Having problems opening an ACT file?

We have programs that can open or convert your ACT files.

Opening ACT files

Did your computer fail to open an ACT file? We explain what ACT files are and recommend software that we know can open or convert your ACT files.

What is an ACT file?

Files that contain the .act file extension are most commonly associated with audio files that have been recorded by a variety of voice recording devices players. These ACT files are compressed using Adaptive Differential Pulse Code Modulation. The ACT files can then be converted to the MP3 file format for playback on MP3 audio players.

The .act file extension is also commonly used for Adobe color table files. The Adobe Photoshop application uses color look-up tables to store a collection of pre-defined colors that are used by the software. These ACT files are used to add or reduce the number of colors in the application's CLUT file.

Software that will open, convert or fix ACT files

Try a universal file viewer

Try a universal file viewer like Free File Viewer. It can open over 200 different types of files - and most likely yours too. Download Free File Viewer here.

About File Extension ACT

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the ACT file format or software that uses files with the ACT suffix, please do get in touch - we would love hearing from you.

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