GRG file format description

Many people share .grg files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .grg file can be edited, converted or printed with. On this page, we try to provide assistance for handling .grg files.

1 filename extension(s) found in our database.

.grg - GreatFamily Graphic Gallery

The GRG document files are related to GreatFamily. The GRG file is a GreatFamily Graphic Gallery. GreatFamily is an easy-to-use tool for graphical family tree editing and web page creation. The GreatFamily seems to be no longer supported.

Document files
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GreatFamily Graphic Gallery related extensions:
GreatFamily Genealogy Data

Naturally, other applications may also use the .grg file extension. Even harmful programs can create .grg files. Be especially cautious with .grg files coming from an unknown source!

Can't open a .grg file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .grg file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

brg, frg, gdg, gfg, gg, ggg, ggr, gr, grb, grf, grh, grn, grr, grt, grv

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

FrogTeacher Folder Package
GEM Graph Document
MegaHAL Greeting Data
Symantec LiveUpdate TRG Data
ILWIS Graphs Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .grg file format, then write to us! >> GRG file