Server-Side Usage (Node.js)

The PDF SDK is designed to work seamlessly in Node.js environments for server-side processing.

Setup

Ensure you have the package installed:

npm install @avanquest/pdf-web-viewer
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Example Workflow

Here is a complete example of a server-side function that processes a PDF.

import { PdfSdk } from '@avanquest/pdf-web-viewer/sdk';
import fs from 'fs';

async function processServerSidePDF() {
  /* Initialize SDK */
  await PdfSdk.initialize({
    license: process.env.PDF_LICENSE_KEY,
    workerPath: '/path/to/pdfworker.js',
  });

  try {
    /* Read file from disk */
    const filePath = '/uploads/document.pdf';
    const buffer = fs.readFileSync(filePath);

    /* Create File object (Node.js 20+ or polyfill required) */
    const file = new File([buffer], 'document.pdf', { type: 'application/pdf' });

    /* Open document */
    const document = await PdfSdk.openDocument({ file });

    console.log(`Processing document: ${document.id}`);

    /* Perform operations */
    await document.deletePages({
      range: [0] /* Remove the first page */,
    });

    /* Save the result */
    const result = await document.exportDocument({
      as: 'uint8array',
    });

    /* Clean up */
    await document.dispose();

    return result;
  } catch (error) {
    console.error('Server-side processing failed:', error);
    throw error;
  }
}
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Considerations

• Worker Path: In a Node.js environment, ensure the workerPath points to a valid location where the worker script can be accessed or loaded.
• File Access: The SDK can handle file paths or URLs depending on your setup.
• Resource Management: Always call closeFiles to prevent memory leaks on the server.