Available for Mac and Windows

Free desktop DICOM viewer for Mac and Windows.

Download DN Viewer — a free DICOM viewer and DICOM reader for Mac and Windows — to open studies, connect to DICOM servers, use near-instant MPR, 3D rendering, and AI-powered segmentation and volume calculation tools, and keep reporting inside one fast desktop workspace.

Built for MRI-heavy workflows: your pane layouts come back exactly as you left them for each study, so you spend time reading, not rearranging.

Near-instant MPR Move through multiplanar views with minimal waiting.
DICOM server access Connect to remote studies directly from the desktop app.
3D render Bring volumetric review into the same workflow.
MRI layout memory Your protocol view reopens the moment you load a study. No rearranging, every time.
Chat & AI features Powered by radiologyassistant.ai ↗.
AI segmentation Use AI-powered segmentation and volume calculation tools for quicker region isolation and review. Read the guide →
DN Viewer running on Mac DN Viewer running on Windows workstation
Overview

Built for faster desktop review on Mac and Windows.

DN Viewer focuses on what matters most: native speed, direct DICOM server access, near-instant MPR, 3D rendering, AI-powered segmentation and volume calculation tools, and reporting tools that stay inside the app.

Why It Stands Out

A desktop workflow built for speed and focus.

This is not a browser-based viewer. It is a native app for Mac and Windows designed for fast image review and direct access to the studies you need.

MRI advantage: save your reading layout once and it comes back automatically for each new study. No manual rearranging, no loading screens — your protocol is just there.

Connectivity & Access

  • Direct DICOM server access from the desktop app.
  • DICOMweb support for modern web-based imaging workflows.
  • Download studies from the internet with custom teleradiology support.
  • Open local DICOM files directly from USB, CD/DVD, or any folder.

Visualization & Review

  • Near-instant MPR for faster spatial review.
  • 3D render inside the same reading workflow.
  • MRI layouts reopen automatically for each study — no rearranging needed.

AI & Reporting

  • AI-powered segmentation and volume calculation tools for faster region selection.
  • AI-assisted reporting with speech-to-text, AI-enabled drafting, and validation checks — significantly cutting down report drafting time.
  • Chat and AI features without leaving the viewer.

Platform

  • Native desktop app for Mac and Windows — not a browser-based viewer.
  • Free download — no subscription required to open local DICOM files or connect to a PACS.
DN Viewer DICOM server and PACS connection DICOM Server & PACS Access
DN Viewer near-instant MPR Near-Instant MPR
DN Viewer MRI layout memory MRI Layout Memory
DN Viewer chat and AI features Chat & AI Features
Desktop Download

DN Viewer for Mac and Windows.

Mac + Windows

DN Viewer runs as a native app, so near-instant MPR, 3D rendering, AI-powered segmentation and volume calculation tools, and study navigation stay fast and responsive in a true desktop workflow.

  • Native desktop app for Mac and Windows.
  • Free download — no subscription required for core features.

By downloading and using DN Viewer you agree to the End User License Agreement.

Enterprise

Need cloud backup, PACS server, or team sharing?

Enterprise plans add custom cloud backup, dedicated PACS server integration, enterprise-level study sharing across sites, and advanced reporting workflows.

See Enterprise options →
FAQ

Questions about DN Viewer.

Is DN Viewer free to download?+

Yes. DN Viewer is a free download for both Mac and Windows. Core DICOM viewing, DICOM server access, MPR, 3D rendering, and local file reading are included at no cost — no registration or subscription required to get started.

Does DN Viewer work as a DICOM reader as well as a viewer?+

Yes. DN Viewer opens and reads DICOM files from local folders, USB drives, CDs, or directly from a PACS or DICOM server. You can query, retrieve, and read studies without leaving the app.

Is DN Viewer available for both Mac and Windows?+

Yes. DN Viewer is a native desktop app for both macOS and Windows. The Mac version is optimised for Apple Silicon (M1/M2/M3/M4) and available on the Mac App Store. The Windows version is available on the Microsoft Store and as a direct .exe download.

How is DN Viewer different from a web-based DICOM viewer?+

DN Viewer is a native desktop application, not a browser-based viewer. That means faster image loading, GPU-accelerated MPR and 3D rendering, no internet dependency for local files, and no browser tab overhead. Your reading layout persists between studies automatically.

Contact

See how DN Viewer fits your workflow.

If you want a faster way to access studies, review images, and finish reports, DN Viewer is ready for a closer look.

  • One app for DICOM access, review, reporting, and AI assistance.