files

Updated: February 21, 2011

Minecraft: Legacy Console Edition Game Rule File

A GRF file may also be a game data file used by a Minecraft: Legacy Console Edition game. It contains rules that Minecraft executes in a game world, to show messages and control how players and items spawn. Minecraft: Legacy Console Edition's tutorial and mini-game worlds use GRF files.

Minecraft: Legacy Console Edition is gamers' collective name for console versions of Minecraft developed by 4J Studios. These versions of Minecraft have been replaced by Minecraft Bedrock Edition.

The 4J Studios versions of Minecraft include many proprietary game data files, which other versions of Minecraft do not use. These include GRF files. Each GRF file specifies certain events and settings applied to a default Minecraft: Legacy Console Edition world ( .MCS file). For example, one GRF file specifies the initial messages, health, hunger, and items a player receives in the game's tutorial world. Other GRF files specify when chests refill and where player spawn points are located in mini-game worlds.

You can open a GRF file with Universal Minecraft Tool (Windows), MCCToolChest (Windows), or PCK Studio (Windows). Doing so allows you to edit the rules the GRF file contains.

Programs that open GRF files

Updated: March 8, 2023