Rendering High-DPI Vector Graphics to Canvas
When rendering PDF pages to HTML5 canvas elements for interactive previews, naïve implementations consume gigabytes of RAM.DocZen Performance Optimizations:
- OffscreenCanvas: Renders pages in secondary background threads without blocking main UI interactions. - Viewport Virtualization: Only renders thumbnails visible in the user's active viewport scroll frame. - Canvas Context Recycling: Reuses allocated canvas memory contexts during rapid pagination.Test smooth rendering performance across all tools on DocZen PDF.