What is a GRS file?
A .GRS file is a data extension shared by many different software applications, primarily in 3D design and engineering. Because the .GRS extension has multiple possible meanings, it is often difficult to know what the file contains just by looking at the name. Most commonly, a .GRS file is a Gravity Sketch Sketch File created in Gravity Sketch, a popular virtual reality 3D design tool.
However, other programs also use the .GRS format. It can be a CAD graphic document from KOMPAS-3D, a civil engineering grid surface from Bentley Systems, a CAD drawing from T-FLEX CAD, or an Esko ArtiosCAD graphics file.
How to open GRS files?
The best way to open a .GRS file depends entirely on the software that originally created it. Because of this uncertainty, viewer.online/grs analyzes .GRS files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
Software and tools
If you know the origin of the file, you can download the appropriate software. For 3D virtual reality models, you will need Gravity Sketch. If the file is a technical drawing, you might need KOMPAS-3D or Business Studio. Some .GRS files are built on standard data structures. For example, some files are plain UTF-8 text, while others are compressed ZIP or DOC containers. In these cases, you can use basic tools like Notepad++ or 7-Zip to extract and inspect the internal data.
Summary
Since the .GRS extension is shared by so many programs, guessing the correct software can be very frustrating. Because .GRS files use the known 7z format, viewer.online/grs can safely open and display them online, eliminating compatibility problems.