3FR to PBM Converter
FileFlip converts 3FR to PBM entirely inside your browser, using ImageMagick compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert a 3FR file to PBM?#
- Drop your 3FR file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to PBM and the conversion starts on its own. FileFlip downloads 14.1 MB of WebAssembly the first time and nothing after that, then runs ImageMagick on your own machine.
- Save the PBM file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting 3FR to PBM lose quality?#
No. Converting 3FR to PBM writes the data out again without discarding any of it, so nothing that was in the 3FR file is lost on the way. What changes is the size of the file, not what is inside it.
Is it safe to convert 3FR files online?#
Yes, because nothing is uploaded. FileFlip converts 3FR files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What 3FR to PBM actually does to the file#
Converting 3FR to PBM runs on ImageMagick, downloads 14.1 MB of WebAssembly the first time and nothing after that, writes the data out again without discarding any of it.
| Engine | ImageMagick |
|---|---|
| Conversion path | One step: 3FR → PBM |
| Downloaded to your browser | 14.1 MB, once, then cached by your browser |
| Quality | Lossless |
| You get back | One file |
| Where it runs | In a background worker, so the page stays responsive |
Worth knowing before you start:
- camera raw is demosaiced with ImageMagick's defaults, which will not match the camera's own rendering
- the target stores one bit per pixel, so the image is reduced to black and white
- some cameras write lossily compressed raw, so the source is not always a complete sensor record
What is a 3FR file?#
A 3FR file stores raw, minimally processed sensor data captured by a Hasselblad medium-format digital camera or digital back, a proprietary format Hasselblad introduced in 2006 with the H2D.
Shoot 3FR when working on a Hasselblad system and processing in Phocus, where the format's full sensor data and metadata are used as intended.
Convert 3FR to DNG or TIFF once editing is finished, since Phocus is the software most reliably guaranteed to read it and most archives and labs expect a more interoperable format.
What is a PBM file?#
A PBM file stores a strictly black-and-white, one-bit-per-pixel raster image as plain ASCII characters or packed binary bits, in the Netpbm project's Portable Bitmap format.
Use PBM for a strictly black-and-white bitmap, such as a fax page or a stencil mask, that needs to move between tools without any image library.
Convert PBM to PNG once the image needs compression or has to sit alongside greyscale or colour images in the same pipeline.
3FR to PBM questions people ask#
What camera shot my 3FR file?
A 3FR file was shot on a Hasselblad medium-format digital camera or digital back, such as the H-series or X-series bodies. Hasselblad introduced the format in 2006 with the H2D.
What opens a 3FR file?
Hasselblad's own Phocus software gives the most reliable results with 3FR since Hasselblad builds it specifically for their raw pipeline. Adobe Camera Raw, Lightroom and Capture One also read 3FR, though support can lag behind a brand-new Hasselblad body.
Is 3FR the same as Hasselblad's FFF format?
No. Both are Hasselblad raw formats, but FFF is an older container inherited from Imacon after Hasselblad acquired it in 2004, while 3FR is the format Hasselblad introduced with the H-series in 2006. Which one a file uses depends on which Hasselblad product produced it.
What should I convert a 3FR file to for long-term storage?
DNG keeps the raw sensor data and metadata in an openly documented container that doesn't depend on Phocus staying available, which makes it a safer archival choice than leaving files as 3FR.