Convert DNG to JPG in your browser by extracting the JPEG preview stored inside the file. DNG is the open RAW format published by Adobe: some cameras write it natively, many phones use it for their RAW mode, and converters turn other RAW files into it. Many DNGs carry a rendered preview, and this tool saves the largest as a .jpg exactly as stored, without re-encoding. How big that preview is depends on whatever wrote the file, so the result line always states the pixel size. Nothing is uploaded.
How it works
- Drop the .dng files. A file counts as DNG when it carries the DNG version tag, whichever camera, phone or app made it.
- There is nothing to set: the preview is saved as the JPG it already is, so format and quality are ignored.
- Press Convert & download, or collect a batch as one ZIP. A file with no usable preview is listed with the reason.
Questions
- What is a DNG file?
- DNG, short for Digital Negative, is an openly documented RAW format Adobe introduced in 2004. It stores the sensor data, the shooting details and often one or more rendered previews. Leica, Pentax and Ricoh cameras can record DNG directly, phones use it for RAW capture, and many photographers convert other RAW files to DNG for archiving.
- Why was my DNG file refused?
- Usually because its largest embedded preview is under 1 megapixel, or there is none. Whatever writes a DNG chooses the preview size: some phone apps store only a small thumbnail, and DNG converters commonly offer none, medium or full size. The message gives the preview’s dimensions. If you can re-export, choose a full-size preview.
- Does my file get uploaded?
- No. The models and all processing run inside your browser on your own device. You can verify this yourself: open your browser’s DevTools, watch the Network tab, and process a file: there are no uploads. After the first visit most tools also work fully offline.
- How are RAW files converted?
- Honestly: RAW files carry a full-size JPEG preview rendered by the camera, and that is what this tool extracts, instantly and losslessly. It does not demosaic the sensor data; a RAW developer with your own processing choices is the right tool for that.
- Why does HEIC need a special decoder?
- Browsers do not decode HEIC, so this page ships an open-source decoder (libheif, compiled to WebAssembly) that runs on your device. The photo itself still never leaves your machine.