How to inspect DCM, DICOM files
DICOM contains pixels plus patient, device, and exam information. This tool is only for single-file access and education, never diagnosis, treatment, or clinical decisions.
- On a trusted device, choose one .dcm or .dicom file.
- Review transfer syntax, rows, columns, bit depth, and essential tags.
- Preview grayscale pixels when the uncompressed format is supported.
- Remove names, IDs, and exam dates before sharing screenshots.
What it helps with
- Temporary single-file inspection without an imaging workstation
- Pixel preview alongside essential tags
- The file is parsed inside this browser tab and is not uploaded to FreeTool to use the tool.
Compatibility and limitations
- Not a certified medical device and not for diagnosis
- This version previews common uncompressed 8/16-bit grayscale pixels; compressed syntax, series, SR, segmentation, and multiframe objects are incomplete
- Web display does not replace a calibrated workstation or radiology report
Frequently asked questions
Can it open DCM files from a CT disc?
You can try one DCM file; DICOMDIR, series ZIPs, bundled executables, and encrypted content are not supported yet.
Why do I see tags but no image?
The file may use an unsupported compressed transfer syntax or may not be a pixel image object.
Is patient information uploaded?
Processing is local, but DICOM itself is sensitive; use a trusted device and share screenshots carefully.