LuttieRAW Photo Editor — Open and Grade RAW Files in Your Browser
Forget the Lightroom subscription. Luttie decodes Sony ARW, Canon CR2 and CR3, Nikon NEF, DNG, and RAF files entirely in your browser. It reads EXIF metadata, offers white balance presets, and automatically suggests the right LUT pack for your camera's color profile — S-Log3 for Sony, D-Log M for DJI, and more.
Every major RAW format, decoded in the browser.
Includes S-Log2 / S-Log3 profiles
EOS R series and DSLR supported
Including Z-series cameras
Universal RAW container
Including X-Trans sensor cameras
D-Log M LUT suggestions included
More than just file decoding.
Full RAW decode in the browser
Luttie uses WebAssembly to decode your RAW files entirely in the browser — no upload, no server processing. Your original files stay on your device.
EXIF metadata display
Camera model, ISO, aperture, shutter speed, focal length — Luttie reads all EXIF data from your RAW file and displays it alongside your image.
White balance presets
Quickly dial in Daylight, Cloudy, Tungsten, Fluorescent, Flash, or custom Kelvin values before color grading — just like Lightroom's WB panel.
Camera-aware LUT suggestions
Shoot with a Sony? Luttie sees your EXIF model string and suggests S-Log3 LUT packs. DJI drone footage? D-Log M. The right starting point, automatically.
Frequently asked questions
Can I edit RAW files without Lightroom?
Yes. Luttie decodes RAW files directly in your browser using WebAssembly — no Lightroom, Photoshop, or any other software required. Open your ARW, CR2, NEF, DNG, or RAF file, adjust the white balance and color grade, and export a .cube LUT you can use in DaVinci Resolve or Premiere Pro.
What RAW formats does Luttie support?
Luttie supports Sony ARW, Canon CR2 and CR3, Nikon NEF, Adobe DNG (including DJI drone footage), and Fujifilm RAF. Support continues to expand — if your format isn't listed, try a DNG export from your camera's companion app, which most cameras support.
Does Luttie read EXIF data from RAW files?
Yes. Luttie extracts camera model, ISO, aperture, shutter speed, focal length, and color profile information from your RAW file's EXIF metadata. This data is displayed in the editor and is also used to power camera-aware LUT suggestions — so if you're shooting Sony S-Log3, Luttie knows to suggest the appropriate LUT pack.
What is a camera-aware LUT?
A camera-aware LUT is a color transformation designed specifically for a particular camera's color science or log profile. For example, S-Log3 footage from a Sony camera needs a specific LUT to convert it from a flat, low-contrast log image to a natural-looking grade. Luttie reads your camera model from EXIF and automatically suggests the matching conversion LUT so you start from the right baseline.
Grade your RAW files — no Lightroom needed.
Free to use. Your files never leave your device.
Open a RAW file in Luttie