K25 to BMP Converter
FileFlip converts K25 to BMP 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 K25 file to BMP?#
- Drop your K25 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 BMP 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 BMP file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting K25 to BMP lose quality?#
No. Converting K25 to BMP writes the data out again without discarding any of it, so nothing that was in the K25 file is lost on the way. What changes is the size of the file, not what is inside it.
Is it safe to convert K25 files online?#
Yes, because nothing is uploaded. FileFlip converts K25 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 K25 to BMP actually does to the file#
Converting K25 to BMP 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: K25 → BMP |
| 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
- some cameras write lossily compressed raw, so the source is not always a complete sensor record
What is a K25 file?#
A K25 file holds the raw sensor dump written only by the Kodak DC25, a 1996 consumer digital camera and one of the first to save photos to a removable CompactFlash card.
K25 only comes up when opening images pulled from an original Kodak DC25 memory card; there is no reason to create one today.
Convert K25 to TIFF or PNG for long-term storage, since almost no current photo software recognizes the format directly.
What is a BMP file?#
A BMP file holds a device-independent bitmap: a pixel grid stored with a Microsoft-defined header and, in the overwhelming majority of BMP files in the wild, no compression at all.
Use BMP when a Windows-native application, printer driver, or legacy tool specifically expects it, or when pixel data has to be stored with zero encoding overhead for a processing pipeline.
Convert BMP to PNG or JPEG for anything leaving that pipeline, since both produce a far smaller file and PNG matches BMP's lossless, generation-safe quality.
K25 to BMP questions people ask#
What camera made this K25 file?
A K25 file comes exclusively from the Kodak DC25, a consumer digital camera released in 1996. No other camera ever wrote this format.
What still opens a K25 file today?
K25 files open in raw converters built on the LibRaw library, such as RawTherapee and darktable, which still list the Kodak DC25 among their supported cameras. Kodak's own software for the camera is long unsupported.
Is K25 the same as other Kodak raw formats like DCR or KDC?
No. K25 is specific to the Kodak DC25, while DCR belongs to Kodak's professional DCS-series cameras and KDC belongs to later Kodak consumer models. The extensions come from the same manufacturer but are not interchangeable.
Why are BMP files so much bigger than JPEG or PNG?
Most BMP files store every pixel's color value directly with no compression, so a BMP is close in size to the raw uncompressed image data. JPEG and PNG both apply compression, lossy in JPEG's case and lossless in PNG's, which is why the same photo saved as either is a fraction of the size of a BMP.