Opening an ACT File

The ACT file type is primarily associated with Photoshop.

ACT	File extension: ACT
	File type:	color table

What is an ACT file?

ACT files mostly belong to Photoshop by Adobe. ACT files usually contain color lookup tables used by Adobe design products such as Photoshop and Illustrator. A color table is a collection of predefined colors used to optimize images published to the web. In keeping with web standards, these ACT files only contain 256 (RGB) colors, thus significantly reducing the size of an image. ACT is also the filename extension of audio recordings captured with handheld MP3 players and voice recorders. Such ACT files are compressed using Adaptive Differential Pulse Code Modulation (ADPCM). Animation:Master 3D picture manipulation and animation software, saves animations in ACT files. Almacam Space Cut 3D cutting machine programming software stores CAD/CAM data and, cutting/welding instructions in ACT files. Stronghold building simulation and real-time strategy video game uses ACT files to store campaign maps. Genesis3D 3D rendering environment saves 3D actor data in ACT files. An actor contains motion data, an object, materials, and skins.

How to open an ACT file

You need a suitable software like Photoshop to open an ACT file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your ACT file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a ACT file directly in the browser:. Just drag the file onto this browser window and drop it.

Online ACT File Viewer

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Easily convert ACT files to JPG, PDF, HTML, DOC, ...

If you want to convert or edit an ACT file, you can use our free Online ACT File Converter (powered by Convert.Guru):

Just click the "Choose your .act file to play" button on this page.
After your file is opened in browser,
click "Save as..." in the menu.
Then click the file format (e.g. PDF, JPG, DOCX, TXT, ...) you want.
Your file will be converted and downloaded.

Programs that open and convert ACT files:

Photoshop by Adobe
See the previous paragraphs to learn more about the main application. ACT files are often referred to as Photoshop settings because this type of file is primarily created or used by this software.
Action! (presentation) by Adobe
Action! is a discontinued Windows-based program for authoring and presenting animated graphics. Presentations created with Action! are saved in ACT files. This file format is classified as Data.
Almacam Space Cut (CAD/CAM data and cutting instructions) by Alma
Almacam Space Cut is a 3D computer aided design and computer aided manufacturing software for 5-axis 3D cutting machines and robots. It saves CAD data and cutting/welding instructions in ACT files. This file format is classified as CAD.
Animation:Master (animation) by Hash
Animation:Master is a computer program used to create 3D images and animation. It saves animations in ACT files. This file format is classified as 3D Image.
Audacity (voice recording) by The Audacity Team
Audacity is a free and open source program used for audio playback, recording, and editing. You can play, edit, and/or convert ACT voice recordings using this program. This file format is classified as Audio.
Dragon Nest (game character skill) by SEA
Dragon Nest is a fantasy massively multiplayer online role-playing video for Windows. The skills of game characters in Dragon Nest are saved in ACT files. This file format is classified as Game. Related links: Dragon Nest Game Skill Reference
Experimenter's WorkBench (psychological data) by DataWave
Experimenter's WorkBench is an obsolete program that was used to automate virtual experiments. Psychological data used by this program was saved in ACT files. This file format is classified as Data.
Genesis3D (actor) by Genesis3D Community
Genesis3D is an open source engine for developing and rendering games in Qt, JavaScript, and C++. It saves actors used in video games in ACT files. An actor contains objects, materials, skins, and motion data. This file format is classified as 3D Image.
Office (actor) by Microsoft
Office is a cross-platform office productivity software suite. The Office Assistant component in classic versions of the program displays interactive help messages. Animated characters attached to these help messages are saved in ACT files. This file format is classified as Raster Image.
Stronghold (campaign map) by Firefly
Stronghold is a series of real-time strategy video games for Windows and MacOS desktop operating system. Campaign maps used by Stronghold are saved in ACT files. This file format is classified as Game.
Train Simulator (activity) by Microsoft
Train Simulator is a train simulation video game for Windows. Train activity data used by Train Simulator, are saved in a Unicode text file that has ACT filename extension. This file format is classified as Game.
Visual Foxpro (action diagram) by Microsoft
Visual FoxPro is a discontinued relational database management system and programming language. Action diagrams created by its documenting wizard are saved in ACT files. This file format is classified as Developer.

