RW2 to ICON Converter
FileFlip converts RW2 to ICON 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 RW2 file to ICON?#
- Drop your RW2 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 ICON 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 ICON file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting RW2 to ICON lose quality?#
No. Converting RW2 to ICON writes the data out again without discarding any of it, so nothing that was in the RW2 file is lost on the way. What changes is the size of the file, not what is inside it.
Is it safe to convert RW2 files online?#
Yes, because nothing is uploaded. FileFlip converts RW2 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 RW2 to ICON actually does to the file#
Converting RW2 to ICON runs on ImageMagick, downloads 14.1 MB of WebAssembly the first time and nothing after that, writes the data out again without discarding any of it.
| Engine | ImageMagick |
|---|---|
| Conversion path | One step: RW2 → ICON |
| Downloaded to your browser | 14.1 MB, once, then cached by your browser |
| Quality | Lossless |
| 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 RW2 file?#
An RW2 file stores unprocessed sensor data from a Panasonic Lumix camera in a TIFF-based container, the raw format Panasonic has used since it started building Micro Four Thirds cameras and still writes across the current Lumix G and S lineups.
Shoot RW2 when a Lumix camera is set to record raw and the goal is to keep full sensor data for exposure and white balance adjustments later.
Convert RW2 once editing is finished and the image needs to go somewhere that doesn't read camera raw, such as a website, a shared album, or a printer.
What is an ICON file?#
ICON is ImageMagick's alternate name for the ICO format, the container Windows uses for small multi-resolution images shown as application, file and shortcut icons, so a file written as ICON is the same Windows icon container as one written as ICO.
Use ICON, or the equivalent ICO, for Windows application icons, favicons and shortcut images, where the file needs to offer several sizes in one container.
Convert to PNG when a single-resolution image is needed for general use, since most software outside Windows icon contexts doesn't expect an ICO/ICON container.
RW2 to ICON questions people ask#
What camera creates RW2 files?
RW2 files come from Panasonic Lumix cameras with the capture format set to RAW, including the Micro Four Thirds G and GH series and the full-frame S series. JPEG is the default on most Lumix bodies, so RAW has to be turned on in the camera menu.
Can Windows open RW2 files without extra software?
Windows only shows RW2 thumbnails and previews after the Raw Image Extension is installed from the Microsoft Store, and even then only Photos and File Explorer use it. Converting to JPG works everywhere without installing anything.
Is RW2 the same as RWL?
RW2 and RWL hold the same kind of Panasonic sensor data in the same TIFF-based structure. Leica uses the RWL extension for the rebadged versions of Panasonic-designed cameras it sells, while Panasonic's own cameras write RW2.
Does converting RW2 to JPG lose image quality?
Converting an RW2 file to JPG applies the raw processing (demosaicing, white balance, tone curve) and then compresses the result, so some of the original sensor data is discarded. The RW2 itself is unaffected by the conversion and keeps every option for reprocessing open.