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Supports: ARW
ARW (Alpha RAW) is Sony's proprietary RAW format, introduced with the α100 DSLR in June 2006 and used by every α-series body since. It is a TIFF/EP-derived container (ISO 12234-2) that stores 12-bit or 14-bit unprocessed sensor data plus camera-specific metadata — perfect for editing, useless for sharing. JPG is the universal output format every browser, phone, social platform, and printer understands.
| Property | ARW (Sony RAW) | JPG (JPEG) |
|---|---|---|
| Container | TIFF/EP-derived (ISO 12234-2) | JFIF / Exif (ISO/IEC 10918-1, 1992) |
| Bit depth | 12-bit (older / cRAW) or 14-bit | 8 bits per channel |
| Compression | Uncompressed, lossy cRAW, or lossless (ARW 4.0, 2021+) | Lossy DCT, adjustable quality |
| Typical file size | 30-90 MB (24-61 MP) | 5-25 MB at high quality |
| Browser support | None — needs a decoder | Universal: every browser since 1993 |
| Editing latitude | ~14 stops dynamic range, full white-balance control | Baked-in exposure & WB; ~3-4 stops usable |
| Native opener | Imaging Edge Desktop, Lightroom, Capture One, RawTherapee, darktable | Any OS, any browser, any phone |
| Best for | Editing, archiving the original capture | Sharing, web, print, delivery |
| Preset | Approximate JPEG quality | Use when |
|---|---|---|
| Very High (default) | ~95% | Final deliverables, prints, client galleries — visually lossless on most images |
| High | ~85% | Social media, blogs, portfolios — smaller files with no obvious artifacts |
| Medium | ~70% | Email attachments, thumbnails, fast review batches |
| Low | ~50% | Web placeholders, contact sheets |
| Lowest | ~25-30% | Quick proofs where size matters more than fidelity |
If you need a smaller JPG after converting (for example to fit a Discord 10 MB free-tier attachment), run the output through Compress JPG.
Yes. Sony added lossless compression in ARW 4.0 (introduced with the α1 in 2021 and later rolled out to the α7 IV via firmware 1.1 in October 2022 and α7R V at launch). The converter reads all three ARW flavors — uncompressed, lossy cRAW, and lossless compressed — so you do not need to set the camera back to uncompressed RAW before converting.
The camera LCD shows the in-body JPEG render with your Creative Look / picture profile, sharpening, and noise reduction applied. The converter develops the raw sensor data using a neutral default profile, so colors and contrast may look flatter. For an exact match to the camera preview, the JPEG embedded inside the ARW (visible via tools like FastRawViewer) is what the LCD shows — but it is only a low-resolution preview, not the full image.
Yes. Camera body, lens model, focal length, aperture, shutter speed, ISO, white balance, and GPS coordinates (when recorded) carry over into the JPG's Exif block. Sony-specific maker-note fields like AF point and focus distance generally do not survive because they are proprietary to the ARW container.
Pixel-shift produces four or sixteen ARW files that must be merged in Imaging Edge Desktop or specialty software before they make sense as a single image. This converter treats each ARW individually — convert the merged output (export a TIFF from Imaging Edge first) rather than the raw burst.
JPG is right for sharing and delivery. Choose PNG when you need lossless 8-bit output and transparency support (rare for photos but useful for product cutouts). Choose TIFF when you need 16-bit depth for further editing without re-introducing JPEG artifacts.
Yes — APS-C bodies write the same ARW container, just at lower resolution (24-26 MP for current APS-C, vs 24-61 MP for full-frame). Conversion behaves identically.
Files travel to the conversion service over an encrypted connection, are processed, and are auto-deleted shortly after. No account is required and no watermark is added. If you need stricter on-device-only processing, RawTherapee and Capture One Express run locally as free desktop alternatives.
Yes. Drop a whole folder of ARWs in one go; every file is converted with the same Quality Preset and resize settings. For mixed Sony bodies on one card (full-frame and APS-C), the converter still applies the same JPEG settings to all, so resize by percentage rather than fixed pixels if you want proportional output.
In-camera JPEGs apply Sony's Creative Looks, noise reduction, and sharpening at capture time — fast but irreversible. Converting the ARW later gives you full sensor data to start from, with a neutral render. If you only ever shoot JPG fine in-camera and never plan to edit, you do not need this tool; it exists for photographers who shoot RAW+JPEG or RAW-only and now need shareable output.