Convert RAW film negative scans to positives without uploading them.
Negative Converter is a free browser-based RAW negative converter for camera-scanned film. It handles CR2, CR3, NEF, ARW, DNG, RW2, and 16-bit PNG files locally, then exports finished positives as PNG, JPEG, or TIFF.
What is a RAW film negative converter?
A RAW film negative converter decodes camera-scanned RAW files, inverts the negative, neutralizes the color negative orange mask, and lets you finish white balance and color before export. Negative Converter does this in your browser, so the RAW file stays on your device.
This workflow is useful when you digitize 35mm or medium format film with a DSLR, mirrorless camera, copy stand, macro lens, or film holder. Instead of exporting a JPEG first, you can start from the camera RAW file and keep more tonal headroom.
Supported RAW and scan formats
| Format | Common source | Use case |
|---|---|---|
| CR2 / CR3 | Canon DSLR and mirrorless cameras | Camera-scanned color or B&W negatives |
| NEF / NRW | Nikon DSLR and Z cameras | Nikon RAW film scanning workflows |
| ARW | Sony Alpha cameras | High-resolution mirrorless film scans |
| DNG | Adobe DNG, Leica, Pentax, iPhone ProRaw | Generic RAW and phone-based film scanning |
| RW2 | Panasonic Lumix cameras | Camera-scanned negatives from Panasonic bodies |
| PNG / TIFF / JPEG | Flatbed scanners and exported scans | Scanner files and edited intermediates |
How to convert a RAW negative online
- Open Negative Converter and choose your RAW file or folder of film scans.
- Crop to the film frame and use Auto Frame if the border is visible.
- Choose Color Negative, B&W Negative, or Positive mode.
- For color negative film, sample the orange mask manually, use auto detection, or reuse a roll reference.
- Adjust white balance, temperature, tint, saturation, vibrance, and CMY balance.
- Export as PNG, JPEG, TIFF, or a batch ZIP.
Why local browser processing matters
Film scans are often large and personal. Negative Converter uses WebAssembly modules for RAW decoding and image processing, so image data is processed on the device instead of being uploaded to a server. That makes it practical for private family archive work, test rolls, and shared computers.