TG4 File Extension
Tiled Group 4 Raster Image Format
- File Type tg4
- Developer Bentley Systems
- Popularity
- Application MicroStation
- Category Raster Image Files
What is a TG4 file?
The TG4 file extension is linked to Tiled Group 4 Raster Image Format and belongs to the Raster Image Files category, which includes 575 files.
The Tiled Group 4 Raster Image Format (TG4), created by Bentley, is one of file format they developed, and they also built 9 programs to support them.
TG4 files are supported by Linux, Windows and Mac OS. When working with TG4 files, you can rely on 2 programs, including XnView and MicroStation.
Programs that support TG4 files
How to open a TG4 file?
If you can’t open a TG4 file, it is usually because the necessary software is missing. To resolve the issue, select the right program from the list for your operating system. Then go to the official website of the developer, download the software, and install it.
The most popular programs for working with TG4 files are XnView and MicroStation. To install the latest version of MicroStation on your computer, visit the Bentley website where you can download the version available for all operating systems.
Following installation, TG4 files should be automatically opened with MicroStation.
Set MicroStation as your default TG4 viewer
Changing the default program in Windows
- Right-click on your TG4 file, then choose the "Open with" option and select "Choose another application" from the available options;
- From the list of applications in the pop-up window, find and select MicroStation as your desired application;
- Check the "Always use this app" checkbox, and then click "OK" to set your chosen app as the default for opening TG4 files.
Set default app to open files on Mac
- Right-click or Control + left-click on the desired TG4 file to open a menu of available actions;
- Select "Open in application" and click "Other";
- Look at the bottom of the window, where you will see the "Enable" menu. "Recommended Programs" will be selected as the default option;
- Within this menu select "All Programs" and navigate to MicroStation. Check the box next to "Always open in app" to make sure it’s the default option.
How to edit a TG4 file?
To edit TG4 files, you need to install specialized software that allows you not only to open but also to modify raster image files. Online TG4 editors usually provide fewer features than software created specifically for Tiled Group 4 Raster Image Format.
Best TG4 editors in 2026
Taking into account the provided details, we have prepared a list of TG4 editors that match your needs.
| TG4 Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| MicroStation | Bentley | Windows | 4.5 out of 5 (41 review) |
Solving Common TG4 File Challenges
When issues arise with TG4 files, they can generally be fixed with small software tweaks. Use the troubleshooting tips below to help resolve them.
What are the warning signs that my TG4 file may be corrupted?
Corrupted TG4 raster image files may have one or more of the following symptoms:
- Error messages appear during the course of working with the file;
- Poor performance when editing a file in MicroStation;
- Attempts to open the file result in errors or failed results;
- Unexplained increase in TG4 file size;
- The file causes MicroStation or other programs to hang or crash during operation;
Why does MicroStation crash?
MicroStation crashes can be caused by outdated software. Keep your Bentley products up to date by installing the latest updates.
A simple restart of your computer can often fix many common problems, which is why it is the recommended first step before making any adjustments to your software settings.
How to repair a corrupted TG4 file?
Use a data recovery program to open the damaged TG4 file and from the menu choose "Repair" function to start the repair process. Please be patient while the recovery process completes, which will automatically restore the damaged raster image files.