CR2 to JPG Converter

Canon EOS cameras save CR2 raw files with the sensor data and, next to it, a full-resolution JPEG rendered in the camera with your picture style, white balance and noise settings. Most phones, websites and office programs cannot open CR2, but they can open that JPEG. This tool reads the CR2 structure, takes out the camera's own JPEG and saves it as a normal .jpg — in your browser, so the files never leave your device.

How to use this tool

1. Drop one or more .cr2 files into the box.
2. Keep "Keep the camera JPEG unchanged" for an exact, lossless copy, or choose re-encode to set a quality and a maximum size.
3. Check the table: it shows the JPEG size and the camera's full image size side by side.
4. Download each JPG, or all of them as a ZIP.

Formula

CR2 = TIFF structure. IFD0 → StripOffsets / StripByteCounts → full-size JPEG (compression 6); IFD1 → JPEGInterchangeFormat → 160 × 120 thumbnail; IFD3 → lossless sensor data. The largest baseline JPEG a browser can decode wins.

Every JPEG candidate is checked by walking its markers to the end-of-image marker without decoding it; lossless sensor data (SOF3) is skipped. Portrait shots are made upright by writing the camera's orientation into a small Exif tag, so the picture itself is copied byte for byte. Re-encoding instead rotates the pixels and saves a new JPEG.

Example

A 20-megapixel CR2 whose camera image is 5472 × 3648 px normally holds a JPEG of the same 5472 × 3648 px. With "Keep the camera JPEG unchanged" you get that JPEG as IMG_1234.jpg with identical pixels, and the table shows Camera image 5472 × 3648 and "Full size: Yes". Re-encoding with a max long edge of 2048 px gives 2048 × 1365 px (3648 × 2048 ÷ 5472 ≈ 1365).