HDR to XPM conversion is the process of taking an image stored in a High Dynamic Range (HDR) format—which preserves a wider range of luminance and color information—and converting it into the X PixMap (XPM) format, a plain-text, indexed-color image format commonly used for icons and simple graphics in X Window System environments. This conversion maps HDR color data into XPM's limited palette and textual representation, making images usable in legacy GUI toolkits or as lightweight, editable icon assets.
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Read guide →Drag your .HDR file from your computer or use the browse function.
Confirm .xpm as the selected destination format.
Click "Convert" and download your converted .XPM file once ready.
HDR files commonly use the image/vnd.radiance MIME type and are often encoded with Radiance HDR codecs. XPM files use the image/x-xpixmap MIME type and are stored as plain text C source files, allowing easy embedding in applications. The HDR format focuses on high dynamic range imaging, whereas XPM is designed for bitmap icons and simple graphics.
The XPM (.XPM) format is commonly used for image. Understanding its characteristics can be helpful when converting to or from other formats like HDR.
While specific technical details aren't available here, XPM files generally serve the purpose of storing image effectively within their domain.
Convert your HDR files to the XPM format quickly and effortlessly using our online HDR to XPM converter. Designed for seamless image format conversion, this tool supports high dynamic range (HDR) images and outputs them in the versatile XPM format. Whether you're a developer, designer, or hobbyist, our converter simplifies the process without requiring any software installation.
HDR files store high dynamic range image data, capturing a wide range of luminance levels for stunning detail. In contrast, XPM is a plain text image format primarily used for icons and simple graphics in Unix-based systems. While HDR is suited for high-quality photography and imaging, XPM is optimized for lightweight graphical interface elements.
Keep HDR source files under 10–50 MB per image for fastest browser-based conversions; very large .exr files may be slow or require desktop tools.
Preserve perceived detail by applying a good tone-mapping operator (Reinhard or filmic) and adjusting exposure before color-quantization to XPM's limited palette.
For icon or UI use, target small dimensions (e.g., 16–128 px) and reduce palette size (16–64 colors) to keep XPM readable and compact.
Use dithering carefully: it helps retain gradients when reducing colors but increases textual complexity and file size; disable for crisp pixel-art icons.
This HDR to XPM converter saved me hours of work.
Anna L.
Photographer
Perfect for quick icon generation from HDR sources.
John M.
Software Developer
Easy to use and reliable for all my image conversion needs.
Emily R.
Graphic Designer
Start your free HDR to XPM conversion now.
Drag your file here to to upload.
Up to 250MB
Format limitation: XPM is indexed and ASCII-based, so it cannot store HDR luminance or alpha with high fidelity—expect loss of dynamic range and color precision during conversion.