Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.FXML
File Type
JavaFX Scene Builder Layout File
Category
Programming
Best first step
Use compatible software
Quick Summary
A practical overview of the .fxml file format
FXML is an XML-based user interface markup language created by Oracle Corporation for defining the user interface of a JavaFX application. It provides a sophisticated way to separate the application logic from the layout design, strictly adhering to the Model-View-Controller (MVC) design pattern. B…
File extension
.FXML
File type
JavaFX Scene Builder Layout File
Category
Programming
Recommended action
Open with a trusted compatible app
How to open a .fxml file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .fxml.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .fxml file?
File extension details and usage information
FXML is an XML-based user interface markup language created by Oracle Corporation for defining the user interface of a JavaFX application. It provides a sophisticated way to separate the application logic from the layout design, strictly adhering to the Model-View-Controller (MVC) design pattern. Because FXML is based on the eXtensible Markup Language (XML), it is inherently human-readable and can be edited with any standard text editor, though it is most efficiently managed through visual design tools like Gluon Scene Builder. FXML allows developers to define complex UI hierarchies, apply CSS styling for visual consistency, and link UI components directly to controller classes written in Java or other JVM-based languages. This separation of concerns allows designers to focus on the visual aesthetics and user experience while developers focus on the underlying business logic and functionality. It is highly extensible and supports the inclusion of custom components, resource bundles for localization, and even embedded scripts, making it a cornerstone for building modern, cross-platform desktop applications with rich graphical interfaces.
Software Compatibility
Programs that may open or work with .fxml files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .fxml files be converted?
Options for saving or exporting this file to another format
In many cases, a .fxml file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .fxml file.
Why can't I open a .fxml file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .fxml format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .fxml files
To open a .fxml file, use software that supports this file format.
- Gluon Scene Builder
- IntelliJ IDEA
- Eclipse IDE
- NetBeans IDE
- Visual Studio Code
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .fxml file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.