ARW Converter

ARW Converter — Sony Raw to JPG, PNG, TIFF, and More

ARW is Sony's Alpha Raw format — the unprocessed sensor data your Alpha, ZV, or RX camera writes when you shoot RAW. It holds far more tonal range than a finished photo, but almost nothing outside dedicated photo software opens it, which is why you upload an ARW and download a JPG, PNG, TIFF, or WebP your phone, browser, and email can actually display. Pick a target format and quality, and the ARW is demosaiced and rendered on our servers.

How to Convert an ARW File

1. Upload Your ARW File: Drag and drop your Sony raw files or click "Add Files". Batch is supported — drop in a folder of .arw shots from a shoot and each one converts in parallel, then download them together as a ZIP.
2. Pick an Output Format: Choose the target from the format dropdown — JPG for sharing and web, PNG for a lossless flat copy, TIFF for an editable 8/16-bit master, WebP or AVIF for the smallest modern web files, or BMP, GIF, HEIC, and more.
3. Set Quality, Resolution, and DPI (Optional): Leave Quality Preset on "Very High (Recommended)" or drop it to Medium/Low to shrink the file; switch to Specific file size to cap the output at an exact MB target. Under Image resolution, keep the camera's full resolution, choose a Preset Resolution (4320p down to 360p), scale by percentage, or enter a custom Width × Height with aspect locked. For TIFF, set the DPI (300 for print, 72 for web).
4. Convert and Download: Click Convert. Files are uploaded over an encrypted connection, processed on our servers, and deleted automatically after a few hours — no sign-up, no watermark, never shared.

Popular ARW Conversions

• ARW to JPG — the everyday export for sharing, web, and email
• ARW to PNG — a lossless flat copy with no JPEG artifacts
• ARW to TIFF — an 8/16-bit master for editing in Photoshop or GIMP
• ARW to WebP — smaller modern web files at JPG-like quality
• ARW to PDF — drop a photo into a document or contact sheet
• ARW to HEIC — Apple's compact format for the Photos library

Why Convert an ARW File?

An ARW file is not a picture in the usual sense — it is a digital negative. Instead of a finished image, it stores the raw signal read off your Sony camera's sensor (typically 12- or 14-bit per channel), undemosaiced and with no white balance, contrast curve, or sharpening baked in. That is exactly what makes RAW valuable for editing: there is far more latitude to recover blown highlights and lift shadows than a JPEG can offer. It is also what makes ARW awkward to use directly. The format is proprietary to Sony, based on the TIFF/EP structure with Sony-specific Makernote fields, so a web browser, a phone gallery, a Word document, or a stranger's computer generally can't open it. Converting renders the raw sensor data into a standard image everything understands. Common reasons people convert away from ARW:

• Sharing and uploading (JPG) — Most websites, social platforms, email clients, and messaging apps don't accept ARW at all, and even where they do, the file is huge. Converting ARW to JPG demosaics the raw data and applies a standard tone curve, producing a normal photo a few MB in size that uploads anywhere. This is the most common ARW conversion by far.
• A lossless flat copy (PNG / TIFF) — When you want the rendered image without JPEG's lossy artifacts — for a logo overlay, a print, or further editing — PNG and TIFF both store the result without re-compression loss. TIFF additionally supports 16-bit depth, so it preserves more of the ARW's tonal range than an 8-bit PNG or JPG; it is the usual choice for a master file you'll keep editing.
• Modern web delivery (WebP / AVIF) — For a portfolio or product page, WebP and AVIF land meaningfully smaller than an equivalent JPG at the same perceived quality. WebP is supported in Chrome, Firefox, Edge, and Safari 14+; AVIF in Chrome, Firefox, and Safari 16.4+ — so a JPG fallback is still common for the widest reach.
• Opening on a computer with no raw support — If Photoshop, Lightroom, or Capture One isn't installed, the file may simply refuse to open. On Windows you can add Microsoft's free Raw Image Extension to view ARW in Photos; macOS Preview reads many Sony files natively; Sony's own Imaging Edge handles all of them. But the universal fix is to convert to JPG or TIFF once and never think about codecs again.
• Freeing up storage — A single uncompressed ARW from a high-resolution Alpha body can run 40–120 MB. A folder of them fills a card or drive fast. Once you've finished editing, converting your keepers to JPG (or archiving them as compressed TIFF) reclaims most of that space, and a JPG export at high quality is indistinguishable from the raw render for viewing and printing.
• Putting a photo in a document (PDF) — To drop a shot into a report, a contact sheet, or a portfolio handout, ARW to PDF renders the raw image straight onto a page; to combine several into one document, merge ARW to PDF stacks them in order.

