free · in-browser · no upload

DICOM to JPG
Converter

Drop your DICOM file. We'll convert it to JPG right here in your browser, your file never leaves your device.

or drop your file

Select your file here to get started

or drop your file here.

Accepts .dcm, .dicom

nothing uploaded no file size cap no signup

How it works

Three steps. No upload, no signup.

1
Drop your file
Click the dropzone above or drag a DICOM from your desktop. Files of any size, there's no upload, so there's no upload limit.
2
Convert in your browser
The conversion runs entirely in this tab using JavaScript and WebAssembly. Your file never touches our servers, we don't have any.
3
Download
Get your JPG the moment the conversion finishes. Convert another, or close the tab.

Files stay on your device

Your file is never uploaded. The entire conversion runs in your browser using WebAssembly. We can't see what you convert because we have no server to see it.

No file size limit

Server converters cap free users at 1-2 GB and gate larger files behind a paid plan. Since nothing uploads, our limit is whatever your browser can handle.

Free, no signup, no ads on conversions

No account required. No watermark on the output. No queue. Drop a file, get a converted file.

Why convert DICOM → JPG

What this conversion is actually for

DICOM is the medical-imaging standard but no email client, social platform, or generic image viewer renders it. JPG is the universally-shareable raster format. Conversion runs entirely in your browser, so patient data never leaves the device, important for HIPAA-bound workflows.

A real example

A patient wants a copy of their MRI scan to email to a second-opinion clinician. The portal gave them a .dcm file. Convert here to JPG, attach to email, done.

Troubleshooting

Image looks too dark or too bright.

DICOM uses 12 to 16-bit grayscale with explicit window/level metadata. We use the metadata if present, otherwise auto-compute. If the result looks off, the source file may be missing the window/level tags; in that case open it in a real DICOM viewer to find the intended values.

Only one image came out of a multi-frame study.

We render the first frame for now. Multi-frame DICOMs (CT slices, time-series MR) need a sequence export which is a different shape. If you need every frame, use a desktop DICOM tool.

Formats involved

About DICOM and JPG

DICOM, Digital Imaging and Communications in Medicine

DICOM is the universal medical imaging format — every X-ray, CT scan, MRI, ultrasound, mammogram, PET scan, and most pathology slides from every modern PACS (Picture Archiving and Communication System) is DICOM. The format wraps a pixel-data payload (the actual image) with a rich metadata header carrying patient identifiers, study/series/instance UIDs, imaging modality, acquisition parameters, window/level presets, and per-vendor private tags. Spec maintained by NEMA (National Electrical Manufacturers Association); first published in 1985 as ACR-NEMA 1.0, became DICOM 3.0 in 1993, still actively versioned today. Wire format: 128-byte preamble + `DICM` magic + tagged-value stream where each tag is a (group, element) pair indexing into the DICOM Data Dictionary.

How to open

Hospital workstations open DICOM natively. For desktop viewing: RadiAnt, OsiriX (macOS), Horos (macOS, free), MicroDicom (Windows, free), Weasis (cross-platform Java). For programmatic access: dcmtk (CLI), pydicom (Python), dcm4che (Java). The free MyChart-equivalent apps from most hospital systems also surface DICOMs from your own scans.

Full DICOM format guide →

JPG, Joint Photographic Experts Group

JPG (also written JPEG) is the most widely used photo format on the web. The format dates to 1992 and uses lossy compression, discarding image detail in exchange for dramatically smaller files. It can't carry transparency. Modern alternatives like WebP and AVIF compress 25-50% better at the same visual quality, but JPG remains the universal compatibility default: every browser, OS, and image editor in existence reads it.

How to open

Every operating system opens JPG natively, double-click on Windows, macOS, Linux, iOS, or Android and the system viewer launches. Browsers render JPGs inline. Image editors (Photoshop, GIMP, Affinity Photo, Pixelmator, Photopea in the browser) all read and write JPG.

Full JPG format guide →

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FAQ

Common questions

Is this DICOM → JPG converter really free?

Yes. No signup, no watermark, no daily file count limit. Every conversion runs in your browser, your file never touches our servers because there are no servers.

Where does my file go when I convert it?

Nowhere. The conversion runs entirely in your browser using JavaScript and WebAssembly. Your file is never uploaded to our servers. We don't have any servers handling files, there's nothing for us to log, store, or accidentally leak.

What's the maximum file size?

Whatever your browser can hold in memory. Practically, this means a few hundred MB on most computers, significantly larger than the 1-2 GB caps that server-upload converters charge for. Very large files (multi-GB) may require closing other browser tabs first.

Why convert DICOM to JPG?

Medical imaging interchange — sharing scans between hospitals, second opinions, research datasets, patient downloads from EHR portals. Photographs and any web image where transparency isn't needed. The most common reason to convert is compatibility, JPG works in places where DICOM doesn't, or vice versa.

How do I open a DICOM file in the first place?

Does this work offline?

Once the page is loaded, the conversion itself runs entirely offline. The first time you use a tool, your browser downloads the conversion library (a one-time cache). If you reload while offline, the page won't load, but you can install the site as a Progressive Web App for full offline use.

Can I convert multiple files at once?

Single file at a time for now. Batch conversion is on the roadmap, for now, drop one file, download the result, then convert the next.

DICOM to JPGConverter