What is an MTX file?
An .MTX file is a data file. It serves multiple purposes depending on the software that created it. The most common use is the Matrix Market exchange format. The NIST developed this format to store sparse matrix data for mathematics and scientific computing. Researchers often load these files into MATLAB or Python.
Other common uses include computer-based exams created by MyTestX, XML configuration data for Siemens NX CAD software, and game texture atlases for mobile games. Historically, the .MTX extension also represents a MetaStream Scene File created by Viewpoint for 3D web graphics. It is also used for transportation planning matrix files by PTV Group Visum and Citilabs CUBE Voyager.
How to open MTX files?
Because .MTX has multiple possible meanings, it is difficult to know which software to use. You can open a Matrix Market file with any standard text editor or math software like MATLAB. If the file is an exam, you need the MyTestX software. If it is an XML file from Siemens NX, a code editor will display the text.
If you do not know the origin of your file, viewer.online/mtx analyzes .MTX files to identify their exact format and creator software, shows which programs can open the file, and usually previews it.
File Conversion
We recommend file conversion to sensible target formats on convert.guru. You can convert text-based .MTX matrices to .CSV or .TXT. If your .MTX file is a game texture, you can often convert it to .PNG or .JPG.
Summary
viewer.online/mtx directly opens and previews .MTX files in the browser, eliminating the need to install software or troubleshoot compatibility issues.