>> GROB file

GROB file format description

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

1 filename extension(s) found in our database.

.gro - HP-48 Graphic Object

The GRO graphic files are related to XnView. GRO file is a HP-48 Graphic Object. The HP-48 is a series of graphing calculators using Reverse Polish notation (RPN) and the RPL programming language. GROB (Graphic Object) is the file format used for HP48 graphics files. It encodes monochrome graphics in groups of four pixels, plus a header defining the image size.

Graphic files
- / -
grb, grob
HP-48 Graphic Object related extensions:
ZX Spectrum Hobetta Image
Pocket PC Bitmap Image
Amapi Image
Sony Mavica Picture
GoDot Image
TI-73 Bitmap

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

Can't open a .grob 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 .grob file extension is often given incorrectly!

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

gob, rob, gro, grb, grov, grib

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Dark Forces Game Archive
Gridded Binary Data
HP-48 Graphic Object
WinTask Compiled Executable

Operating systems

DataTypes.net currently supports the following operating systems:

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

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