What is MF File and How to Open MF Files on Windows and Mac

Last Updated on November 25, 2021 by Peter Wood

When you download some files from the Internet with the MF file extension, do you know how do you open and view the file? What should be the best MF viewers to open the files? To search for a program online, you can take the article for reference. There are a large number of file formats with different extensions. Generally speaking, you can double-click on it. And the operating system will open the MF file with the proper program. Of course, you can also take the 3 methods to view and browse your MF files.

How to Open MF Files

Part 1: What is MF File

FM is the file extension of Adobe FrameMaker. It is a technical writer for desktop publishing projects to make technical writing and documentation projects. When you save an Adobe FrameMaker project, it will assign with an FM file extension.

In addition to FrameMaker, several applications can produce MF file extensions. Java, for example, uses an MF file to store Java Manifest Files, which include the information about a Java file archive. Metafont typesetting programs also use MF files to save text files.

Part 2: 3 Best Methods to Open MF Files

What should be the best methods to view an MF file on your Windows and Mac? Instead of searching the desired program, you can use the following method to choose the appropriate software installed. If you receive the error message saying Windows couldn’t open this file if the MF files association does not set correctly.

Adobe FrameMaker. It is a powerful authoring and publishing solution for technical communicators. With it, you can write, review and publish engaging technical documentation and structured content. The subscription is $29.99 per month, while The full license is $999.00. And the upload is $399.00.

Adobe FrameMaker

Java Manifest. Java is a program language. In order to view the FM files, you should learn more about the basic codec. Just download the software and add the program to open the desired files.

Java Manifest

Metafont. It is a program to make bitmap fonts for viewers, printer drivers, and more.

Step 1: To get the right program for your MF file, right-click on the program, select the Properties option and then look under Type of File. On Mac, right-click on the file, select the More Info option and check file type under the Kind option.

Step 2: Install the right program to open the MF file and then change file associations. Right-click on an MF file and select the Open With option. On the popup dialog, select the program. Make sure to check the box next to Always use the selected program to open this kind of file or relative option.

Part 3: More Tips to Browse MF Files

Before opening MF files on your computer, you should copy the MF file to avoid any damage. You’d better check them with an antivirus scanner. If none of the software on your computer can open MF files, do not change the file extension directly. That may lead to the corruption of your files. If you have already changed the MF file extension, revert it to MF by renaming the file. Other reasons why MF files cannot open:

1. Improper association software. There are a few programs that can generate and open different types of MF files. If you use the wrong program, it cannot open your MF files.

2. Outdated software. Unable to open MF files with the associated software or see an error? Try updating the software to the latest version.

3. Incomplete installation. Make sure that you have installed and registry the associated software correctly. Otherwise, it cannot open your MF files.

4. MF files are corrupt. Several factors can make your MF files corrupted. Malware infection, for example, can lead to MF file corruption.

Recommend: Best Image Viewer: WidsMob View Pro

What should be the best media viewer to browse different photos and videos with ease? WidsMob View Pro is the MF viewer alternative to view media files within different modes, such as full screen, thumbnail, EXIF, and slideshow with ease. Moreover, it enables you to edit the photos, convert the files and apply filters within clicks.

1. Support photo and video files, such as RAW, HEIC, JPEG, Video formats.

2. Provide extensive viewing modes, such as slideshow, EXIF, thumbnail, etc.

3. Multiple editing features rotate, crop, resize and edit your images in batch.

4. Batch process multiple media files with multi-thread within a few clicks.

Win Download Mac Download

How to Open Image and Video Files on Computer

Step 1: Download and install image viewer. You can launch the program on your computer. After that, you can drag and drop your image and video files into the program. Moreover, you can also double-click any file to open the whole folder.

View Media by Folder Viewer Pro

Step 2: View images as a thumbnail. Go to the album under Library. And your photos will show up on the right side as thumbnails. Adjust the thumbnail size with the slider at the bottom.

Browse images on full screen. You can go to View > Enter Full Screen to load the selected photos in full screen.

If it is not convenient to browse your images manually, you can also click View > Slideshow to enter the slideshow mode. Then your photos will display one by one automatically.

Full Screen View

Step 3: If you want to share an image to social media, click the Share icon at the bottom right side, and select the platform, such as Facebook, Twitter, etc. Then follow the onscreen instruction to complete image sharing. To send a specific photo to your friend, go to the Share menu and select Email or Message to send it.

Share Photo Viewer Pro

Note: The photo viewer can adjust the image size and other parameters based on the target channel. If you send multiple high-quality photos via email, the application will compress them.


You should understand what an MF file is, how to open MF files and why you cannot open them. As a rare file extension, MF is by Adobe FrameMaker. You can open your files in the software and convert them to commonly used file formats. If you still need a powerful image viewer for your computer, you can choose WidsMob View Pro. It is the desired media viewer to open both images and videos with ease.