View HTM Files Online
An .htm file is a webpage written in the Hypertext Markup Language (HTML). The text an .htm file contains defines a webpage's elements and layout. Web browsers, such as Google Chrome and Microsoft Edge, process the tags in .htm files and render them as a webpage.
While most webpages are saved with a .html extension, some Microsoft web development applications save them as .htm files. If an .htm file does not open correctly as a webpage, you can try changing the file extension to .html. If you want to view or edit an .htm file as a plain text document, you can change its extension to .txt and open it in a text editor.
About File Helper
File Helper is a free web-based file utility that can open Hypertext Markup Language files and over 150 other file formats directly in your web browser. It displays file properties, including metadata, and image EXIF data, along with information about the corresponding file type. File Helper can also view and convert images to several common formats. Have an unknown file or a file without an extension? No problem — File Helper can identify over 15,000 file types.