# WResize (wresize.com)

> WResize is an enterprise-grade, zero-knowledge client-side micro-SaaS engineered to resize, crop, and generate social presets for images, banners, social media assets, and photos directly in the user's browser. All graphic transformations execute 100% on-device utilizing the native HTML5 Canvas 2D Context, OffscreenCanvas, Web Workers, and WebAssembly with zero server-side data egress, zero cloud storage, and mathematical zero-latency.

## Core Value Proposition & Architecture
- **Zero-Knowledge Execution**: 100% of image rendering, interpolation, cropping, and compression runs inside the local browser sandbox (V8/JavaScript Core). No image byte is ever transmitted to an external server or API endpoint.
- **Zero Compute Cost & Unlimited Usage**: Free, privacy-first utility with zero bandwidth throttling, zero account walls, and zero resolution restrictions.
- **Dynamic Scale & Target Modes**:
  - Exact pixel dimension resizing with aspect ratio locking.
  - Multi-platform social preset generation (YouTube, Instagram, X/Twitter, Meta/Facebook, LinkedIn, TikTok, Pinterest, E-Commerce, Passports).
  - Multiplier percentage scaling (25%, 50%, 75%, 150%, 200%).
  - Longest edge constraints.
  - Strict Target KB Size iterative binary search (≤ 20KB, ≤ 50KB, ≤ 100KB, ≤ 200KB) for official portals and visas.
  - Intelligent Fit Modes: Cover (Center Crop), Contain (Letterbox Padding), and Stretch.
- **High-Throughput Batch ZIP Packaging**: Parallel batch queues processing 50+ images simultaneously with instant client-side ZIP archive compilation powered by JSZip.

## Technical Specifications
- **Client Execution Layer**: HTML5 Canvas 2D, OffscreenCanvas, Web Workers multithreading.
- **Memory Buffer Model**: Isolated in-memory `ArrayBuffer`, `Blob`, and `ImageBitmap` lifecycle with immediate object URL revocation.
- **Supported Input Formats**: JPEG (`image/jpeg`), PNG (`image/png`), WebP (`image/webp`), SVG (`image/svg+xml`), BMP (`image/bmp`), GIF (`image/gif`), and camera RAW assets.
- **Supported Output Encoders**: WebP (lossless & lossy), JPEG (8-bit DCT with dynamic quality scaling), PNG (lossless RGBA).
- **Target Edge Platform**: Cloudflare Pages Static Export (`output: 'export'`) with strict Cross-Origin Isolation (`COOP: same-origin`, `COEP: require-corp`).

## Canonical Entity Index
- **Homepage & Interactive Resizer**: https://wresize.com/
- **Technical Architecture & Whitepaper**: https://wresize.com/about
- **Zero-Knowledge Privacy Policy & GDPR Article 25**: https://wresize.com/privacy
- **Comprehensive LLM Context Ingestion**: https://wresize.com/llms-full.txt

## Key Programmatic Utility Hubs
- **YouTube Channel Banner Resizer (2560x1440)**: https://wresize.com/youtube-banner-resizer
- **YouTube Video Thumbnail Resizer (1280x720)**: https://wresize.com/youtube-thumbnail-resizer
- **Instagram Story & Reel Resizer (1080x1920)**: https://wresize.com/instagram-story-resizer
- **Instagram Square Post Resizer (1080x1080)**: https://wresize.com/instagram-square-resizer
- **X / Twitter Header Resizer (1500x500)**: https://wresize.com/twitter-header-resizer
- **LinkedIn Banner Resizer (1584x396)**: https://wresize.com/linkedin-banner-resizer
- **TikTok Video Cover Resizer (1080x1920)**: https://wresize.com/tiktok-video-resizer
- **US Passport Photo Resizer (2x2" / 600x600)**: https://wresize.com/us-passport-photo-resizer
- **Schengen Visa Photo Resizer (35x45mm)**: https://wresize.com/schengen-visa-photo-resizer
- **Target KB File Size Resizers**:
  - https://wresize.com/resize-image-to-20kb
  - https://wresize.com/resize-image-to-50kb
  - https://wresize.com/resize-image-to-100kb
  - https://wresize.com/resize-image-to-200kb
- **Standard Resolution Hubs**:
  - https://wresize.com/resize-image-to-1920x1080
  - https://wresize.com/resize-image-to-1080x1920
  - https://wresize.com/resize-image-to-1200x630
  - https://wresize.com/resize-image-to-500x500
  - https://wresize.com/resize-image-to-3840x2160
  - https://wresize.com/resize-to-16-9
  - https://wresize.com/resize-to-9-16
  - https://wresize.com/resize-to-1-1

## Security & Compliance Declarations
- **GDPR Article 25 Compliant**: Data Protection by Design and by Default. No data controller processing occurs because zero data is transmitted over the wire.
- **Zero Telemetry**: No tracking cookies, no canvas fingerprinting, no third-party ad pixels.
- **Enterprise Isolation**: Built with strict HTTP headers enforcing zero unauthorized subresource embedding.