ATR file - How do I open a .atr file?
The table below provides useful information about the .atr file extension. It answers questions such as:
- What is the .atr file?
- What program do I need to open a .atr file?
- How can the .atr file be opened, edited or printed?
- How can I convert .atr files to another format?
Table of Contents
We hope you find this page helpful and a valuable resource!
5 extension(s) and 0 alias(es) found in database
✅ SIO2PC Atari Disk Image

The ATR file is an SIO2PC Atari Disk Image. SIO2PC is a hardware interface and software utility package to allow storage of your Atari files on your PC's hard and floppy disks, file conversions in both directions, and Atari printer output redirection to your PC's printer, screen, or file.
✅ Lightscape Material File

The ATR file is a Lightscape Material File. Autodesk Lightscape is a visualization application that uses radiosity and ray tracing to create accurate lighting for 3D models.
✅ PhysioBank Annotation File

The ATR file is a PhysioBank Annotation File. PhysioBank is a large and growing archive of well-characterized digital recordings of physiologic signals and related data for use by the biomedical research community.
✅ ZX Spectrum Attributes Image

The ATR file is a ZX Spectrum Attributes Image. The ZX Spectrum is a home computer created by Sinclair Research Ltd in U.K. in 1982.
✅ MicroSim PCBoard Attributes Report

The ATR file is a MicroSim PCBoard Attributes Report. MicroSim PCBoard is a printed circuit board (PCB) layout tool.
Other types of files may also use the .atr file extension.
🚫 The .atr file extension is often given incorrectly!
According to the searches on our site, these misspellings were the most common in the past year:
Is it possible that the filename extension is misspelled?
We found the following similar file extensions in our database:
🔴 Can't open a .atr file?
When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:
Windows cannot open this file:
example.atr
To open this file, Windows needs to know what program you want to use to open it...
If you don't know how to set the .atr file association, check the FAQ.
🔴 Can I change the extension of files?
Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.
If you have helpful information about the .atr file extension, write to us!