File Extension Database

Open ACF File

ACF extension files can acquire different formats depending on the application that creates them, some of which you will see below:

Steam Application

In this space, an ACF extension file is a cache file used by Valve Steam, a software package used for downloading games.

Actually, Valve Steam is a digital video game distribution platform developed by Valve Corporation.

The ACF file saves information related to the downloaded software and is used for the original download as well as game updates.

ACF files are used by newer versions of the Steam content delivery system.

Basically the ACF file replaced the older versions, with extension GCF and NCF.

X-Plane Aircraft Simulator

In this case, the ACF file is an airplane file used by X-Plane, a realistic flight simulator for pilots and sim hobbyists.

X-Plane is a flight simulator produced by Laminar Research with a desktop version that is available for macOS, Microsoft Windows, and Linux, while a mobile version is available for Android, iOS, and webOS.

The ACF file contains data describing aircraft properties such as engine power, flight physics, mass properties, and limits.

You can create an ACF file using Plane-Maker, which is a utility that comes with X-Plane, it does not allow you to create a 3D model, it only works to determine the layout of the plane's shapes and basic aerodynamic properties.

You can also use the AC3D application with the X-Plane plugin to create a 3D model in the X-Plane OBJ format.

The ACF file contained aircraft data in binary format, until X-Plane version 10, now it contains data in text format.

Microsoft Agent

In this particular case, the ACF file is a data file that describes a character created for Microsoft Agent, an interactive animation program.

Microsoft Agent is a technology with which you add animated characters to facilitate the user's interaction with the computer.

These types of characters replace the configuration wizards, for example, or rather transform them into animated characters that ask the user questions and give the different guidelines they have to follow.

The ACF contains character data that can be uploaded via the HTTP protocol.

The ACF is saved along with the corresponding ACA file, which contains animation data for the character.

Microsoft Agent technology has been discontinued since the release of Windows 7.

Adobe Photoshop

In the latter case, the ACF file is a revolution kernel file created by Adobe Photoshop, an image-editing program.

Photoshop is an image editing software package and suite developed by Adobe Systems for Windows and Mac OS devices.

This is Adobe's star tool, compatible with Windows and macOS, which has been incorporating improvements over the years to become the most complete photo retouching tool, and the favorite of professionals in the sector.

The ACF contains an NxN kernel matrix of values used to manipulate the neighboring pixels surrounding a given pixel, to dim, sharpen, emboss, or perform other raster graphics operations on an image.

It can also contain positive and negative values, as well as mathematical expressions.

One of the advantages of an ACF file is that once the matrices are saved, they can be applied repeatedly to the images.

Software to open and work with an ACF file

Typical ACF application file locations:

"C:\Program Files\Adobe\Adobe Photoshop CS4 (64 Bit)\Photoshop.exe" "%1"

Frequently used application names to open ACF files:

Adobe - Adobe Photoshop CS4 (64 Bit)

Frequently associated Windows objects:

Agent.Character.2
Photoshop.CustomFilterKernel

How Can I Open ACF File on Windows

We researched and learned that the best way to open ACF file is to find a ACF file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a ACF file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open ACF file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as ACF file opener then try to search online for "ACF viewer", "application to open ACF file" or "open ACF file" queries in the search engine you like.
Install the application you found and check if it can open ACF file

How Can I Open ACF File on Mac OS

We recommend to find a ACF file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a ACF file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with ACF file.
If you know the Mac OS application which can work as ACF file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open ACF file in it.
If you don't know the application which can open ACF file then try to search for "ACF viewer", "application to open ACF file" or "read ACF file" queries in the online search engine you like.
Install the application you found and check if it can read ACF file

How Can I Open ACF File on Android

If you downloaded a ACF file on Android device you can open it by following steps below:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded ACF file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "ACF".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "ACF viewer", "ACF file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open ACF File on iPhone or iPad

To open ACF File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the ACF file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "ACF". This way you can find apps which can open ACF files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "ACF viewer" or "ACF file" online in your favorite search engine.

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