JPT to XPM Converter
Processing entirely on your device — large files may take a moment.
Convert PNG or SVG output to XPM to feed icon themes and legacy toolkits. If your files are still in JPT format, this page is the shortcut: JPT is the JPP-stream profile of JPEG 2000 — same wavelet family, used mainly in broadcast archives.
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 JPT compares to XPM
| JPT | XPM | |
|---|---|---|
| Compression | Wavelet (lossy + lossless) | None (ASCII text) |
| Transparency | Supported | Single transparent color |
| Animation | Not supported (MJ2 is separate) | Not supported |
| Metadata | XML boxes (EXIF/GPS) | Not supported |
| Best for | Archives, medical, cinema | Linux icons, X11 themes |
How to convert JPT to XPM
- 1
Select your files
Drag & drop your JPT 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 XPM". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted XPM file individually, or grab everything at once as a ZIP archive.
About the JPT format
JPEG 2000 (JP2) replaced JPG's DCT blocks with wavelet transforms: at the same bitrate it shows fewer blocky artifacts, and its lossless mode compresses better than JPG ever could. It was the format of early digital cinema and remains common in archives, medical systems and geospatial pipelines.
Browser support never arrived — Chrome, Firefox and Safari all skip it — so a JP2 file is often invisible on the web. Converting JP2 to JPG or PNG makes archival material viewable anywhere; converting the other way gives long-term storage better compression.
+Strengths
- ✓True lossless mode
- ✓Better quality per byte than JPG
- ✓ROI / progressive decoding built in
!Limitations
- −No browser support
- −Slow to encode compared to JPG
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)
Why convert JPT to XPM?
Think of it as moving your file to the container that fits the job. No browser support XPM works differently: Plain text — diffs and greps If any of that sounds like your task, run the conversion — it takes seconds and nothing leaves your device.
Frequently asked questions
Is this JPT to XPM 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 JPT to XPM?
No — XPM is a lossless format, so every pixel of the converted image matches your original JPT file. You can also adjust the quality/size balance before converting when the target format supports compression.
Will transparent areas survive the conversion to XPM?
Transparency is kept whenever XPM 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.
What happens to EXIF data and other metadata?
Conversions here re-encode the image, and re-encoding generally does not carry the original metadata over. If the EXIF data of your JPT files matters (camera model, GPS, timestamps), keep the original file as the master and treat the converted copy as the shareable version.