X3F to PGX conversion is the process of translating Sigma/Foveon X3F raw image files into PGX (Portable Graymap Extended) format, preserving high-bit-depth linear or gamma-corrected pixel data for further processing. This conversion extracts raw sensor channels, metadata and color information from X3F and encodes them into PGX’s flexible high-precision grayscale or multi-channel structure suitable for archival, post-processing, or advanced image workflows.
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 .X3F file from your computer or use the browse function.
Confirm .pgx as the selected destination format.
Click "Convert" and download your converted .PGX file once ready.
The X3F file format typically uses the image/x-x3f MIME type and stores raw sensor data from Sigma cameras. PGX files use the image/x-pgx MIME type and employ wavelet compression codecs to reduce file size while maintaining image quality. Both formats serve niche purposes in photography and image processing workflows.
The PGX (.PGX) format is commonly used for image. Understanding its characteristics can be helpful when converting to or from other formats like X3F.
While specific technical details aren't available here, PGX files generally serve the purpose of storing image effectively within their domain.
Our Online X3F to PGX Converter allows you to easily convert your X3F files into the PGX format without the need for complex software. Designed for photographers and professionals working with raw image data, this tool ensures quick and reliable conversion directly from your browser.
X3F is a raw image file format primarily used by Sigma cameras, containing unprocessed sensor data. In contrast, PGX is a wavelet-based image format optimized for compression and efficient storage. While X3F files are ideal for detailed editing, PGX files are better suited for archiving and quick viewing.
Aim to keep individual X3F files under 200–500MB for faster uploads and processing; very large raw captures can slow conversion or time out.
To preserve maximum quality, export PGX in the same or higher bit depth (16-bit or 32-bit float) and use linear/raw mode rather than applying gamma or aggressive tonal mapping.
When converting many files, use batch conversion with parallel processing but limit concurrent jobs to avoid high memory usage; convert in smaller batches for systems with limited RAM.
Note format limitation: PGX stores per-pixel channel data but does not encapsulate camera-specific demosaicing metadata — demosaic or color-profile adjustments may need a separate step.
This X3F to PGX converter saved me hours of work!
Emily R.
Photographer
Very easy to use and reliable conversion every time.
Alex M.
Graphic Designer
Perfect for preserving image quality in a smaller file size.
Jordan L.
Archivist
Start your free X3F to PGX conversion now.
Drag your file here to to upload.
Up to 250MB
If you need color-corrected images, perform color matrix conversion and white balance before writing PGX, or keep a lossless raw PGX and apply color in downstream editors.