JP2 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 JP2 format, this page is the shortcut: JPEG 2000 (JP2) is the wavelet-based successor of JPG — better detail at equal bitrate plus a true lossless mode, still standard in archives, medical imaging and Digital Cinema.
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 JP2 compares to XPM
| JP2 | 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 JP2 to XPM
- 1
Select your files
Drag & drop your JP2 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 JP2 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 JP2 to XPM?
Converting makes sense where the strengths of XPM meet what JP2 cannot give you. Plain text — diffs and greps Meanwhile No browser support One pass through the converter above puts your file on the right side of that trade-off.
Frequently asked questions
Is this JP2 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 JP2 to XPM?
No — XPM is a lossless format, so every pixel of the converted image matches your original JP2 file. You can also adjust the quality/size balance before converting when the target format supports compression.
Can I convert several JP2 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 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.