Opening a GROB File

The GROB file type is primarily associated with HP-48/48sx/49.

GROB	File extension: GROB
	File type:	Graphic Object Bitmap

What is a GROB file

GROB files mostly belong to HP-48/48sx/49 by Hewlett-Packard Development Company, L.P. Usually given a .GRO extension.

How to open GROB files

You need a suitable software like HP-48/48sx/49 to open a GROB file. You need a suitable software like HP-48/48sx/49 from Hewlett-Packard Development Company, L.P. to open a GROB file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your GROB file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a GROB file directly in the browser:. Just drag the file onto this browser window and drop it.

Online GROB File Viewer

Choose your .grob file to view this image

or drag and drop it here

Online File Viewer

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How to extract texts from GROB files or capture a screenshot to PDF, JPG, DOCX, TXT, ...

If you want to extract texts from GROB file or capture a screenshot, you can use our free Online GROB File Viewer:

To do so, click the "Choose your .grob file to view this image" button above.
After your file is opened in browser,
click "Save as..." in the menu.
Then choose the file format (e.g. JPG, PDF, DOCX, TXT, ...) you want.
Download the converted file.

What to Do When a .GROB File Fails to Open

Because .GROB files can originate from different programs, they aren't universally openable by standard image viewers.

Identify the Source: If it came from a vintage calculator enthusiast or an engineering workflow, it is likely a Hewlett-Packard HP-48/48sx/49 Graphic Object Bitmap.
Check the Header: Open the file in a hex editor to inspect its first few bytes:
- GROB or HPHP indicates a standard HP calculator graphic.
- PK suggests a zipped archive.
Use the Original Software: The original program is usually required to view these graphics; try HP calculator emulators (like Emu48), XnView, or ask the sender if uncertain.
Use this Webpage: Drag and drop your .GROB file onto this page to automatically detect its format, extract readable metadata, and preview the contents.

Technical Data for GROB File Extension

File classification:

Graphic

Identifier:

Hex: 48 50 48 50 34 38 2D, ASCII: HPHP48- (provided by TrID database)

Related files:

grod, vfs, swi, vee

Related links:

XnView, HP-48 Graphic Editors

a grob Graphic Object Bitmap is a special file format by Hewlett-Packard Development Company, L.P. and should only be edited and saved with the appropriate software.

How to solve problems with GROB files

Associate the GROB file extension with the correct application.
Update your software that should actually open graphic object bitmaps. Because only the current version supports the latest GROB file format. Search, therefore, e.g. on the Hewlett-Packard Development Company, L.P. manufacturer website after an available HP-48/48sx/49 update.
To make sure that your GROB file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .GROB file online - secure, fast, and no downloads needed.