What raw files are, and why convert them
A raw file stores the unprocessed data from the camera sensor, before colour, sharpening and compression are applied. It gives photographers maximum control when editing, but raw files are large, often 20–60 MB, and most apps, websites and phones can’t display them. A JPG is the finished photo: small, universal and ready to share.
How to use it
- Choose a quality: 90% is a good choice for photos you care about.
- Choose your DNG files or drop them on the box above.
- Download each JPG, or all of them as a ZIP.
How the photo is developed
The raw data is processed by LibRaw, the open-source raw decoder used by many photo applications:
- demosaicing turns the sensor’s colour pattern into a full-colour image
- colour is converted to standard sRGB for screens and the web
- orientation is applied so the photo is upright
- full resolution is kept
There’s no creative editing: no extra contrast, saturation, noise reduction or lens correction. That gives a faithful, neutral starting point.
When to use a photo editor instead
If you want to fix exposure, white balance or shadows before exporting, use a raw editor such as Lightroom, Capture One, darktable or RawTherapee. This converter is for quickly getting a viewable, shareable JPG from raw files, for example to send previews or to check photos on a computer without raw software.
Privacy
Photos are developed entirely in your browser. Your raw files are never uploaded, and location and camera details aren’t copied into the JPG.
iPhone ProRAW tips
ProRAW files are large, often 25–75 MB each, because they hold far more data than ordinary photos. In the Photos app, select the photos, tap Share and choose Save to Files, then convert them from Files in Safari or on a computer. A computer handles big batches more comfortably than a phone.
Questions
What is a DNG file?
DNG (Digital Negative) is Adobe's open raw photo format. It's used by Leica, Pentax, some Samsung and Google phones, iPhone ProRAW, and Lightroom when converting other raw files.
Does it work with iPhone ProRAW photos?
Yes. ProRAW photos are DNG files. Save them to Files from the Photos app first, then choose them here.
Why does the JPG look flatter than on my camera or phone?
Cameras and phones apply their own colour, contrast and sharpening when they make a JPG. This converter develops the raw data with neutral standard settings, so the result can look a little less punchy. Adjust it in a photo editor if needed.
Why is the first conversion slow?
Raw decoding needs ImageMagick with LibRaw (about 15 MB), loaded once. Each raw photo then takes a few seconds to develop, because raw files hold far more data than JPGs.
Last reviewed 1 November 2026