Add your X3F file
Drop one or more .x3f files onto the converter above, or browse for them. They load into browser memory only — nothing is uploaded, so there is no size-based pricing and no server queue.
X3F to PPM
Developing a .x3f camera file into .ppm turns unprocessed sensor data into a finished image any app can open. Free, private, and validated — the file never leaves your browser.
Private for supported formats — processed in your browser
Runs on your deviceConvert supported files
Drop X3F files here
Batch files can each use a different output. Nothing uploads for local conversions.
Working inputs include camera RAW, browser-local audio/video, PDF, CBZ/CBR comics, office documents, ebooks, markup, 3D models, structured text, images, and archives.About converting Sigma RAW to Portable pixmap
Developing a .x3f camera file into .ppm turns unprocessed sensor data into a finished image any app can open. An .x3f file is a Sigma RAW photograph captured with a Foveon X3 sensor, which stacks three photodiode layers so every pixel location records red, green, and blue directly. That architecture makes .x3f fundamentally different from Bayer-pattern RAW files — there is no color mosaic to demosaic — and gives Foveon images their reputation for peculiar, film-like per-pixel sharpness.
A .ppm file is a Portable Pixmap: a full-colour image storing three samples — red, green and blue — per pixel, with the maximum channel value declared in the header. It is the top rung of the Netpbm ladder and the most commonly encountered of the three. For this route the practical draw is full colour with no compression artefacts and no codec to implement and supports 16 bits per channel — balanced against completely uncompressed — typically several times the size of an equivalent PNG, which is worth knowing before you commit a large batch.
Why convert X3F to PPM?
The practical trigger for this conversion is usually a mismatch: with .x3f, third-party support is the weakest of any major RAW format; Sigma Photo Pro is often the only full-fidelity path. Switching to .ppm buys you full colour with no compression artefacts and no codec to implement, which is why it is the better fit for output from ray tracers and renderers that want no encoding dependency. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
X3F vs PPM at a glance
| Aspect | Sigma RAW (.x3f) | Portable pixmap (.ppm) |
|---|---|---|
| Format type | Lossless — every pixel or sample is preserved exactly | Lossless — every pixel or sample is preserved exactly |
| How it stores data | records three stacked layers per photosite, exploiting silicon's wavelength-dependent light absorption instead of a color filter array | p3 stores RGB samples as whitespace-separated ASCII integers; P6 stores them as interleaved raw bytes |
| Strongest at | base-ISO landscape, product, and architecture work where Foveon detail shines | output from ray tracers and renderers that want no encoding dependency |
| Weak spot | third-party support is the weakest of any major RAW format; Sigma Photo Pro is often the only full-fidelity path | completely uncompressed — typically several times the size of an equivalent PNG |
| Metadata | eXIF fields and Sigma's property lists are embedded in the container, but MakerNote conventions differ enough from Bayer vendors that generic tools extract less; ExifTool provides the most complete parsing | none beyond header comments. No ICC profile, no EXIF, no orientation flag — colour is interpreted as sRGB by convention rather than by declaration |
Pick PPM as the output
Select .ppm in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if PPM is selectable, the route is real and validated.
Convert on your device
Press Convert. A LibRaw WebAssembly decoder demosaics the sensor data in your browser and renders a developed image ready for export.
Verify and download
Each result is signature-checked before the download unlocks, so a failed encode can never masquerade as a valid PPM file. Outputs keep the original filename with the .ppm extension.
X3F to PPM questions, answered
Will converting X3F to PPM lose quality?
Since x3f is lossless-oriented and ppm is lossless-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .ppm itself requires.
Is it private to convert X3F files here?
Yes — the .x3f file is processed inside your browser tab and never uploaded. A LibRaw WebAssembly decoder demosaics the sensor data in your browser and renders a developed image ready for export. Close the tab and the file is gone from memory.
Where will the PPM file work?
Read by ImageMagick, GIMP, OpenCV, Netpbm and most scientific imaging software; not by browsers or consumer viewers. Novus Convert decodes both the ASCII and binary forms locally, honours the declared maximum value, and converts to PNG, JPEG, WebP, AVIF and the other raster targets for delivery.
Will the PPM file be bigger or smaller than my X3F?
It depends on the content: p3 stores RGB samples as whitespace-separated ASCII integers; P6 stores them as interleaved raw bytes. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my X3F file?
In .x3f, eXIF fields and Sigma's property lists are embedded in the container, but MakerNote conventions differ enough from Bayer vendors that generic tools extract less; ExifTool provides the most complete parsing. Re-encoding through the browser pipeline does not carry embedded metadata into the output, which doubles as a privacy scrub — check the exported file if you specifically need tags preserved.