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 PBM
Developing a .x3f camera file into .pbm 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 bitmap
Developing a .x3f camera file into .pbm 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 .pbm file is a Portable Bitmap: the simplest image format in common use, storing exactly one bit per pixel — black or white, with no grey and no colour. It carries a two-character magic number, the width and height, and then the pixels, and nothing else. For this route the practical draw is small enough to specify in a paragraph and to write from a shell script and uncompressed and lossless, so nothing is hidden between the header and the pixels — balanced against one bit per pixel — no grey, no colour, no transparency, which is worth knowing before you commit a large batch.
Why convert X3F to PBM?
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 .pbm buys you small enough to specify in a paragraph and to write from a shell script, which is why it is the better fit for masks, stencils and other genuinely two-tone raster data. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
X3F vs PBM at a glance
| Aspect | Sigma RAW (.x3f) | Portable bitmap (.pbm) |
|---|---|---|
| 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 | two encodings share the extension: P1 stores pixels as ASCII 0 and 1 characters, P4 packs eight pixels into each byte |
| Strongest at | base-ISO landscape, product, and architecture work where Foveon detail shines | masks, stencils and other genuinely two-tone raster data |
| Weak spot | third-party support is the weakest of any major RAW format; Sigma Photo Pro is often the only full-fidelity path | one bit per pixel — no grey, no colour, no transparency |
| 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 optional # comments in the header. There is no colour profile, no EXIF and no timestamp; a PBM carries dimensions and pixels and nothing else |
Pick PBM as the output
Select .pbm in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if PBM 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 PBM file. Outputs keep the original filename with the .pbm extension.
X3F to PBM questions, answered
Will converting X3F to PBM lose quality?
Since x3f is lossless-oriented and pbm is lossless-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .pbm 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 PBM file work?
Netpbm, ImageMagick, GIMP and most scientific imaging tools read PBM; browsers and consumer applications do not. Novus Convert decodes both the ASCII and the packed binary form locally and converts to PNG, JPEG, WebP and the other raster targets — which is usually the point, since PBM is a good interchange format and a poor delivery one.
Will the PBM file be bigger or smaller than my X3F?
It depends on the content: two encodings share the extension: P1 stores pixels as ASCII 0 and 1 characters, P4 packs eight pixels into each byte. 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.