M3URL file format description

Many people share .m3url files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .m3url file can be edited, converted or printed with. On this page, we try to provide assistance for handling .m3url files.

1 filename extension(s) found in our database.

.m3url - SMIL MP3 Playlist Document

The M3URL multimedia files are related to QuickTime Player. The M3URL file is a SMIL MP3 Playlist Document. The Synchronized Multimedia Integration Language is a W3C recommended XML markup language for describing multimedia presentations.

QuickTime Player
Multimedia files
- / -
SMIL MP3 Playlist Document related extensions:
CrystalPlayer Skin
RWAVDC Data File
iRiver iQuickList Playlist
KuGou Music Lyrics
Graphical System for Presentation File
WinAMP 3 Playlist

Naturally, other applications may also use the .m3url file extension. Even harmful programs can create .m3url files. Be especially cautious with .m3url files coming from an unknown source!

Can't open a .m3url file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .m3url file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:


Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Maxthon Browser URL Data

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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DataTypes.net >> M3URL file