SGL File Extension

SGL file icon

OpenOffice.org/StarOffice Master Document

What is a SGL file?

Files with the SGL extension are specifically tied to OpenOffice.org/StarOffice Master Document, a Document Files type, and there are 969 files in this category.

SGL file support extends to various operating systems, including Windows, Linux and Mac OS. To open a SGL file, you can choose from 5 programs such as StarOffice, OpenOffice Writer and LibreOffice Writer.

How to open a SGL file?

If you cannot open a SGL file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.

Thanks to their popularity, StarOffice, OpenOffice Writer and LibreOffice Writer are often the go-to programs for managing SGL files. If you need the newest version of StarOffice, just access the Oracle website. From there you can download the installer compatible with all systems.

Once StarOffice is installed, the OS should configure it as the default tool for opening SGL files.

Make StarOffice the default SGL viewer

Change the default app to open files on Mac

  1. Right click or use Control + Left Click on the desired SGL file to access a dropdown menu of actions;
  2. Choose "Open in Application" and click "Other";
  3. Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
  4. In this menu, select "All Programs" and search for StarOffice. Check the box next to "Always open in app" to make it the default option.

Change a default app in Windows

  1. Start by right-clicking on your SGL file, then select the "Open with" option and choose "Choose another app" from the menu that appears;
  2. Inside the popup window, scroll through the list of applications and specifically choose StarOffice as the application to associate with your SGL file;
  3. Check the "Always use this app" checkbox and click "OK".

Finding answers to SGL file problems

If SGL files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.

What can lead to sudden StarOffice crashes?

Insufficient updates for Oracle products can cause StarOffice to crash. Be sure to regularly install the latest software updates.

A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.

What is the recommended approach to repair a damaged SGL file?

Use a recovery program to open the damaged SGL file, and in the menu, click "Repair" to start the repair operation. Wait for the recovery process to finish as it will automatically restore the damaged document files.

What are the ways to check if my SGL file is damaged?

Characteristics of corrupted SGL document files can include:

  • The file encounters problems during the opening process or shows error indications;
  • Editing the archive in OpenOffice Writer is hampered by poor overall performance;
  • The file causes StarOffice or other software to hang or crash during various operations;
  • An unexplained increase in the size of the SGL file;
  • Actions performed on the file result in the appearance of error notifications;

How to edit a SGL file?

To modify SGL files, you need to install special software that makes it possible to open and edit document files. Online SGL editors are more restricted compared to software designed for OpenOffice.org/StarOffice Master Document.

Best SGL editors 2026

According to these factors, we have compiled a list of available SGL editors.

SGL Editor SoftwareDeveloperPlatformsOverall Rating
OpenOffice WriterOpenOfficeWindows, Mac OS, Linux4.7 out of 5 (37 reviews)
LibreOffice WriterTDFWindows, Mac OS, Linux4.5 out of 5 (40 reviews)
StarOfficeOracleWindows4.1 out of 5 (35 reviews)

Convert files to and from SGL

If handling a SGL file is problematic, consider converting it to alternative formats such as PDF or other supported types.

After converting a SGL file, some capabilities may be limited, but you can often convert it back to the original format.

Convert SGL to other file formats