No installation. No image upload. No account.
Drag and drop your DICOM or NIfTI file — it opens in seconds,
entirely in your browser. Your imaging data is never sent to any server.
Typical Online Viewer requires downloading a .exe and admin rights on a hospital computer. Scan Instant opens in any browser — Chrome, Safari, Edge — instantly.
Desktop DICOM tools are Windows-only. Scan Instant is mobile-first. A doctor can open a scan while walking between patients, in a taxi, or at home on the couch.
Files are parsed entirely in your browser using JavaScript. Your imaging data is never uploaded to any server.
"Designed for the doctor who needs to review a scan quickly."
SCAN INSTANT · CLINICAL UTILITY
No training required. If you can use a smartphone, you can use Scan Instant.
Open Scan Instant in any browser on any device. No download, no account, no waiting. The app is ready in under 5 seconds.
Drag and drop a DICOM file, a NIfTI file, or a ZIP folder from a hospital CD. The scan loads instantly, entirely on your device.
Scroll through slices, adjust window/level, measure distances, annotate, and export a PNG or findings report — all in the browser.
Scan Instant supports all standard DICOM and NIfTI formats — not just MRI.
Supports DICOM files from hospital CDs (ZIP folders), extensionless DICOM files, implicit and explicit VR transfer syntaxes. Ultrasound files in JPEG-compressed format are not currently supported.
Professional tools, zero complexity. Built for the 10-second use case.
One-click presets for Brain, Soft Tissue, Lung, Bone, Liver, Abdomen, and Angio — or drag to adjust manually.
Calibrated ruler tool with real-world millimetre measurements using DICOM pixel spacing data.
Draw a region of interest and get instant pixel statistics — mean, min, max, standard deviation.
Auto-scroll through slices like a video — essential for reviewing cardiac or dynamic sequences.
Load two series and compare them simultaneously — useful for before/after or multi-sequence review.
Generate a structured HTML findings report with patient info, scan metadata, and your annotations.
Save any slice as a high-quality PNG with the current window/level and annotations applied.
Save your session metadata as JSON and restore it later — annotations, window settings, and slice position included.
Compared to the most common desktop DICOM tools.
| Feature | Typical Online Viewer | Specialist Research Viewer | Scan Instant |
|---|---|---|---|
| Platform | Windows desktop only | Desktop (C++ / Linux) | Any device — web browser |
| Setup | Install required (admin rights) | Compile from source / dependencies | ✓ Zero install — open a link |
| Mobile | ✗ No | ✗ No | ✓ iPhone, Android, tablet |
| Privacy | Local only | Local only | ✓ Images stay local — no server upload |
| Speed to view | Minutes (install + load) | Minutes (compile + configure) | ✓ Seconds (drag and drop) |
| Target user | Radiologists / power users | MR spectroscopy researchers | GPs, surgeons, patients, all doctors |
| Cost | Free (Windows only) | Free (complex setup) | ✓ Free — no account needed |
From the radiologist reviewing a study to the patient who just received a CD from the hospital.
Doctors who need to review a scan quickly, outside of their hospital PACS system — on any device, anywhere.
Anyone who has received a DICOM file and needs to open it — without installing software or uploading to a cloud service.
No account. No install. No upload. Just open the link and drag the file.
⊕ OPEN SCAN INSTANT NOWFREE · WORKS IN ANY BROWSER · YOUR DATA STAYS ON YOUR DEVICE