# Spectral

> Spectral is a privacy-first, 100% client-side RAW photo editor and 3D LUT color grading web application powered by WebGL. It runs entirely inside modern web browsers with zero server uploads, no personal data collection (anonymous page-view analytics only), and no subscriptions.

## Overview
Spectral bridges native desktop performance with web convenience. It allows photographers, content creators, and colorists to develop RAW files, apply cinematic 3D LUTs (.cube files), fine-tune tonal and HSL curves, and export high-quality images directly from their browser while keeping all data strictly on the local device.

## Key Capabilities
- **100% Client-Side Privacy**: Photos and edits never leave the user's browser; all processing happens locally via WebGL and WebAssembly.
- **RAW & Standard Image Support**: Decodes camera RAW formats (.dng, .cr2, .nef, .arw) and standard formats (JPEG, PNG, WebP, AVIF).
- **3D LUT Engine**: Real-time 3D LUT (.cube) parsing and trilinear interpolation on the GPU.
- **Parametric Color & Tone Controls**: Exposure, contrast, highlights, shadows, whites, blacks, temperature, tint, vibrance, saturation, RGB curves, HSL channels, film grain, and split toning.
- **Local Persistence & Offline PWA**: Installable as a Progressive Web App (PWA) with projects saved locally in IndexedDB / OPFS.
- **No Subscriptions**: Free core tier with an optional one-time lifetime Pro license.

## Core URLs & Resources
- [Spectral Web Application](https://spectral.platvlak.com/): Home page and features overview.
- [Spectral Photo Editor](https://spectral.platvlak.com/editor): Direct browser-based photo editing workspace.
- [About & Tech Stack](https://spectral.platvlak.com/about): Mission, local architecture, and privacy philosophy.
- [Changelog](https://spectral.platvlak.com/changelog): Detailed release notes and version history.
- [Community & Recipes](https://spectral.platvlak.com/community): Community film recipes and color presets.
- [Blog & Articles](https://spectral.platvlak.com/blog): Color grading tutorials and photography insights.
- [Privacy Policy](https://spectral.platvlak.com/privacy): Formal explanation of local-only data handling.
- [Terms of Service](https://spectral.platvlak.com/terms): License terms and lifetime access information.

## Optional
- [Full Documentation](https://spectral.platvlak.com/llms-full.txt): Comprehensive reference with architecture details, color pipeline, keyboard shortcuts, and full feature specs.