STM File Extension
HTML Server Side Include Format
- File Type stm
- Developer Microsoft
- Popularity
- Application Adobe Dreamweaver
- Category Web Files, Developer Files, Document Files
What is a STM file?
HTML Server Side Include Format files, recognized by the STM extension, fall into the Web Files, Developer Files and Document Files categories, amounting to 2418 files.
The HTML Server Side Include Format (STM) was created by Microsoft, a company that developed file format and produced 242 programs for their use.
STM files are compatible with various operating systems, including Windows, Mac OS and Linux. If you need to open a STM file, you can use one of 12 programs, such as Adobe Dreamweaver, Sublime Text and Atom.
Programs that support STM files
Windows
Mac OS
How to open a STM file?
If you’re having difficulty opening a STM file, it is often due to not having the correct software. To solve the problem, choose a compatible program from the list. Then follow the link to the official developer site, download the software, and install it on your device.
Adobe Dreamweaver, Sublime Text and Atom are among the most widely used programs for handling STM files. To set up the newest version of Adobe Dreamweaver on your device, simply go to the official Adobe website. There you can download the edition compatible with every operating system.
Once the process is complete, Adobe Dreamweaver should take over as the default application for STM files.
Make Adobe Dreamweaver the default STM viewer
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired STM file to access a dropdown menu of actions;
- Choose "Open in Application" and click "Other";
- At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
- Choose "All Programs" in this menu and search for Adobe Dreamweaver. Check the box next to "Always open in app" to make it the default program.
Change default programs in Windows
- Start by right-clicking on your STM file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
- Inside the popup window, scroll through the list of applications and specifically choose Adobe Dreamweaver as the application to associate with your STM file;
- Check the "Always use this app" checkbox and click "OK".
How to edit a STM file?
To modify STM files, it is necessary to install dedicated software that lets you open and edit web files. Online STM editors generally offer fewer tools compared to programs designed for HTML Server Side Include Format.
Best STM Editor Software in 2026
Based on the criteria above, here is a selection of STM editors you can use.
| STM Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Sublime Text | Sublime HQ Pty | Windows, Mac OS, Linux | 4.8 out of 5 (42 reviews) |
| Adobe Contribute | Adobe | Windows | 4.6 out of 5 (45 reviews) |
| Atom | - | Windows, Mac OS, Linux | 4.3 out of 5 (39 reviews) |
| Adobe Dreamweaver | Adobe | Windows, Mac OS | 4.2 out of 5 (41 review) |
Convert files to and from STM
If you struggle with a STM file, consider converting it to alternative formats such as CSV or other similar file types.
It is important to understand that converting a STM file might limit certain functions, but this conversion is usually reversible.
Convert STM to other file formats
Finding answers to STM file problems
Rest assured, any issues with STM files can typically be addressed with simple software adjustments. See the tips below for help.
What are the steps to repair a damaged STM file?
Open the damaged STM file in a recovery program and select the "Repair" menu item to start the repair operation. Allow the recovery process to complete, which will automatically repair the damaged web files.
What are the methods to detect if my STM file has been corrupted?
The signs of corrupted STM web files can manifest as:
- Unexplained STM file size inflation;
- Adobe Dreamweaver or other programs stop responding or crash when trying to handle the file;
- When opening the file, errors occur or the inability to access its contents;
- While working with the file, error alerts are encountered;
- The file shows slow performance when edited in Adobe Dreamweaver;
What are the reasons behind Adobe Dreamweaver crash?
Insufficient software updates can contribute to Adobe Dreamweaver crash. To avoid this, make sure that you have installed the latest updates for Adobe products.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.