MHT File Extension
MHTML Web Archive
- File Type mht
- Popularity
- Application Adobe Dreamweaver
- Category Web Files
- Format Text and Binary
What is a MHT file?
The MHT file extension is linked to MHTML Web Archive and belongs to the Web Files category, which includes 283 files.
MHT files are compatible with various operating systems, including Windows, Mac OS and Linux. To open a MHT file, you can choose from 9 programs such as Adobe Dreamweaver, Microsoft Edge and Firefox.
MIME types
- multipart/related
- message/rfc822
File Signature
HEX code: 46 72 6F 6D 3A 20 3C. ASCII code: From:.
Programs that support MHT files
How to open a MHT file?
If you cannot open a MHT file, it is most often due to missing software. Select a program from the list according to your operating system. Then go to the official website of the program developer, download it, and install it on your device.
Adobe Dreamweaver, Microsoft Edge and Firefox are recognized as the most popular software solutions for dealing with MHT 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 installed, Adobe Dreamweaver will be set as the default program, and MHT files will open automatically.
Set Adobe Dreamweaver to open MHT by default
Setting a default program by file type in Windows
- Right click on your MHT file, then select "Open with" and click "Choose another application";
- Find the Adobe Dreamweaver application in the pop-up window and select it as your preferred program;
- Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening MHT files.
Change default apps on Mac
- Right-click or use Control + Left-click on the desired MHT file to access the file’s context menu;
- Select "Open in application" and click "Other";
- At the bottom of the window, find the "Enable" menu, where "Recommended Programs" is already selected by default;
- Within this menu, select "All Programs" and then locate Adobe Dreamweaver. Check the box next to "Always open in app" to set it as the default program.
How to edit a MHT file?
Editing MHT files requires installing professional software that lets you open and edit web files. Online editors have more limitations compared to dedicated MHTML Web Archive programs.
Best MHT editors in 2026
Considering the mentioned criteria, we have compiled a list of MHT editors that may suit your needs.
| MHT Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Adobe Dreamweaver | Adobe | Windows, Mac OS | 4.2 out of 5 (41 review) |
Convert to and from MHT
If you struggle with a MHT file, consider converting it to alternative formats such as PDF, RTF or other similar file types.
Converting a MHT file may not fully retain all functionality, but it is generally possible to return it to the original format.
Convert MHT to other file formats
Easy MHT Troubleshooting
Certain problems with MHT files can be conveniently fixed with small software tweaks. Here are some helpful tips to address them.
What are the steps to repair a damaged MHT file?
Open the corrupted MHT file in a recovery program and select the "Repair" menu item. Please be patient while the recovery process completes, which will automatically restore the damaged web files.
How do I know if my MHT file is corrupted?
Corrupted MHT web files may show the following signs:
- Attempts to open the file result in errors or failed results;
- Editing the archive in Adobe Dreamweaver is accompanied by slow performance or delays;
- The file causes Adobe Dreamweaver or other programs to hang or crash during operation;
- Unexplained increase in MHT file size;
- Error messages appear while working with the file;
What are the reasons behind Adobe Dreamweaver crash?
The likely cause of Adobe Dreamweaver crashing is lack of software updates. Install the latest updates available for Adobe products.
Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.