If you have a digital camera that shoots RAW, macOS handles decoding at the system level. Supported files open in Preview, Photos, and Finder Quick Look without extra software. Below you will find Apple's RAW support list, why a brand-new camera's files may not open, and how to export JPG from Preview and Photos. You will also find a workaround for unsupported cameras using a free conversion tool.
How MacOS RAW Support Works
Apple builds RAW decoding directly into macOS. Any app that uses the system's image pipelines-Preview, Photos, Finder Quick Look, can open supported RAW files without installing codecs or plugins. Windows requires manufacturer software or a separate RAW codec.
Apple publishes a list of supported digital camera RAW formats on its site. That list covers Canon, Nikon, Sony, Fujifilm, and others. If your camera appears on it, the files open immediately.
Because the decoding is built into the operating system, new camera support arrives through macOS updates. Buy a camera announced last week and its RAW files may not open until Apple ships an update. This is normal and applies across all brands.
Why a New Camera's RAW Files May Not Open
When a new camera model hits the market, the manufacturer and Apple need time to test and implement the RAW format. Support arrives in macOS updates, not through individual app updates. Connect a brand-new camera and see an error in Preview? Your macOS version does not yet include that model.
You have two options:
- Wait for a macOS update that adds your camera.
- Use the free Adobe DNG Converter for Mac to turn RAW files into DNG, which macOS reads even when the original camera is unsupported.
Files from unsupported cameras may show a generic icon or open as a tiny embedded thumbnail. That thumbnail is a JPEG-like preview baked in by the camera. It is not the full RAW data. You cannot edit or export a high-quality JPG from it.
Opening RAW Files in Preview
Preview is the simplest way to open a RAW file on a Mac, provided the file is supported. Double-click the file in Finder, or open Preview and choose File > Open. Preview decodes the RAW data and displays it. Zoom, pan, inspect details.
If Preview cannot open the file, you see an error: “The file could not be opened.” That means the camera is absent from Apple's support list for your current macOS version.
Exporting JPG from Preview
To convert a RAW file to JPG in Preview:
- Open the RAW file.
- Go to File > Export.
- In the format dropdown, choose JPEG.
- Use the quality slider to adjust compression. Higher quality gives a larger file; lower quality reduces file size.
- Click Save.
Done. Preview converts a single RAW file to JPG without opening Photos or any other app.
Using Photos to Manage and Convert RAW
If you prefer an organized library, use Photos. It imports RAW files and, when you shoot RAW+JPEG pairs, imports both together. By default, Photos shows the JPEG as the original. The RAW file sits alongside it, but you can choose to edit the RAW version.
Exporting JPG from Photos
To export a JPG from Photos:
- Select the photo or photos.
- Go to File > Export > Export [n] Photo(s).
- In the export window, choose JPEG as the photo type.
- Set quality and size options as needed.
- Click Export and choose a destination folder.
Photos also lets you export the original RAW file for another program. The export dialog includes an option to send the unmodified file.
Converting Unsupported RAW Files to DNG
If your camera is unsupported by macOS, you are not stuck. The free Adobe DNG Converter for Mac turns RAW files from unsupported cameras into DNG, a lossless format macOS reads. DNG is an open standard, and Apple includes DNG support at the system level. After conversion, Preview and Photos open the files.
To use the DNG Converter:
- Download and install the free Adobe DNG Converter for Mac.
- Open the application.
- Select the folder containing your RAW files.
- Choose a destination folder for the converted DNG files.
- Set conversion options, the defaults work for most cases.
- Click Convert.
After conversion, the DNG files appear in your destination folder. Open them in Preview or import them into Photos. This method works for very new cameras, as long as the DNG Converter has been updated for that model.
Quick Look and Other Built-in Options
Finder's Quick Look shows a RAW file without opening any app. Select the file and press the spacebar. Supported files display a large preview. Quick Look uses the same system decoder, so if Preview opens it, Quick Look does too.
If Quick Look shows only a generic icon, the file is unsupported by your current macOS. Convert it with the DNG tool.
Another built-in route: the Photos import function. Connect a camera or insert a memory card and Photos can pull in RAW files automatically. After import, export JPG versions as described above.
Practical Tips for Mac RAW Workflows
Keep macOS updated. New camera support arrives in system updates, so install them promptly.
Check Apple's support list before buying a camera if you rely on built-in RAW decoding. If you shoot RAW+JPEG, remember that Photos shows the JPEG by default. Use the “Edit” button and then “Revert to Original” to reach the RAW data.
For unsupported cameras, convert to DNG once and keep the original RAW files as backups. If you need a quick online conversion for a single file, jpeg2raw.com works as a browser-based option. For bulk or high-volume work, the built-in tools or the DNG Converter are more reliable.