.BMK File Extension

Backup file created by BillMinder, a personal bill reminder application for iOS devices; saves an encrypted backup that contains a snapshot of a user's data; enables the bill reminder information to be restored in the application.

A BMK file is a bookmarks file used by Microsoft Windows Help, a program included with Windows 3.0 to 8.1 that lets users read help information. It contains user bookmarks for Windows help documents (.HLP files), allowing users to save locations in the documents for quick navigation.

Microsoft introduced WinHelp in Windows 3.0 in 1990. The WinHelp browser allowed you to look up help documentation about the operating system and related applications. Microsoft then replaced WinHelp with Windows Help in 2009.

When viewing a help document in Windows Help, you can mark a particular area of interest that you want to return to in a document. When you create the bookmark, Windows Help saves the location in the help document in the BMK file.

NOTE: Microsoft discontinued Windows Help when it released Windows 10 in 2015.

You can open a BMK file with Microsoft Windows Help. However, Microsoft discontinued Windows Help when it released Windows 10 in 2015. If you are still using a Windows 8.1 or earlier, you can manage BMK files by selecting Bookmark in the Windows Help menu.

Bookmark file created by PowerDVD, an advanced video player for HD and 3D movies; contains a bookmark, called a MovieMark, for a video, including a timestamp, video information, and user comments.

BMK files are used to share movie reviews and comments over email and the Internet.

Bookmark shortcut stored on Nokia mobile phones; contains a URL and a reference to an icon, which is displayed for the bookmark; used for storing website or file shortcuts; can be viewed with a text editor, although some information may be obscured.