SRF to ICO Converter
FileFlip converts SRF to ICO 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 SRF file to ICO?#
- Drop your SRF 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 ICO 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 ICO file. Your browser writes it straight to your downloads folder, because there was never a server holding it.
Does converting SRF to ICO lose quality?#
No. Converting SRF to ICO writes the data out again without discarding any of it, so nothing that was in the SRF file is lost on the way. What changes is the size of the file, not what is inside it.
Is it safe to convert SRF files online?#
Yes, because nothing is uploaded. FileFlip converts SRF 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 SRF to ICO actually does to the file#
Converting SRF to ICO 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: SRF → ICO |
| 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 SRF file?#
An SRF file stores raw sensor data from an early Sony Cyber-shot camera such as the DSC-F828, with parts of the file encrypted so that, originally, only Sony's own software could fully decode the white balance and color data.
SRF only exists as the format an old Cyber-shot camera such as the DSC-F828 already wrote; there's no reason to choose it today.
Convert SRF files to DNG or JPEG, since current raw processors have far better support for those than for Sony's original encrypted raw format.
What is an ICO file?#
An ICO file packs several copies of the same picture, each a different pixel size and color depth, into one Windows icon container so the operating system can pick whichever copy fits the taskbar, the desktop, or a File Explorer thumbnail.
Use ICO for Windows application icons, desktop shortcuts, and website favicons, where the operating system or browser needs to choose the right size automatically.
Convert ICO to PNG when the image needs to be edited freely, resized to a size the icon doesn't already contain, or used anywhere other than Windows or a browser favicon.
SRF to ICO questions people ask#
What Sony camera creates SRF files?
SRF files come from early Sony Cyber-shot cameras, most notably the DSC-F828, which was among the first Sony cameras to offer raw capture. Sony moved on to the SR2 and later ARW formats within a few years.
Why do colors look wrong when I open an SRF file?
SRF files from Sony's early Cyber-shot cameras have parts of the file encrypted, including white balance and color data, so software that hasn't worked around that encryption can decode the image but not its correct color rendering.
Can current raw software open SRF files?
Some can. Adobe Camera Raw and Lightroom Classic retain legacy support for SRF, and open-source tools like darktable and RawTherapee decode it through libraries that reverse-engineered Sony's encryption, but support is far thinner than for Sony's current ARW format.
What is an ICO file?
An ICO file is the icon format Windows uses for application icons, desktop shortcuts, and browser favicons. Rather than holding a single picture, it bundles multiple versions of the same image at different pixel sizes and color depths so the system can display whichever one fits the context.