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.YML File Extension

File TypeYAML Document

DeveloperN/A
Popularity
3.9 (85 Votes)
CategoryDeveloper Files
FormatText

What is a YML file?

A YML file is a text document that contains data formatted using YAML (YAML Ain't Markup Language), a human-readable data format used for data serialization. It is used for reading and writing data independent of a specific programming language. Because YAML syntax is language-agnostic, YML files can be incorporated into programs written in most popular programming languages, including C/C++, Ruby, Python, Java, Perl, C#, PHP, and others.

More Information
Screenshot of a .yml file in GitHub Atom
YML file open in GitHub Atom

YML files are most commonly used as configuration files, which define a program or application's settings. If a program uses a YML file as a settings file, you can edit the program's settings by opening and editing the YML file in a text or source code editor. Most settings-related YML files include comments that explain how the file can be used to adjust a program's settings.

NOTE: YAML files are more commonly saved with the .YAML extension.

Common YML Filenames

database.yml - A YML file that Ruby on Rails uses to save connection information when connecting to a database.

How do I open a YML file?

You can open a YML file in any text editor, such as Microsoft Notepad (Windows) or Apple TextEdit (Mac). However, if you intend to edit a YML file, you should open it using a source code editor, such as Microsoft Visual Studio Code (cross-platform) or GitHub Atom (cross-platform). These applications provide helpful source code editing tools and highlight YAML syntax correctly.

FREE DOWNLOAD
Open and view .YML files with File Viewer Plus.

Programs that open YML files

Updated 3/31/2021

About YML Files

Our goal is to help you understand what a file with a *.yml suffix is and how to open it.

The YAML Document file type, file format description, and Mac, Windows, Linux, Android, and iOS programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

If you would like to suggest any additions or updates to this page, please let us know.