PDF redaction on the server using Apryse Server SDK

script.js

const { PDFNet } = require("@pdftron/pdfnet-node");
const dotenv = require("dotenv");

// Load environment variables
dotenv.config();

// Ensure API key is present
if (!process.env.APRYSE_API_KEY) {
  console.error(
    "Error: APRYSE_API_KEY is not defined in the environment variables."
  );
  process.exit(1);
}

async function applyRedaction(inputFile, outputFile) {
  const doc = await PDFNet.PDFDoc.createFromFilePath(inputFile);
  if (await doc.initSecurityHandler()) {
    const redactionArray = [];

    redactionArray.push(
      await PDFNet.Redactor.redactionCreate(
        2,
        await PDFNet.Rect.init(100, 100, 550, 600),
        false,
        "Top Secret"
      )
    );
    redactionArray.push(
      await PDFNet.Redactor.redactionCreate(
        3,
        await PDFNet.Rect.init(0, 240, 600, 600),
        false,
        ""
      )
    );
    const appearance = {
      redaction_overlay: true,
      border: false,
      show_redacted_content_regions: true,
    };
    PDFNet.Redactor.redact(doc, redactionArray, appearance);

    // Save the redacted PDF
    await doc.save(outputFile, PDFNet.SDFDoc.SaveOptions.e_linearized);
    console.log(`Redacted PDF saved to ${outputFile}`);
  }
}

// Run the script
(async () => {
  const inputFile = "research.pdf";
  const outputFile = "redacted_research.pdf";

  try {
    await PDFNet.runWithCleanup(
      () => applyRedaction(inputFile, outputFile),
      process.env.APRYSE_API_KEY
    );
  } catch (error) {
    console.error("PDFNet initialization error:", error.message);
  } finally {
    await PDFNet.shutdown();
  }
})();