Batch Export Queue

Export multiple PDFs to PNG sequentially, ZIP with subdirectories.

PDF parsing and export is done locally in your browser; files are not uploaded to any server.

Phase 2: batch queue + Worker rendering (when supported)

If OffscreenCanvas is supported, rasterization runs in a Worker to reduce UI jank; otherwise it falls back to the main thread with chunking.

Add PDFs to queue (multi-select, drag multiple times)

Queue is empty.