SFF File Extension

SFF file icon

Structured Fax Format Image Format

What is a SFF file?

The SFF extension is related to Structured Fax Format Image Format and is classified in the Document Files category, which contains 969 files.

SFF files are compatible with various operating systems, including Linux, Windows and Mac OS. If you need to view a SFF file, you can use one of 3 programs, such as XnView, PMView Pro and Visendo Fax Server Express.

How to open a SFF file?

If you’re having difficulty opening a SFF 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.

XnView, PMView Pro and Visendo Fax Server Express are among the most widely used programs for handling SFF files. To set up the newest version of PMView Pro on your device, simply go to the official Blueprint website. There you can download the edition compatible with every operating system.

Once the process is complete, PMView Pro should take over as the default application for SFF files.

Make PMView Pro the default SFF viewer

Change the default app to open files on Mac

  1. Right click or use Control + Left Click on the desired SFF file to access a dropdown menu of actions;
  2. Choose "Open in Application" and click "Other";
  3. At the bottom of the window, you will find the "Enable" menu. Default, will be set to "Recommended Programs";
  4. Choose "All Programs" in this menu and search for PMView Pro. Check the box next to "Always open in app" to make it the default program.

Change default programs in Windows

  1. Start by right-clicking on your SFF file, then select "Open With" and continue by clicking "Choose another app" from the options provided;
  2. Inside the popup window, scroll through the list of applications and specifically choose PMView Pro as the application to associate with your SFF file;
  3. Check the "Always use this app" checkbox and click "OK".

Finding answers to SFF file problems

Rest assured, any issues with SFF files can typically be addressed with simple software adjustments. See the tips below for help.

What are the steps to repair a damaged SFF file?

Open the damaged SFF 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 document files.

What are the methods to detect if my SFF file has been corrupted?

The signs of corrupted SFF document files can manifest as:

  • Unexplained SFF file size inflation;
  • PMView Pro 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 Visendo Fax Server Express;

What are the reasons behind PMView Pro crash?

Insufficient software updates can contribute to PMView Pro crash. To avoid this, make sure that you have installed the latest updates for Blueprint 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.

How to edit a SFF file?

To modify SFF files, it is necessary to install dedicated software that lets you open and edit document files. Online SFF editors generally offer fewer tools compared to programs designed for Structured Fax Format Image Format.

Best SFF Editor Software in 2026

Based on the criteria above, here is a selection of SFF editors you can use.

SFF Editor SoftwareDeveloperPlatformsOverall Rating
Visendo Fax Server ExpressVisendo SRLWindows4.2 out of 5 (41 review)