What is a GUI file?
A .GUI file is a Graphical User Interface file. It stores data that controls how menus, buttons, and screens appear in software applications and video games. Game developers frequently use .GUI files to build their user interfaces. For example, Paradox Development Studio uses them in the Clausewitz Engine and Jomini Engine for games like Hearts of Iron IV. Other games, such as Starbound, CrossFire, and The Sims, also use .GUI files to define interface layouts. Often, these files are written in standard text formats like XML, JSON, or plain UTF-8 text.
Other uses for GUI files
Because .GUI has multiple possible meanings, it is not always a game file. A .GUI file can also be a Dr.Explain Project File created by Indigo Byte Systems. These files store help documentation projects and manuals. Additionally, tools like Help & Manual or hardware devices like the Flipper Zero use .GUI files for screen layouts and interface definitions.
How to open GUI files?
To open a .GUI file, you need to know its origin. Text editors like Notepad++ or Visual Studio Code can easily open .GUI files that contain plain text, XML, or JSON. If the file is a Dr.Explain Project File, you must use the Dr.Explain software to open and edit it correctly. If you are unsure about the origin of your file, viewer.online/gui can analyze .GUI files to identify the exact format and creator software, inspect the file structure, extract readable text, and check whether an online preview is available.
Best practices and file conversion
Since .GUI files can belong to many different programs, viewer.online/gui helps you identify the actual format of your file safely. If you need to edit the data in another program, we recommend file conversion to sensible target formats on convert.guru. Depending on the original code structure, you can convert a text-based .GUI file to .XML, .JSON, or .TXT.
Summary
In summary, viewer.online/gui is useful for identifying, inspecting, and understanding .GUI files without installing software or dealing with compatibility problems.