APT File - opening and understanding

Did your computer fail to open an APT file? We explain what they are used for and recommend software that we know can open or otherwise handle your .APT files.

What is an APT file?

An .APT file is an Adaptive Prediction Tree Encoded Bitmap file. When an image needs compression to save space, one process used is APT. The files created in the process are called .apt files. APT stands for Adaptive Prediction Tree. There are two types of image compressions for .apt files: A lossless image is a compressed image with no data from the original image discarded, and a lossy image is a compressed image with data from the original image discarded. The image quality is the same as the original for lossless compression, where lossy compression sacrifices image quality for improved space savings.

John Robinson, a researcher who focuses on image processing and analysis, developed the APT compression method.

How to open APT files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension APT for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 10 different APT openers which you will find listed below.

Other file formats using extension .APT

While Adaptive Prediction Tree Encoded Bitmap is a popular type of APT-file, we know of 3 different uses of the .APT extension.

The APT file extension indicates to your device which app can open the file. However, different apps may use the same file extension for different types of data. So an APT opener may not be able to open all kinds of APT files. In this case, look through all formats to make sure you find the best suited APT viewer.

Android PandaHome Theme

A .apt file is a theme file created by the Android PandaHome. PandaHome is an Android-based application used to change themes. A theme pertains to the appearance of your Android device's look. PandaHome changes font styles, icons, wallpapers, etc that are included in the theme.

While we have not verified the apps ourselves yet, our users have suggested 10 different APT openers which you will find listed below.

Team Developer / SQLWindows application

Through our analysis of APT files, we know that one use of the format is Team Developer / SQLWindows application . We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

While we have not verified the apps ourselves yet, our users have suggested 10 different APT openers which you will find listed below.

Various viewers for this file format

These apps are known to open certain types of APT files. Remember, different programs may use APT files for different purposes, so you may need to try out a few of them to be able to open your specific file.

CommandCenterCommandCenterUser submitted
ACDSee Photo EditorACDSee Photo EditorUser submitted
Altium DesignerAltium DesignerUser submitted
AutoPlay Media StudioAutoPlay Media StudioUser submitted
ECAD dioECAD dioUser submitted
Aspen PlusAspen PlusUser submitted
Altium Designer SummerAltium Designer SummerUser submitted
Price-SurferPrice-SurferUser submitted
Altium Designer Summer ViewerAltium Designer Summer ViewerUser submitted
IBM Lotus ApproachIBM Lotus ApproachUser submitted
We have not verified any software that we know for certain will work with APT-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with APT-files. If you know one, please use the 'Suggest a program' link below and tell us about it!