Convert DICOM images (.dcm) into a PDF - locally in the browser, with no upload; the scan never leaves your device.
Running locally on your device ...
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Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
DICOM files (PS3.10) carry a medical image plus a lot of metadata, but they only open in a dedicated DICOM viewer. A PDF, by contrast, opens anywhere: to archive, print, attach to a report or share by email. This tool embeds the image data as a PDF page - entirely in your browser, so the original scan with its patient data is never uploaded anywhere.
Many DICOM transfer syntaxes are supported: uncompressed or losslessly compressed with RLE Lossless, JPEG Lossless (Process 14 and SV1, the compression common in older ultrasound/mammography/CT/MR PACS exports) or JPEG 2000, as well as JPEG Baseline - grayscale (MONOCHROME1/2, 8 or 16 bit, with Window Center/Width for brightness and contrast, otherwise automatic windowing) and colour (RGB). Each .dcm becomes its own PDF; a multi-frame series yields a multi-page PDF with one page per frame. The image is embedded losslessly as a PNG and keeps its native pixel size.
Technically a lean, pure-JavaScript decoder reads the pixel data out of the file, applies the windowing for grayscale and assembles the PDF page by page with pdf-lib. No foreign library from a foreign server and no upload is involved - the same privacy approach as every tool here: the scan stays on your device, and you only share the PDF you actually want to pass on.
| Input formats | DCM |
|---|---|
| Output format | |
| Batch processing | Yes |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Converts DICOM scans to a PDF: uncompressed or losslessly compressed with RLE Lossless, JPEG Lossless (Process 14/SV1) or JPEG 2000, as well as JPEG Baseline - grayscale (MONOCHROME1/2, 8/16 bit, with Window Center/Width or auto-windowing) and colour (RGB), including multi-frame (one page per frame). Each .dcm becomes its own PDF; the page has the native image size and the image is embedded losslessly. JPEG-LS, JPEG Extended (12 bit) and PALETTE COLOR are NOT read in this version - a clear message says so instead of producing a wrong image; export the file in a supported syntax then. The PDF is a viewable sharing copy and not a replacement for a clinical DICOM viewer.
No. Reading and building the PDF run entirely locally in the browser (pure JavaScript, no server); the scan with the patient data never leaves your device.
Uncompressed scans as well as losslessly compressed ones using RLE Lossless, JPEG Lossless or JPEG 2000, plus JPEG Baseline - grayscale (MONOCHROME1/2, 8/16 bit) and colour (RGB), including multiple frames. JPEG-LS and JPEG Extended (12 bit) are not read in this version - export the file in a supported syntax then.
A file with several frames becomes a multi-page PDF with one page per frame; several .dcm files each yield their own PDF.
No. The image is embedded losslessly as a PNG and keeps its native pixel size; for grayscale only the usual windowing for display is applied.
No. The PDF is a viewable copy for sharing, archiving and printing, not intended for clinical use; the full image context stays in the DICOM.