Overview
A privacy-first PDF tool designed for performance. Processes documents entirely in the browser using GPU-accelerated rendering, ensuring sensitive data never leaves the user's device.
The Challenge
The initial implementation suffered from performance bottlenecks during zoom operations due to CPU-heavy re-rendering. Additionally, implementing a 'Transparent Signature' feature from raw camera input without server-side processing required complex pixel manipulation logic.
The Solution
I architected a custom rasterization pipeline that converts PDF viewports into high-resolution static assets, offloading rendering tasks to the GPU for butter-smooth zooming. For signatures, I built a luminance-detection algorithm to isolate and extract strokes instantly on the client side.
Key Features
- 100% Client-Side (Zero Server Latency)
- GPU-Accelerated Zoom & Pan
- Auto-Transparent Signature Algorithm
- Smart History API (Undo/Redo)
- Auto-Transparent Signature
- PWA Offline Capable & Share Target API
Technologies
Vue 3ViteKonvapdf-libIndexedDB