ARW to JXL Converter
FileFlip converts ARW to JXL entirely inside your browser, using ImageMagick compiled to WebAssembly. The file is never uploaded to a server: it is read off your disk, converted on your own machine, and saved back by the browser. That means no file-size limit, no queue and no account.
How do I convert an ARW file to JXL?#
- Drop your ARW file onto the converter at the top of this page, or click it to pick one from your computer. You can add as many as you like.
- Leave the target set to JXL and the conversion starts on its own. FileFlip downloads 14.1 MB of WebAssembly the first time and nothing after that, then runs ImageMagick on your own machine.
- Save the JXL file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting ARW to JXL lose quality?#
It depends on what is inside the file. ARW is a container rather than a codec, so whether the JXL conversion copies the streams across untouched or re-encodes them is decided by the codecs that particular file happens to use.
Is it safe to convert ARW files online?#
Yes, because nothing is uploaded. FileFlip converts ARW files inside the browser tab you already have open, using WebAssembly builds of the same engines a desktop converter would install. Your file is read from your own disk into the page's memory, and no request carrying it is ever made.
You do not have to take that on trust. Open your browser's network panel, run a conversion, and you will see the engine come down and your file go nowhere. There is no upload, no server-side copy, no retention window, and no account tied to what you converted.
How FileFlip works lists every engine, its version and its download size, and shows how to check for yourself that nothing leaves your machine.
What ARW to JXL actually does to the file#
Converting ARW to JXL runs on ImageMagick, downloads 14.1 MB of WebAssembly the first time and nothing after that, re-encodes or copies through depending on the codecs in the file.
| Engine | ImageMagick |
|---|---|
| Conversion path | One step: ARW → JXL |
| Downloaded to your browser | 14.1 MB, once, then cached by your browser |
| Quality | Decided by the codecs inside the file |
| You get back | One file |
| Where it runs | In a background worker, so the page stays responsive |
Worth knowing before you start:
- camera raw is demosaiced with ImageMagick's defaults, which will not match the camera's own rendering
- some cameras write lossily compressed raw, so the source is not always a complete sensor record
What is an ARW file?#
An ARW file stores raw sensor data in Sony's current TIFF-based raw format, introduced in 2006 with the Alpha DSLR-A100 and used by every Alpha DSLR, SLT and mirrorless camera Sony has released since, replacing the short-lived SR2 format Sony had used on cameras like the Cyber-shot DSC-R1.
ARW is what every current Sony Alpha or mirrorless camera writes automatically, so choosing between uncompressed and compressed ARW in the camera's menu is the only real decision.
Convert ARW to JPEG for sharing and printing, or to DNG when a particular piece of software hasn't yet added support for a brand-new Sony camera body.
What is a JXL file?#
A JXL file stores an image under the JPEG XL coding system, a format built to losslessly repackage an existing JPEG into a smaller file or to encode a new photo at higher quality per byte than JPEG, WebP or AVIF.
Use JPEG XL for archiving and photo libraries where you want smaller files than JPEG without giving up the option to reconstruct the original JPEG exactly, especially once Chrome and Firefox finish rolling out default decoding.
Convert JXL to JPEG or PNG for anything going on the web today, since most browsers still require a manual flag to display JPEG XL directly.
ARW to JXL questions people ask#
What software opens ARW files?
Sony's own Imaging Edge Desktop opens ARW files, as do Adobe Photoshop, Lightroom and Camera Raw, Capture One, and open-source tools like darktable and RawTherapee. ARW is Sony's current raw format, so support is broad across both paid and free raw processors.
Does converting ARW to DNG lose quality?
No, converting an ARW file to DNG keeps the same sensor data, since DNG conversion doesn't re-render the image. A small amount of Sony-specific metadata can be lost in the conversion, but not image quality.
Should I shoot compressed or uncompressed ARW?
Uncompressed ARW avoids Sony's lossy 11+7 bit delta compression, which can visibly posterize smooth gradients like skies under some conditions, at the cost of a larger file. Sony's lossless-compressed option is a middle ground that shrinks the file without that risk.
Which Sony camera first used ARW?
The Alpha DSLR-A100, Sony's first Alpha-branded DSLR, introduced ARW in 2006, replacing the SR2 format Sony had used on earlier cameras like the Cyber-shot DSC-R1. Every Alpha DSLR, SLT and mirrorless camera Sony has released since has written ARW, making it the only raw format across the current Alpha and RX lines.