DICOM to NIfTI converter (online)
Convert a DICOM series to a NIfTI (.nii.gz) file entirely in your browser. It uses dcm2niix compiled to WebAssembly, so files are never uploaded and DICOM identity tags are dropped in the process.
Opens: A folder of DICOM (.dcm) files. · Files are processed in your browser — nothing is uploaded.
How to use it
- 1.Click “Upload DICOM folder” and select your DICOM series.
- 2.It is converted to NIfTI in your browser (dcm2niix WASM), with PHI tags removed.
- 3.Click “Export volume (.nii.gz)” to download the converted, de-identified NIfTI.
FAQ
- Is the DICOM to NIfTI conversion done in the browser?
- Yes. dcm2niix runs as WebAssembly locally, so your DICOM files are not uploaded to any server.
- Does the NIfTI keep patient identity tags?
- No. The conversion produces a NIfTI whose DICOM identity tags have been stripped, so the exported file is de-identified.
- What output format do I get?
- A gzip-compressed NIfTI (.nii.gz), the standard format for neuroimaging and research pipelines.
Want your scan explained in plain language?
The viewer is free. Create an account to upload a scan (de-identified in your browser) and get an AI-generated, plain-language report and grounded Q&A. Informational only — not a medical diagnosis.