RAF to ICO Converter
Convert RAF to ICO in your browser. The JPEG preview is converted, and it already carries the Film Simulation (Provia, Velvia, Classic Chrome and so on) chosen in camera. No raw development happens here. You get a multi-size ICO with PNG-compressed icons (16, 32, 48 and 256 px by default). Nothing is uploaded.
- Processed locally
- No upload, no wait
- No sign-up
- No watermark
Drop images here
or choose files · paste with Ctrl/⌘ V
RAW expected · other image formats also work
How to use RAF to ICO
- 1
Add your RAF files: drop them here, choose them, or paste from the clipboard.
- 2
Choose the icon sizes to include.
- 3
Click Convert. Each file is decoded and encoded in a background thread on this device.
- 4
Download the .ico files one at a time or together as a ZIP.
Why use Aback Images for raf to ico
Where the ICO goes next
ICO opens in every browser (as a favicon), Windows and most Linux desktops.
ICO next to RAF
The ICO holds the camera preview's pixels with lossless compression: usually smaller than a 20 to 60 MB raw file, though far larger than a JPEG of the same photo.
No new artefacts
The preview inside the RAF is a camera JPEG; the ICO stores its decoded pixels losslessly, so this step adds no compression damage of its own.
Processed on your device
Your images are decoded, edited and encoded inside this browser tab by Web Workers. Nothing is uploaded to a server.
RAF vs ICO
What changes from RAF to ICO
Encoding: the RAF uses uncompressed or lossless compressed sensor data in Fujifilm's own container; ICO uses each size stored as a headerless BMP or as a complete PNG, and the download is a multi-size ICO with PNG-compressed icons (16, 32, 48 and 256 px by default).
Bit depth: 12 to 16 bits per channel depending on the camera in the RAF; ICO allows 1 to 32 bits per pixel, set per size, and the ICO written here has 32 bits per pixel. The sensor's 12 to 16 bits are not used: the 8-bit camera preview is converted.
Colour: camera RGB from an X-Trans 6×6 or Bayer 2×2 mosaic in the RAF; ICO supports RGB or a palette, per image, written here as 8-bit sRGB.
Metadata: the RAF can carry EXIF and Fujifilm maker notes, including the Film Simulation; ICO can carry only a directory of the sizes inside, with no EXIF, but nothing is copied across.
About RAF
RAF is the raw format of Fujifilm cameras, from the X series to the medium-format GFX. Most X-series bodies use an X-Trans sensor with a 6×6 colour filter pattern instead of the usual Bayer 2×2.
RAF is not TIFF at the top level: it opens with the text 'FUJIFILMCCD-RAW', then a header with the camera model and offsets to three blocks: a JPEG preview near the start of the file, a header describing the sensor layout, and the sensor data.
RAF files usually come from Fujifilm X-T, X-H, X-S, X-E, X100 and GFX cameras.
About ICO
ICO is a container that bundles several sizes of the same icon (16, 32, 48, 256 px) into one file. It is still the most compatible format for website favicons and Windows app icons.
An ICO starts with a 6-byte ICONDIR (type 1 for icons) and a 16-byte entry per image giving width, height, colour count and offset. Each image is either a BMP without its file header plus an AND mask, or a complete PNG.
When converting RAF to ICO makes sense
ICO is the better choice for favicons and Windows icons, while RAF suits editing Fujifilm photos in a raw developer.
ICO strengths: Multiple sizes in one file; Required by Windows and supported by every browser as a favicon. Drawbacks to weigh: Max 256×256 per image; Not for photos.
Limitations
- X-Trans sensor data is never demosaiced here, so none of the artefacts some raw developers produce from it appear.
- Each size inside the ICO is scaled from your image, and detailed artwork loses legibility at 16 and 32 px, so simplify logos first.
- Non-square images are centred on a transparent square for each icon size.
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Frequently asked questions
Does converting RAF to ICO lose quality?
ICO is written losslessly, so the pixels are stored exactly as decoded. Those pixels come from the camera's JPEG preview, so its compression stays, but nothing new is lost. The sensor's 12 to 16 bits are not used: the 8-bit camera preview is converted.
Which icon sizes are included?
16, 32, 48 and 256 px by default, the set Windows and browsers expect. You can choose other sizes. Non-square images are centred on a transparent square.
Which apps open ICO files?
Every browser (as a favicon), Windows and most Linux desktops.
Are my images uploaded anywhere?
No. Processing happens inside your browser with WebAssembly and Web Workers. The site only downloads the app code and codecs; your files never leave your device. You can confirm this with the live upload counter on the tool, or in your browser's network panel.
Can I process many files at once?
Yes. Drop a whole selection or folder. Files are processed in parallel on several worker threads, each result can be downloaded on its own, and everything can be saved as one ZIP.
Is it free? Is there a file limit or watermark?
It is free with no account, no watermark and no daily limit. The only limit is your device's memory: very large images (over roughly 100 megapixels) may be refused to keep the tab from crashing.