File Extension Library

.ACF File Extension

  • Developer by: Valve
  • Category: Game Files
  • Format: Binary

What is an .ACF file?

.ACF file extension is created by Valve. .ACF has been classified as Game Files. The format of .ACF file is Binary.

.ACF is Steam Application Cache File

An ACF file is a cache file used by Valve Steam, a software package used for downloading games. It 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. Older versions use .GCF and .NCF files.

List of all softwares that can open the Steam Application Cache File
Valve Steam
Valve Steam
File Type 2 X-Plane Aircraft File
Developer by: Laminar Research Category: Data Files Format: Text

Aircraft file used by X-Plane, a realistic flight simulator for pilots and simulator hobbyists; contains data that describes the properties of the aircraft, 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. However, Plane-Maker does not enable you to create a 3D model, it is only used to determine the layout of basic aerodynamic shapes and properties of the aircraft. You can use the AC3D application with the X-Plane plugin to create a 3D model in the X-Plane OBJ format.

NOTE: Before version 10 of X-Plane, the ACF file contained aircraft data in binary format. It now contains data in text format.

List of all softwares that can open the X-Plane Aircraft File
File Type 3 Agent Character Data File
Developer by: Microsoft Category: Data Files

Data file that describes a character created for Microsoft Agent, an interactive animation program; contains character data that can be loaded over the HTTP (or Web) protocol; saved along with a corresponding .ACA file, which contains animation data for the character.

NOTE: Microsoft Agent has been discontinued with the release of Windows 7.

List of all softwares that can open the Agent Character Data File
Microsoft Agent
Microsoft Agent Character Editor
File Type 4 Adobe Photoshop Custom Filter File
Developer by: Adobe Systems Category: Settings Files Format: Binary

Convolution kernel file created by Adobe Photoshop, an image-editing program; contains a NxN kernel matrix of values used to manipulate the neighboring pixels surrounding a given pixel; can contain positive and negative values as well as mathematical expressions.

Convolution kernel matrixes can be used for blurring, sharpening, embossing, or performing other raster graphic operations to an image; once saved in an ACF file, they can be repeatedly applied to images.

List of all softwares that can open the Adobe Photoshop Custom Filter File
Adobe Photoshop CC 2019
Adobe Photoshop CC 2019

How to Open .ACF file on different platforms

Open .ACF File on Windows

  • Right-click a .ACF
  • Left-click "Open With" > "Choose another app"
  • Select the program that opens .ACF file and Select check box "Always use this app to open .ACF files" Press "Ok"

Open .ACF File on Mac

  • Right-click (or Ctrl + Left-click) the .ACF file
  • Click "Open With" > "Other.."
  • Then choose another program from the app list and press "Open"
  • Select check box "Turn on" for "Always open in app"

Open .ACF File on Linux

Right click on the .ACF file, choose "Open with" and select a program from the list above

Open .ACF File on iPhone

Select a file. If you don't see an application to open the .ACF file, tap "Share" and choose the right app.
Method 2
Save the file. Then open the app «Files». Touch and hold the file, then release your finger. You will see a black menu bar. After that tap "Share" and select an application.

Open .ACF File on Android

Tap the Settings icon on an Android smartphone, then select «Applications». Click the Settings icon in the upper right corner of the screen, to change the default apps.
If you want to open, edit, save or even convert .ACF files on Android, then your best bet is to download one of the dedicated apps available on Google Play.

How to fix problems with .ACF files

  1. You need to update the application that you normally use to open .ACF files. Only the latest version of the software supports the current .ACF file format
  2. You need to check the .ACF file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)