PDF Combinator

1// PDF Combinator - file processing
2// All operations run locally
3 
4async function processPDF(file: File) {
5  // File stays on your device
6  const arrayBuffer = await file.arrayBuffer();
7  
8  // Rendering happens in browser
9  const pdf = await PDFLib.load(arrayBuffer);
10  
11  // Adding annotations locally
12  const page = pdf.getPages()[0];
13  page.drawText('Signature', {
14    x: 50, y: 50,
15    size: 12
16  });
17 
18  // Saving without server upload
19  return pdf.save(); // Stays with you!
20}