ACT file format:

The file format determines how the data is stored in the file. The initial characters of a file are called signature, sometimes also referred to as "magic bytes". The signature can be used to infer the file format. However, different programs can use the same file extension. Furthermore, a file extension can be renamed incorrectly and double-clicking on it will then display an error when it is opened. So you need a detailed analysis of a file to find out the format and the associated program. Our analysis of the ACT files produces the following result:

The ACT extension is quite commonly used. The file itself covers a large number of different file formats. The following file formats are most commonly found in ACT files:

10% of all ACT files start with the bytes Eternity Action File crucial for this file format. The contents of these files cannot be read by a human; only a computer program can interpret the data. A typical file size is 220 KB. The file type is relatively new. The files contain the following words: Eternity Action File, Skill and Stand. The following filename is common: warrior_skill_2st_moonlord.act. Files like these are sometimes connected to skill, warrior, cleric, moonlord, drop, swordmaster, inquisitor, gladiator, soceress, lencea and slayer.
10% of all ACT files are based on the well-known RIFF file format. RIFF files store data in tagged chunks. There are primarily used to store multimedia such as sound and video. They consist of illegible, cryptic characters. The average file size is 50 KB with most files being between 3 KB and 1 MB in size. The keywords WAVEfmt, data and RIFF are typical for these files. The following filename is common: REC001.ACT or REC002.ACT.

The remaining 80% of all ACT files are different files with different signatures, frequently e.g. DOC, ZIP, EXE, XML and GVAS. Often described as modis, color, palette, handy, table or dentist. Just click the "Choose your .act file to play" button on this page to find out what your ACT file is.

Technical Data for ACT File Extension

File classification:

Settings

Related files:

actt, actsave, cns, actbin, actstr, acts, atc, act3d, sff, rar, exe, spr, zip, action, ptc, skn, eff, ani, aq, def, ct, psb, ahs

Mime type:

text/plain, application/octet-stream

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: ACTStdPrjFile, FileType: ACT Project, AppName: Application Center Test

ProgramID: ACTStdPrjFile
EXEFile: %ProgramFiles%\Microsoft ACT\act.exe %1

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Adobe Photoshop CS\Photoshop.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop 5.0 LE\Photosle.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop 5.5\Photoshp.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop 6.0.1 CE\Photoshp.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop 6.0\Photoshp.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop 7.0\Photoshop.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop CS\Photoshop.ex

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop CS\Photoshop.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop Elements

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop Elements 2\Photoshopelements.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop Elements\PhotoshopElements.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Photoshop Elements 2\Photoshopelements.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop 5.0\Photoshp.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\adobe\photoshop cs\photoshop.exe does not exist.

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Photoshop7\Photoshop.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop Elements 3.0\PhotoshopelementsEditor.exe

ProgramID: Practica File
EXEFile: %ProgramFiles%\Practica Musica Folder\Practica Musica.exe%1

ProgramID: actfile
EXEFile: %ProgramFiles%\NCH Swift Sound\WavePad\wavepad.exe %L

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%r\Adobe\Photoshop 7.0\Photoshop.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop Elements 4.0\PhotoshopelementsEditor.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop 7.0\ImageReady.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop Elements 5.0\PhotoshopelementsEditor.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Adobe\Photoshop\Photoshop.exe

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\PhootoshopCS\Adobe Photoshop CS3\Photoshop.exe

ProgramID: stormplayer.act
EXEFile: %ProgramFiles%\StormII\Storm.exe /play

ProgramID: Photoshop.ColorTableFile
EXEFile: %ProgramFiles%\Photoshop Elements\Photoshopelements.exe

Show all 28 listings To Top

an act color table is a special file format by Adobe and should only be edited and saved with the appropriate software.

How to solve problems with ACT files

Associate the ACT file extension with the correct application.
Update your software that should actually open color tables. Because only the current version supports the latest ACT file format. Search, therefore, e.g. on the Adobe manufacturer website after an available Photoshop update.
To make sure that your ACT file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .ACT file online - secure, fast, and no downloads needed.