Add your PEF file
Drop one or more .pef 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.
PEF to BMP
Developing a .pef camera file into .bmp 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 PEF 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 Pentax RAW to Bitmap image
Developing a .pef camera file into .bmp turns unprocessed sensor data into a finished image any app can open. A .pef file is a Pentax Electronic File, the proprietary RAW format of Pentax DSLRs now produced under Ricoh Imaging. Pentax is unusual in offering photographers an in-camera choice between .pef and Adobe's open DNG, making it one of the few brands to treat its native RAW as optional.
A .bmp file is the Windows bitmap format: raw pixel rows written to disk with a small header and, in the common case, no compression at all. Its brute simplicity makes .bmp trivial to read and write from any programming language, which is why it persists in tooling, embedded systems, and quick debugging dumps. For this route the practical draw is dead-simple structure with no decoding step at all and exactly lossless — what you write is what you read — balanced against no effective compression, so files dwarf PNG equivalents of the same image, which is worth knowing before you commit a large batch.
Why convert PEF to BMP?
The practical trigger for this conversion is usually a mismatch: with .pef, smaller ecosystem than Canon/Nikon/Sony formats, so niche tools sometimes lag. Switching to .bmp buys you dead-simple structure with no decoding step at all, which is why it is the better fit for quick lossless dumps from code, since a writer takes minutes to implement. Because the conversion runs locally, trying it costs nothing but a few seconds of compute on your own machine.
PEF vs BMP at a glance
| Aspect | Pentax RAW (.pef) | Bitmap image (.bmp) |
|---|---|---|
| Format type | Lossless — every pixel or sample is preserved exactly | Lossless — every pixel or sample is preserved exactly |
| How it stores data | tIFF-based structure holding 12- or 14-bit Bayer mosaic data depending on body generation | pixels are typically stored uncompressed; optional RLE encoding exists only for 4-bit and 8-bit palette images |
| Strongest at | raw development from Pentax K-mount DSLRs and the 645 medium-format line | quick lossless dumps from code, since a writer takes minutes to implement |
| Weak spot | smaller ecosystem than Canon/Nikon/Sony formats, so niche tools sometimes lag | no effective compression, so files dwarf PNG equivalents of the same image |
Pick BMP as the output
Select .bmp in the output menu next to each file. The menu only offers targets this engine can genuinely produce, so if BMP 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 BMP file. Outputs keep the original filename with the .bmp extension.
PEF to BMP questions, answered
Will converting PEF to BMP lose quality?
Since pef is lossless-oriented and bmp is lossless-oriented, the conversion preserves the source content exactly as stored; no additional compression pass is applied beyond what .bmp itself requires.
Is it private to convert PEF files here?
Yes — the .pef 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 BMP file work?
Windows treats BMP as a native citizen, and macOS, Linux, and all major browsers open it without complaint. The format's problem is never support but waste: emailing or hosting uncompressed bitmaps burns bandwidth for zero benefit, so converting to PNG is almost always an upgrade.
Will the BMP file be bigger or smaller than my PEF?
It depends on the content: pixels are typically stored uncompressed; optional RLE encoding exists only for 4-bit and 8-bit palette images. Convert one representative file first and compare before batch-processing a large set.
What happens to the metadata in my PEF file?
In .pef, full EXIF with Pentax MakerNotes covering lens ID, shake-reduction state, and drive modes; XMP edits are stored in sidecar files by mainstream editors. 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.