RAW to JPG Converter

Every camera RAW format stores two things: the unprocessed sensor data, and at least one JPEG the camera rendered itself with your picture style and white balance. Browsers, phones and most websites cannot open the RAW part, but they can open the JPEG. This converter finds the largest embedded JPEG in CR2, CR3, NEF, ARW, DNG, RAF, ORF, RW2, PEF, SRW and other RAW files and saves it as a normal .jpg — entirely in your browser, so nothing is uploaded.

How to use this tool

1. Drop one or more RAW files — different camera brands can be mixed.
2. Keep "Keep the camera JPEG unchanged" for a lossless copy, or re-encode to rotate the pixels and choose quality and size.
3. Check the table: it compares the embedded JPEG with the camera's full image size.
4. Download the JPGs, or all of them as a ZIP.

Formula

TIFF-based RAWs (CR2, NEF, ARW, DNG, ORF, PEF, SRW, RW2 …): walk IFD0, the next IFDs, SubIFDs (0x014A) and the Exif IFD for JPEGInterchangeFormat (0x0201/0x0202) and JPEG-compressed strips; RW2 also has JpgFromRaw (0x002E). CR3: ISO-BMFF track 1, sample 1. RAF: offset and length at bytes 84 and 88. Otherwise: scan for FF D8 FF.

Each candidate is followed from its start marker to its end marker without decoding; lossless or 12-bit sensor JPEGs are skipped. The largest one the browser can decode is used. If it is smaller than the camera image size recorded in the file, the result says so, because some formats only keep a reduced preview.

Example

A batch of IMG_0001.CR2, DSC_0002.NEF and DSC00003.ARW gives three JPGs. The CR2 and NEF usually contain full-size JPEGs ("Full size: Yes"); many Sony ARW files contain only a 1616 × 1080 px preview, so that row shows "No" next to the camera size, for example 6000 × 4000 px.

Which formats give full-size JPGs?

Canon CR2 and CR3 files from recent models hold a full-resolution JPEG, as do many Nikon NEF files. Sony ARW usually keeps 1616 × 1080 px, DNG files from phones and converters often hold 1024 px or none at all, and Fujifilm RAF and Panasonic RW2 files usually keep reduced previews. When the embedded JPEG is too small, develop the RAW in Lightroom, darktable, RawTherapee or the maker's software.