PDFFORGE

PDFFORGE

Rearrange · Reflow · Render

📄

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Real PDF rendering via PDF.js

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Cols × Rows 4 per sheet

Orientation

Memory: Each <Page> canvas ≈ width × height × 4 bytes (~110 KB at 140 px). Fine to ~50 pages; beyond that use react-window to virtualize off-screen canvases. Threading: pdfDoc.save() blocks the main thread on large files — offload to a Web Worker via postMessage(buffer, [buffer]) for zero-copy transfer.