GRO file format description

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

Application:

XnView

Category:

Graphic files

Mime-type:

application/octet-stream

Magic:

- / -

Aliases:

grb, grob

HP-48 Graphic Object related extensions:

.$s: ZX Spectrum Hobetta Image
.2bp: Pocket PC Bitmap Image
.2d: Amapi Image
.411: Sony Mavica Picture
.4bt: GoDot Image
.73i: TI-73 Bitmap

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

Can't open a .gro 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:

example.gro

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.

Open Control Panel > Control Panel Home > Default Programs > Set Associations.
Select a file type in the list and click Change Program.

The .gro file extension is often given incorrectly!

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

tro, nro, gdo, bro, ro, grp, grk, gr, go, geo, vro, fro, rro, rgo, gto

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.tro: IBM Voice Type Data
.gdo: Gerber Data Object
.tro: Visual Topo Document
.nro: Nintendo Switch Executable
.bro: PrintShop Deluxe Brochure
.grp: Windows 3.x Program Manager Group File

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

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

https://datatypes.net/open-gro-files

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

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