ARW Format at a Glance

Choosing an Output Format for an ARW

Frequently Asked Questions

What program opens an ARW file?

Dedicated raw editors open ARW natively: Adobe Lightroom and Camera Raw, Capture One (which has Sony-specific profiles), and the free RawTherapee and darktable. For just viewing, Windows users can install Microsoft's free Raw Image Extension to see ARW thumbnails and previews in the Photos app, macOS Preview reads many Sony raw files out of the box, and Sony's own Imaging Edge Desktop handles every Alpha body. If none of those are available, converting the ARW to JPG or TIFF once gives you a file that opens everywhere with no special software.

Will I lose image quality converting ARW to JPG?

You convert from a 12- or 14-bit raw negative to an 8-bit JPEG, so technically yes — the editing latitude (the ability to recover highlights and shadows after the fact) is gone, because the tone curve is now baked in. But for viewing, sharing, and printing, a high-quality JPG export is visually indistinguishable from the rendered raw. The practical advice: do any exposure or white-balance edits while the file is still raw, then export to JPG as the final step. If you want a lossless rendered copy you can still edit, choose TIFF (16-bit) or PNG instead.

Why is my ARW file so large?

ARW stores the full sensor readout — every photosite at 12 or 14 bits — rather than a compressed finished image, so a single file from a high-resolution Alpha body commonly runs 40–120 MB. Sony cameras offer three RAW File Type settings that change this: Uncompressed (largest), Compressed (a lossy mode roughly half the size of uncompressed), and Lossless Compressed (smaller than uncompressed with no quality loss, available on newer bodies like the A1, A7R V, and A7 IV). Converting your keepers to JPG after editing reclaims most of the space.

Does converting ARW to TIFF keep the 14-bit data?

It keeps as much as TIFF can hold, which is up to 16 bits per channel — so a 16-bit TIFF preserves the full tonal depth of a 14-bit ARW with headroom to spare, unlike an 8-bit JPG or PNG. That is why TIFF is the standard choice for an editing master or archival copy. Note that converting still demosaics and renders the raw — the result is a finished image, not the editable Bayer mosaic, so set white balance and exposure before converting if you want them right.

Can I convert a whole folder of ARW files at once?

Yes. Drop in multiple .arw files and each one is rendered in parallel using the same output format and quality settings, then you download them together as a single ZIP — handy for exporting a full shoot. There's no fixed limit on how many you can queue. In our testing, a typical 24-megapixel Sony ARW exports to a high-quality JPG of roughly 6–9 MB; very large batches simply take longer to upload, since the raw files are big.

What's the difference between ARW and DNG?

ARW is Sony's proprietary raw format, readable in full only by software that specifically supports Sony cameras. DNG (Digital Negative) is Adobe's open, documented raw format designed as a universal archival container — many photographers convert ARW to DNG so their negatives stay openable decades from now without depending on Sony's tooling. Both are raw negatives that still need rendering to a standard image (JPG, TIFF, etc.) before most software can display them; DNG just trades a Sony-specific wrapper for a vendor-neutral one.

Is there a file size limit for converting an ARW?

There's no fixed per-file cap. Conversion runs on our servers, so the real constraint is upload size and your connection speed — a 100 MB uncompressed ARW takes longer to upload than a compressed one, but converts fine. Batch jobs have no quantity limit either; queue a whole shoot and download everything as one ZIP. If you're on a slow connection, converting in smaller batches keeps each upload quick.