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.HTM File Extension

File TypeHypertext Markup Language File

3.9 (229 Votes)
CategoryWeb Files

What is an HTM file?

An HTM file is an HTML webpage used by web browsers, such as Google Chrome, Microsoft Edge, and Mozilla Firefox. It may contain hyperlinks and markup language, which defines the elements and layout of a webpage.

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Screenshot of a .htm file in Microsoft Visual Studio Code 1
HTM file open in Microsoft Visual Studio Code 1

Unless you are a web developer, you will most likely never need to open an HTM file since the HTML in the file is parsed by your web browser. If you want to view the HTML of a webpage, select View Source from the View menu in your web browser (View → Developer → View Source in Chrome).

HTM files can also be opened using a basic text editor since the file is saved in a plain text format. However, a source code editor should be used to modify HTM files because they come with helpful coding features.

HTM files serve the exact same purpose as .HTML files, but are much less common. The .htm extension arose with the use of Microsoft web development software, such as FrontPage, SharePoint Designer, and Expression Web.

Open and view .HTM files with File Viewer Plus.

Programs that open HTM files

Updated 4/25/2019

About HTM Files

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

The Hypertext Markup Language file type, file format description, and Mac, Windows, Linux, and Android 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.