Filename Extensions
If you are seeking information about file extensions, then you are in the right place at right time.

Details of extension .htm

1 extension(s) and 0 alias(es) in our database

Below, you can find answers to the following questions:

  • What is the .htm file?
  • Which program can create the .htm file?
  • Where can you find a description of the .htm format?
  • What can convert .htm files to a different format?
  • Which MIME-type is associated with the .htm extension?
Hypertext Markup Language Document .htm file icon

Hypertext Markup Language Document

HTM file is a Hypertext Markup Language Document. HyperText Markup Language (HTML) is a markup language designed for the creation of web pages with hypertext and other information to be displayed in a web browser.
Category: Document files
Application: Mozilla Firefox
Program name: -
Mime-type: text/html
Magic bytes (HEX): -
Magic string (ASCII): -
ht3, ht5, html, html5
Related extensions:
Active Server Page
Extended HTML Template
PHP Script
Cascading Style Sheets
Compiled HTML Help
JSP Markup Language
Answer Wizard Index
Dreamweaver Web Template File
Microsoft Frontpage Theme Package

Other types of files may also use the .htm file extension. If you have helpful information about .htm extension, write to us!

Is it possible that the filename extension is misspelled?

We found the following similar extensions in our database:

4DOS Batch File
GTViewer Manager File
HFM.NET Configuration
Sublime Text Data
HHsearch Database
WinHelp Context ID
HighMAT File
Polar Heart Rate Monitor Data
Humminbird Track Data

The .htm filename extension is often given incorrectly!

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

ntm (1), jtm (1), htn (1), htk (1), hrm (1), hm (1), ytm (1), hgm (1), ttm (1), gtm (1), thm (1), mtm (1), hym (1), htl (1), ht (1)

Can't open a .htm file?

If you want to open a .htm file on your computer, you just need to have the appropriate program installed. If the .htm association isn't set correctly, you may receive the following error message:

Windows can't open this file:

File: example.htm

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 from a list of programs that are installed on your computer.

To change file associations:

  • Right-click a file with the extension whose association you want to change, and then click Open With.
  • In the Open With dialog box, click the program whith which you want the file to open, or click Browse to locate the program that you want.
  • Select the Always use the selected program to open this kind of file check box.

Supported operating systems

Windows Server 2003/2008/2012/2016, Windows 7, Windows 8, Windows 10, Linux, FreeBSD, NetBSD, OpenBSD, Mac OS X, iOS, Android