How to Convert ARW to JPEG on a Mac (2026 Guide)
A print shop, a client portal, or a forum upload just refused your .ARW file, and now you need a JPEG. Your Mac can make one without installing anything. Here are four ways to do it, from a single file in Preview to a whole card in Terminal, plus the settings that keep the result looking like your photograph.
The short version
| Situation | Use |
|---|---|
| One file, right now | Preview (File > Export) |
| A handful, and you want them in your library | Photos (import, then export) |
| A whole folder | sips in Terminal |
| You want to edit before converting | A RAW editor such as RevelRaw |
Method 1: Preview
- Double-click the .ARW file. It opens in Preview.
- Choose File > Export…
- Set Format to JPEG, drag the Quality slider toward Best, and save.
Preview exports at full resolution and takes about ten seconds. Two caveats. Preview renders Apple's default interpretation of the RAW data, so the JPEG looks the way macOS thinks the scene looked, with none of your intent in it. And if your camera is a recently released Alpha body, Preview may refuse the file until Apple ships RAW support for it; our guide to opening ARW files on a Mac covers the workarounds.
Method 2: Photos
- Drag the ARW files into Photos.
- Select them, then choose File > Export > Export Photos…
- Pick JPEG, set quality to Maximum, and choose a destination.
Photos handles several files at once and remembers them in your library, which you may want or may resent. The import step copies every RAW into the library bundle, so a 400-shot card costs you the disk space twice. Same rendering caveat as Preview: you get Apple's interpretation, unedited.
Method 3: sips, for whole folders
macOS ships with a command-line image tool called sips. Open Terminal, cd into the folder with your RAW files, and run:
sips -s format jpeg -s formatOptions 90 photo.ARW --out photo.jpg
To convert every ARW file in the folder:
for f in *.ARW; do
sips -s format jpeg -s formatOptions 90 "$f" --out "${f%.ARW}.jpg"
done
The formatOptions number is JPEG quality from 0 to 100. This uses the same macOS RAW engine as Preview, so the rendering and the new-camera limitation match, but it chews through a full card while you make coffee. No installs, no uploads, nothing leaves your Mac.
Method 4: Edit first, then export
Our app, so judge accordingly. The three methods above convert the file; none of them let you decide how the photograph looks first. RevelRaw is a native macOS editor built only for Sony Alpha. It decodes the .ARW with its own pipeline, ranks 40+ presets against the scene it detects in your photo, gives you the standard controls to fine-tune, and then exports JPEG with the choices that matter: quality, sRGB or Display P3 or Adobe RGB, and size presets for Instagram, print or web. The free download includes one full-quality export, so you can run a real file through before paying anything.
If you just need a fast, faithful copy of what the camera saw, use Preview or sips and keep your money. Reach for an editor when the JPEG is the finished product.
"Without losing quality," honestly
JPEG compresses by discarding data, so every conversion loses something. You control how much:
- Quality 85 to 90. Below 80 you invite banding in skies; above 92 the file balloons for gains you can't see. 90 is a safe default.
- sRGB for anything going online. Browsers and phone screens assume it. Wide-gamut exports look dull once a platform strips the profile. Our Instagram export guide has the full recipe.
- Keep the ARW. The RAW file is the negative. As long as it exists, the JPEG is disposable and you can re-export at any settings later. If you're weighing whether to shoot RAW at all, read RAW vs JPEG on a Sony Alpha.
FAQ
How do I convert ARW to JPEG on a Mac for free?
Open the file in Preview, choose File > Export, pick JPEG and set the quality slider. For a whole folder, run sips -s format jpeg -s formatOptions 90 photo.ARW --out photo.jpg in Terminal. Both ship with macOS.
Does converting ARW to JPEG lose quality?
Yes, by design; JPEG discards data to shrink the file. At quality 85 to 90 the loss is invisible on screens and in most prints. Keep the original ARW as your negative and you lose nothing permanently.
How do I convert many ARW files at once?
Use the sips loop above. It converts every ARW in the folder with the macOS RAW engine, no installs required.
Why won't my ARW file open in Preview?
Apple adds RAW support for new bodies through macOS updates, so files from a recently released Alpha can fail in Preview and Photos until an update lands. A dedicated editor with its own decoder, such as RevelRaw, doesn't wait on Apple's camera list.
Edit it before you convert it. Download RevelRaw, drop in an .ARW, and export one finished JPEG at full quality on the house. Get it on the Mac App Store.
Related reading: How to open ARW files on a Mac · Lightroom alternatives for Sony shooters