DICOM to JPEG Converter
Processing entirely on your device — large files may take a moment.
DICOM is the ISO standard for medical imaging — CT/MRI slices carry patient metadata, window/level display parameters and pixel data in one file. Only uncompressed transfer syntaxes are supported. Convert to or from JPEG when a tool or form specifically asks for the .jpeg extension — the pixels and compression behave exactly like JPG.
Because the whole conversion happens on your device, it is instant, unlimited and genuinely private — no accounts, no watermarks, no files on anyone's server. Multiple files are converted in one go.
How to convert DICOM to JPEG
- 1
Select your files
Drag & drop your DICOM files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to JPEG". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted JPEG file individually, or grab everything at once as a ZIP archive.
About the DICOM format
DICOM is the ISO standard for medical imaging — every CT/MRI slice bundles patient metadata, display parameters (window centre/width) and pixel data. The converter renders uncompressed transfer syntaxes through proper window/level mapping, exactly as a workstation would show it.
Patient and study metadata (name, ID, modality, date) are exported alongside the image as a text sidecar. Compressed transfer syntaxes (JPEG inside DICOM) are out of scope and reported clearly.
+ Strengths
- ✓Correct window/level greyscale mapping
- ✓Metadata exported as a text sidecar
- ✓MONOCHROME1/2, RGB and rescale handled
! Limitations
- −Compressed transfer syntaxes unsupported
- −Multi-frame volumes take the first frame
- −Huge CT stacks render slice by slice
About the JPEG format
JPG (short for JPEG, the Joint Photographic Experts Group committee that standardized it in 1992) has been the default photo format for over three decades. It compresses photographs using the discrete cosine transform: the image is split into 8×8 blocks, and details the human eye is bad at noticing are discarded. The result is files many times smaller than uncompressed data, at a quality level you control when saving.
In practice JPG is unbeatable for photographs and smooth gradients — camera memory cards, messaging apps and the web all assume it. It is a poor fit for screenshots, logos or anything with sharp edges and flat color, where compression leaves visible ringing around text. There is no transparency support, color depth is capped at 8 bits per channel, and every re-save with compression compounds tiny generational losses.
+ Strengths
- ✓Opens on literally every device, app and browser made in the last 30 years
- ✓Compresses photos dramatically — typically 10:1 or better with little visible loss
- ✓Quality level is adjustable, so you can trade fidelity for file size
- ✓Mature ecosystem: EXIF metadata, ICC profiles and progressive loading all supported
! Limitations
- −Lossy — artifacts appear on text, sharp edges and flat areas
- −No transparency, so overlays and logos need PNG or WebP instead
- −Repeated re-saving at low quality permanently degrades the image
Why convert DICOM to JPEG?
There is a concrete reason this conversion exists: Compressed transfer syntaxes unsupported JPEG sidesteps that — Opens on literally every device, app and browser made in the last 30 years If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this DICOM to JPEG converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Will converting DICOM to JPEG reduce quality?
JPEG uses lossy compression, so a small amount of recompression is unavoidable. The quality slider lets you choose between maximum fidelity and smallest file size — the default is visually indistinguishable for photos.
Will transparent areas survive the conversion to JPEG?
Transparency is kept whenever JPEG actually supports an alpha channel. If the target format has none (like JPG), transparent areas are flattened onto a white background — that is a property of the format, not of this tool.
Can I convert several DICOM files at once?
Yes — drop as many files as you like into the tool and they are converted in one batch. When more than one file comes out, everything is bundled into a ZIP for a single download.