XPM to MAT Converter
Processing entirely on your device — large files may take a moment.
Convert MAT image arrays to PNG for reports and previews. If your files are still in XPM format, this page is the shortcut: XPM (X11 Pixmap) is an image written as C source code — plain ASCII text that compilers and editors ingest directly, the classic icon format of Linux desktops and legacy X11 apps.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How XPM compares to MAT
| XPM | MAT | |
|---|---|---|
| Compression | None (ASCII text) | None / zlib level 9 |
| Transparency | Single transparent color | Not supported |
| Animation | Not supported | Not supported |
| Metadata | Not supported | Variable names and workspace metadata |
| Best for | Linux icons, X11 themes | Simulation frames, sensor arrays |
How to convert XPM to MAT
- 1
Select your files
Drag & drop your XPM files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to MAT". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted MAT file individually, or grab everything at once as a ZIP archive.
About the XPM format
XPM (X11 Pixmap) is an image format that is literally C source code: pixels are listed as character-to-color mappings inside an ASCII array. Compilers, text editors and version control all treat it as plain text, which is why Linux desktop icons and legacy X11 application assets have used it for decades.
XPM is limited to 256 colors per image and stores no alpha beyond a designated transparent character, so it is a niche target: mainly icon themes, window-manager decorations and retro programming projects.
+Strengths
- ✓Plain text — diffs and greps
- ✓Compiles straight into C programs
- ✓Tiny for small flat icons
!Limitations
- −256 colors maximum
- −Poor alpha (one transparent color)
About the MAT format
MAT is the workspace format of MATLAB and its open-source sibling Octave. Image data shows up inside MAT files as numeric arrays — simulation frames, sensor captures, processed microscopy — usually alongside the variables and metadata a research script produced with them.
Converting the image arrays inside a MAT file to PNG makes them viewable and shareable without MATLAB — useful for reports, papers and collaborations where colleagues do not have a MATLAB license.
+Strengths
- ✓Carries numeric precision end to end
- ✓Pairs image data with research variables
- ✓Octave compatibility (open tooling)
!Limitations
- −Requires MATLAB/Octave to open
- −Not an image container by design
Why convert XPM to MAT?
There is a concrete reason this conversion exists: 256 colors maximum MAT sidesteps that — Carries numeric precision end to end If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this XPM to MAT converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Will I lose quality converting XPM to MAT?
No — MAT is a lossless format, so every pixel of the converted image matches your original XPM file. You can also adjust the quality/size balance before converting when the target format supports compression.
Can I convert several XPM files at once?
Yes — drop as many files as you like into the tool and they are converted in one batch. When more than one file comes out, everything is bundled into a ZIP for a single download.
Will transparent areas survive the conversion to MAT?
Transparency is kept whenever MAT actually supports an alpha channel. If the target format has none (like JPG), transparent areas are flattened onto a white background — that is a property of the format, not of this tool.