RAW to JPG: How to Convert Camera Files

A RAW file is not an image yet

When a camera writes a JPG it has already made a series of decisions for you: white balance, contrast curve, sharpening, noise reduction, colour profile, and finally lossy compression. A RAW file skips all of that. It stores what each photosite on the sensor measured, usually 12 or 14 bits per channel, along with the settings the camera would have applied if you had asked for a JPG.

That is the whole point — every one of those decisions stays yours, and you have far more latitude to recover a blown sky or lift a dark subject. It is also why nothing can simply display the file. Something has to demosaic the sensor data, apply a colour profile and render an image before there is a picture to look at.

Why an in-browser converter cannot do it

Browser-based tools work by handing the file to the browser's own image decoder, which supports the formats the web uses: JPEG, PNG, GIF, WEBP, AVIF, BMP, SVG and, increasingly, HEIC. RAW is not one format but dozens of proprietary ones — Canon CR2 and CR3, Nikon NEF and NRW, Sony ARW, Fujifilm RAF, Olympus ORF, Panasonic RW2 — each with its own structure, and several of them undocumented.

Supporting them means shipping a decoding library per manufacturer and a colour profile per camera model, updated every time a new body is released. That is what dedicated RAW software does, and it is why the job belongs on your computer rather than in a browser tab.

The routes that actually work, free

• Your camera maker's software. Canon Digital Photo Professional, Nikon NX Studio and Sony Imaging Edge are all free and know their own sensors better than anything else does. Best colour, slowest interface.
• Windows: install the free Raw Image Extension from the Microsoft Store. Photos and File Explorer can then display most RAW files, and Photos can save a copy as JPG.
• macOS: RAW support is built in. Preview opens most files and File, Export saves JPEG. Finder's Convert Image Quick Action handles a batch.
• Adobe DNG Converter, which is free and does not need a Creative Cloud subscription. It converts any RAW to DNG, a documented open format that far more software can read.
• Darktable and RawTherapee, both free and open source, both full RAW editors with batch export.

The shortcut most people miss

A lot of cameras shoot RAW+JPEG. Check the folder for a .JPG with the same filename as each RAW — if the camera was set that way, the JPGs are already there and you do not need to convert anything.

Failing that, every RAW file has a full-size JPEG preview embedded in it, which is what the camera's rear screen displays. Some tools can extract that preview directly, which is instant and needs no rendering. It carries the camera's own processing rather than yours, but for a quick contact sheet it is often all you need.

Settings when you do export

Keep the RAW files

A JPG exported from a RAW is one interpretation of the data, baked in permanently. The RAW still holds the full dynamic range and the full bit depth, so you can go back in two years with better software and better judgement and get a different, better result. Storage is cheap; the moment is not repeatable.