PRIVACY POLICY // ZERO PAYLOAD STORAGE

Effective Date: November 2026 • 100% Browser-Contained Architecture

[ ARCHITECTURAL CORE: 100% IN-MEMORY CLIENT-SIDE EXECUTION ]

All color conversions, WCAG contrast calculations, CSS gradient and shadow rules, and image palette extractions execute strictly inside your local browser runtime memory (JavaScript V8 / Web APIs / HTML5 Canvas). Your source images, color codes, design tokens, and exported palettes are NEVER uploaded to backend servers, NEVER written to disk, and NEVER shared with any third party.

1. Information We Never Collect

We do NOT transmit or record your uploaded image files or extracted pixel data.
We do NOT retain your color palettes, gradients, or generated CSS rules.
We do NOT access or store device camera streams, photos, or file system directories.
We do NOT track or store design systems, brand identities, or hex configurations.
We do NOT use persistent profiling cookies, session cookies, or ad trackers.

2. Anonymous Telemetry & Operational Metrics

To monitor infrastructure health, prevent denial-of-service abuse, and verify operational uptime, our backend accepts lightweight, anonymous telemetry metrics via non-blocking background beacons:

Action: The tool function triggered (e.g., convert, contrast_check, gradient, shadow_gen, palette_extract).
Format: The format selector used (e.g., hex, rgb, hsl, css, json). Zero image data, pixel arrays, or design content are ever transmitted.
Client IP Address: Captured from edge reverse-proxy headers (Cloudflare CF-Connecting-IP / X-Forwarded-For) strictly for rate-limiting and DDoS mitigation.

3. Client-Side HTML5 Canvas Isolation

When using the Image Color Palette Extractor, selected files are read exclusively into an ephemeral offscreen HTML5 <canvas> element created in volatile browser memory. Pixel quantization occurs entirely on your device's CPU/GPU. Closing or reloading the tab immediately frees all allocated memory.

4. Contact & Inquiries

For security, audit, or architectural compliance questions regarding Color & CSS Studio, contact: security@hamtruyen.top.