XWD to PFM conversion is the process of transforming an X Window Dump (XWD) image — a raster screen-capture format produced by X11 environments — into a Portable Float Map (PFM) file, which stores high-precision floating-point RGB or grayscale image data. This conversion re-encodes pixel data and metadata so that standard imaging tools that support high-dynamic-range or scientific image processing can read and manipulate the content.
Related guides
Practical guides to help you choose formats, preserve quality, and avoid common conversion problems.
WebP has quietly become the default image format of the modern web, delivering 25-35% smaller files than JPG and PNG with universal browser support. This 2026 guide covers current adoption stats, browser compatibility, WordPress integration, conversion workflows, and when to choose WebP over AVIF for optimal Core Web Vitals performance.
Read guide →Not sure whether to save your image as PNG or JPG? This detailed comparison covers compression, transparency, file size, web performance, and real-world use cases so you can pick the right format every time — with conversion links when you need to switch.
Read guide →Learn how to convert HEIC to JPG for maximum compatibility. This guide explains what HEIC is, why iPhones use it, the key differences between HEIC and JPG, and walks through every conversion method including online tools, iPhone settings, Windows, and Mac.
Read guide →Drag your .XWD file from your computer or use the browse function.
Confirm .pfm as the selected destination format.
Click "Convert" and download your converted .PFM file once ready.
XWD files typically use the MIME type image/x-xwindowdump and are raw screen capture images. PFM files use the MIME type image/x-portable-floatmap and store floating point RGB data for high dynamic range imaging. The PFM format is supported by various advanced image processing codecs and tools for precise color manipulation.
The PFM (.PFM) format is commonly used for image. Understanding its characteristics can be helpful when converting to or from other formats like XWD.
While specific technical details aren't available here, PFM files generally serve the purpose of storing image effectively within their domain.
Easily convert your XWD image files to the PFM format using our online XWD to PFM converter. Designed for speed and simplicity, our tool supports seamless conversions without the need for software downloads or technical expertise.
XWD files are primarily used as screen captures in Unix environments and are limited in color depth and editing capabilities. In contrast, PFM files support high dynamic range imaging, making them ideal for professional graphic applications requiring precise color representation.
Keep source XWD files under 100–200 MB each for faster, more reliable web conversions; very large screen dumps (several hundred MB) are best processed locally.
To preserve quality, enable linear color conversion (disable gamma correction) when exporting to PFM, since PFM stores floating-point linear data best suited for HDR/scientific workflows.
For batch conversions, use a command-line tool or a bulk upload feature to process multiple XWD files; ensure consistent bit depth and screen geometry to avoid unexpected results.
Note format limitation: XWD contains X11-specific metadata (window IDs, colormap info) that may not map to PFM — colormap-dependent XWD files should be expanded to truecolor before conversion.
This converter made switching from XWD to PFM effortless and fast.
Alex M.
Photographer
The quality of the PFM files after conversion exceeded my expectations.
Linda S.
Graphic Designer
A reliable tool that handles my XWD files without any hassle or errors.
Mark D.
Developer
Start your free XWD to PFM conversion now.
Drag your file here to to upload.
Up to 250MB
If your XWD uses a palette/indexed colorspace, convert to full RGB first to avoid color loss; PFM expects per-pixel floating values rather than palette indices.