# Film Negative Scanner & C-41 Inverter (filmnegativescanner.online)

> In-browser 3-in-1 film negative scanner, calibrated 5500K daylight lightbox, and real-time WebGL 2.0 C-41 color positive inversion engine.

## Core Utilities & Tools
- [Universal 3-in-1 Scanner (Homepage)](https://filmnegativescanner.online/): Master workbench with file dropzone, live WebRTC camera scanner, and 5500K screen lightbox pad.
- [DIY Screen Lightbox & Anti-Moiré Tool](https://filmnegativescanner.online/how-to-scan-negatives-without-a-scanner/): Turns any tablet, laptop, or phone screen into a daylight-balanced 5500K light table with an interactive spacer elevation calculator.
- [Live Phone Camera Scanner](https://filmnegativescanner.online/scan-negatives-with-phone/): Point smartphone camera at backlit negatives to view real-time 60fps C-41 positive conversions with zero app installation.
- [Photometric Inversion Studio](https://filmnegativescanner.online/film-negative-inverter-online/): Digital darkroom with 1-click orange mask rebate eyedropper and 52 analog film emulsion curves.

## Technical Documentation & Privacy
- [Optical Density & Color Science Methodology](https://filmnegativescanner.online/about-methodology/): Mathematical derivations of transmission density D = -log10(T) and GLSL shader specifications.
- [100% Client-Side Privacy Policy](https://filmnegativescanner.online/privacy-policy/): Confirmation that all WebGL operations execute locally in GPU/RAM with zero cloud photo uploads.
- [HTML Sitemap Directory](https://filmnegativescanner.online/sitemap/): Complete canonical route inventory.