HTT File Extension
Hypertext Template Format
- File Type htt
- Developer Microsoft
- Popularity
- Application Microsoft Windows
- Category System Files
- Format Text
What is a HTT file?
Hypertext Template Format, identified by the HTT extension, is a System Files type and includes 251 files.
Microsoft, the developer of the Hypertext Template Format (HTT), has released file format and 242 programs designed to handle them.
HTT files are compatible with various operating systems, including Windows. There are 2 programs available to open a HTT file, including popular tools like Microsoft Windows and Adobe ExtendScript.
How to open a HTT file?
If you are having trouble opening a HTT file, it usually means the right software is not installed. Choose a program from the list that matches your operating system. Next, visit the official website of the developer, download the software, and install it on your device.
Microsoft Windows and Adobe ExtendScript are recognized as the most popular software solutions for dealing with HTT files. If you wish to install the latest release of Microsoft Windows, visit the official Microsoft portal and download the edition that works on any operating system.
Once Microsoft Windows is installed, the OS should configure it as the default tool for opening HTT files.
Set Microsoft Windows as the default HTT handler
Setting a default program by file type in Windows
- Right-click on your HTT file and choose the "Open With" option. Then click "Choose another app" to continue the process;
- In the pop-up window, find and select the Microsoft Windows application from the available options;
- Make sure the "Always use this app" checkbox is checked and click "OK" to confirm your choice as the default app for opening HTT files.
Choose an app to open a file on Mac
- Right click or use Control + left click on the desired HTT file to launch the file options menu;
- Select "Open in application" and click "Other";
- Towards the bottom of the window, find the "Enable" menu, which is already set to the default option, "Recommended Programs";
- In this menu, select "All Programs" and search for Microsoft Windows. Check the box next to "Always open in app" to make it the default option.
How to edit a HTT file?
Editing HTT files requires installing professional software that lets you open and edit system files. Online editors have more limitations compared to dedicated Hypertext Template Format programs.
List of Top HTT editors 2026
According to these factors, we have compiled a list of available HTT editors.
| HTT Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Adobe ExtendScript | Adobe | Windows | 4.2 out of 5 (35 reviews) |
Effective solutions for HTT file problems
If HTT files are giving you trouble, small modifications to your software can help. Check out the troubleshooting tips below to fix these issues.
What are the possible solutions to recover a corrupt HTT file?
Start a data recovery program and open the damaged HTT file. Go to the menu and select the "Repair" option to repair the file. Allow the recovery process to complete, which will automatically repair the damaged system files.
Are there any symptoms that my HTT file is damaged?
Corrupted HTT system files may show the following signs:
- Opening the file in Microsoft Windows or other programs causes them to hang or crash;
- Error dialogs are displayed when interacting with the file;
- Opening the file results in an error or a failed attempt;
- Unexpected expansion of the total size of the HTT file;
- Editing the archive in Adobe ExtendScript is accompanied by slow performance or delays;
What are the possible causes of Microsoft Windows crashing?
The absence of software updates can cause Microsoft Windows to crash. It is recommended to install the latest available updates for Microsoft products.
Restarting your computer can resolve numerous common problems, so it should be the initial step before changing any software-related settings.