PCX to RAF Converter
Convert PCX to RAF in your browser. You download a Linear DNG (.dng), not a .raf: only a Fujifilm camera can create a genuine RAF, and every editor that opens RAF also opens DNG. Nothing is uploaded.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
PCX expected · other image formats also work
How to use PCX to RAF
- 1
Add your PCX files: drop them here, choose them, or paste from the clipboard.
- 2
There is nothing to tune: the DNG is written uncompressed. Resizing and rotating are under More options if you need them.
- 3
Click Convert. Each file is decoded and encoded in a background thread on this device.
- 4
Download the .dng files one at a time or together as a ZIP.
Why use Aback Images for pcx to raf
Where a RAF would go
RAF files are opened by Fujifilm X RAW Studio, Lightroom, Photoshop Camera Raw, Capture One and darktable, and every one of them opens the DNG too.
DNG next to PCX
The DNG is written uncompressed, so expect it to be several times larger than the PCX, which stores byte-wise run-length encoding.
Written without a lossy pass
The DNG is written uncompressed, so the pixels decoded from the PCX arrive unchanged.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
PCX vs RAF
What changes from PCX to RAF
Encoding: the PCX uses byte-wise run-length encoding; RAF uses uncompressed or lossless compressed sensor data in Fujifilm's own container, and the download is a Linear DNG: demosaiced 8-bit RGB with the colour matrices raw editors need.
Bit depth: 1, 2, 4 or 8 bits per pixel with a palette, or 24-bit as three 8-bit planes in the PCX; RAF allows 12 to 16 bits per channel depending on the camera, and the DNG written here has 8 bits per channel, linearised.
Colour: a 16 or 256-colour palette, or 24-bit RGB in the PCX; RAF supports camera RGB from an X-Trans 6×6 or Bayer 2×2 mosaic, written here as 8-bit sRGB.
Metadata: the PCX can carry only a 128-byte header with the resolution; RAF can carry EXIF and Fujifilm maker notes, including the Film Simulation, but nothing is copied across.
About PCX
PCX is the image format of ZSoft's PC Paintbrush, the standard for DOS paint programs, scanners and games before GIF and BMP took over. It compresses with a simple run-length scheme.
A PCX file has a 128-byte header (the byte 0x0A, version, encoding, bits per pixel, image window, DPI, a 16-colour palette and the number of colour planes), then RLE-compressed scanlines; 256-colour files end with the byte 0x0C and a 768-byte palette.
PCX files usually come from DOS paint programs (PC Paintbrush, Deluxe Paint), old games, and fax and scanner software.
About RAF
RAF is the raw format of Fujifilm cameras, from the X series to the medium-format GFX. Most X-series bodies use an X-Trans sensor with a 6×6 colour filter pattern instead of the usual Bayer 2×2.
RAF is not TIFF at the top level: it opens with the text 'FUJIFILMCCD-RAW', then a header with the camera model and offsets to three blocks: a JPEG preview near the start of the file, a header describing the sensor layout, and the sensor data.
RAF files come from Fujifilm X-T, X-H, X-S, X-E, X100 and GFX cameras.
When converting PCX to RAF makes sense
Forms and workflows that ask for RAF usually feed a raw editor, and each of those opens DNG as well, so the DNG can take the RAF's place. Keep the PCX if you only need to view or share the picture.
What RAF offers when it comes straight from the camera: Film Simulation baked into the embedded JPEG; Lossless compressed option on recent bodies; Large medium-format files from GFX cameras. Its drawbacks: Fujifilm's own container rather than TIFF; X-Trans demosaicing differs between raw editors; Film Simulations need camera-matching profiles in third-party editors.
Limitations
- DOS art was often drawn for 320×200 screens shown at 4:3, where pixels were slightly taller than wide, so it can look a little squashed on a modern display.
- A palette PCX holds at most 256 colours, so a full-colour target keeps them exactly but adds nothing.
- The DNG holds the decoded 8-bit pixels, so it adds no dynamic range or detail beyond the PCX.
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Frequently asked questions
Why do I get a .dng file instead of a .raf?
A real RAF is written by Fujifilm cameras and holds the sensor's own readings (12 to 16 bits per channel depending on the camera, stored as uncompressed or lossless compressed sensor data in Fujifilm's own container) along with EXIF and Fujifilm maker notes, including the Film Simulation. A PCX holds no sensor data, so no software outside the camera can create a genuine RAF. The Linear DNG you get instead is Adobe's open raw format, and every editor that opens RAF files opens it with the same raw controls. It holds decoded pixels, so it adds no quality or dynamic range.
Does converting PCX to RAF lose quality?
DNG is written uncompressed, so the pixels are stored exactly as decoded.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.