What is an XPM file?
The .XPM (X PixMap) format is a text-based image file format. It was originally created for the X Window System. Unlike standard binary images, .XPM files store image data as plain text formatted as a C programming character array. This allows developers to insert the image directly into C and C++ source code.
Because the format is simple and open, scientific software like GROMACS frequently uses .XPM files to plot 2D data matrices. Other programs also use the .XPM extension for completely different purposes. For example, Akai MPC software uses it for XML-based program files, and Bruker spectroscopy software uses it for parameter files.
Because .XPM has multiple possible meanings, we recommend viewer.online/xpm to identify the actual format of your file. viewer.online/xpm analyzes .XPM files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
How to open XPM files?
You can open standard .XPM images with graphic editors like GIMP or image viewers like IrfanView. Command-line tools like ImageMagick can also display and process them. Because the files contain readable characters, you can open them in any text editor, such as Notepad++ or Visual Studio Code.
Best practices and troubleshooting
If you need to share an .XPM image online or use it in standard documents, you should convert it to a modern format like .PNG or .JPG. You can perform this conversion easily on convert.guru.
If your file does not open as an image, open it in a text editor. This allows you to read the header and check if it is an Akai XML file or a Bruker data file instead.
Summary
viewer.online/xpm directly opens and previews .XPM files in the browser, eliminating the need to install software or troubleshoot compatibility issues.