Host a DICOM file and share it as a link
Put a medical image online at its own address — with a serious caution about what's inside the file.
Drop your DICOM file here
Any other file works too — up to 25.0 MB, or 100.0 MB for a whole site
Free to use. Your DCM file is live at your-name.99helpers.site in about ten seconds.
What is a .dcm file?
DICOM is the standard for medical imaging — MRI, CT, X-ray and ultrasound. Crucially, a DICOM file is not just a picture: it embeds patient name, date of birth, hospital identifiers and study details directly in the file's metadata, which is what makes casually sharing one a problem.
What people use DCM files for
- Teaching cases in medical education
- Anonymised images in research datasets
- Images shared with a specialist for a second opinion
- Test data for imaging software development
What opens a DCM file
- Horos, OsiriX and RadiAnt
- 3D Slicer and ImageJ
- Hospital PACS systems
- No browser displays DICOM
How to host a DCM file
- 1
Drop your DCM file in
Drag it onto the box at the top of this page, or click to choose it. Files up to 25 MB are supported, and nothing is uploaded until you publish.
- 2
Pick an address
Type a name and we'll tell you straight away whether it's free. That becomes the link: teaching-case.99helpers.site
- 3
Publish and share
Create a free account — that step exists so the file is yours to update, replace or delete — and the link is live within seconds.
The same three steps work for any file — see how file hosting works on 99helpers.com.
What happens when someone opens the link
The file downloads and requires a DICOM viewer. Browsers don't render it, and ordinary image viewers generally can't either.
Why host a DCM file instead of emailing it?
Teaching cases and research datasets need to be distributed, and DICOM files are large. But this is one format where hosting demands real care, because the file carries identifying data whether or not the image itself does.
Worth knowing before you publish
- Anonymise before publishing. A DICOM file embeds patient name, date of birth and identifiers in its header — stripping them is a deliberate step, not something that happens automatically.
- Anyone with the link can download the file, so identifiable patient data must never be hosted here.
- Exporting a frame to PNG or JPEG gives a viewable image with none of the metadata attached.
- Check your institution's rules — this is public hosting, and clinical data usually can't be on it.
DCM hosting questions
- Is it safe to host a DICOM file?
- Only if it has been properly anonymised. DICOM headers carry patient name, date of birth and hospital identifiers, and this is public hosting where anyone with the link can download the file. Identifiable clinical data does not belong here.
- How do I remove patient data from a DICOM file?
- Use a dedicated anonymisation tool — Horos, 3D Slicer and DICOM Cleaner all do it. Renaming the file changes nothing; the data is in the header.
- What opens a DICOM file?
- Horos or OsiriX on Mac, RadiAnt on Windows, 3D Slicer on both. No browser displays it, so exporting a PNG is the way to make an image anyone can see.
Put your DCM file online now
It takes about ten seconds, and you only make an account once the file is ready to go live.
Hosting guides for related formats
DCM is one of over 211 formats you can host — see free file hosting for any file type for the full list, or read the hosting guides for other file types.