HTA File Extension

Have a problem opening a .HTA file? We collect information about file formats and can explain what HTA files are. Additionally we recommend software suitable for opening or converting such files.

What is the .HTA file type?

The .hta filename extension stands for the HTML Application (HTA) file type/format. HTA is Microsoft's invention intended to allow web applications to run outside the browser restrictions and generally behave similarly to regular desktop applications. HTA is a Windows-only technology, as running HTML applications (HTA) requires Microsoft Windows and Internet Explorer (IE).

An .hta file is a text-based HTML source-code file with additional HTA-specific markup in the <head> section. Basically, it is a renamed HTML web page (.htm or .html) that may invoke ActiveX components, contain JavaScript code, and has access rights on the level of a desktop application. When run, program code inside an .hta file is processed by the HTA handler ("mshta.exe") and typically launched in a separate IE-like window.

Microsoft Windows and IE treat .hta files as executables, and all active content inside an HTA file (ActiveX, JavaScript, etc.) is launched and executed without warning, posing a potential security risk. Any .hta file can be authored and edited in a text editor. All other browsers, except IE, would prompt to save an .hta file or select an application to open it with.

Software to open or convert HTA files

You can open HTA files with the following programs: 

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