File Extension ACF

  • Full name
    Microsoft Agent HTTP Character Format
  • Developer
  • Popularity
Have you encountered a problem with a ACF file? Don’t you know which program opens a file with this extension? You will find all the information you need about working with a ACF file here. In the further part of this page we have added a list of programs that should open your ACF file. It is enough you choose a proper application for your operating system, download and install it.


ACF files are so-called Adobe Photoshop Custom Filter files, so filter files for the image editing software Adobe Photoshop. When calling the Custom Filter via 'Filter-> Other Filter-> own filter', a matrix appears in which one can enter values for so-called weightings for scaling and offset.

Using this matrix and the underlying mathematical functions, you can achieve many different effects, such as emboss, invert, or sharpen. If you have created a usable value matrix, you can also save it. The created ACF file can later be reloaded or used for batch processing.

Programs which can open a ACF file

How to open a ACF file? Advice and guidance

Absolutely most often appearing reason that prevents you from opening the ACF file is the lack of a proper application to support it in your operating system. It is notably the first thing you need to address. When one of the programs to support a ACF file from the list is already installed, you can try to rerun the file. The system should display a message asking you to choose a primary application to support ACF files. At this point we are looking for disk space where the application was installed in and we can link it with a ACF file. Since then, our operating system will use the selected program to support all ACF files.

Other issues

Despite the described problem with ACF there may be many more problems. If the existing operations were not effective, get involved with the following matters:

- verify that the ACF file is not damaged and that it has been downloaded or copied in whole
- verify that the file has a file extension that has not been intentionally changed (for example, if it do not contain other information than its extension suggests)
- make sure again whether the ACF file type is linked in the operating system with a proper program
- make sure that the file is not infected with a virus and you have up to date software and drivers.

Similar extensions