React Native Requires Chilkat v11.7.0+

Remove the Password and Encryption from a PDF

See more PDF Protection Examples

Demonstrates the removeEncryption operation, which saves the PDF with no encryption at all: no password, no restrictions. It needs owner rights, so the PDF is loaded with its owner password. As with every Protection operation, the change is applied when the file is written. React Native

import { JsonObject, Pdf } from '@chilkat/react-native'

function chilkatExample() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  // The PDF used in this example is available at encrypted_user_password.pdf

  const pdf = new Pdf();

  // Removing the encryption needs owner rights: load with the owner password.
  pdf.ownerPassword = 'owner-secret';
  try {
    pdf.loadFile('qa_data/pdf/encrypted_user_password.pdf');
  } catch {
    console.log(pdf.lastErrorText);
    return;
  }

  const json = new JsonObject();
  const jsonOut = new JsonObject();
  try {
    pdf.protection('getInfo', json, jsonOut);
  } catch {
    console.log(pdf.lastErrorText);
    return;
  }

  console.log(`encrypted, as loaded: ${jsonOut.boolOf('loaded.encrypted')}`);
  console.log(`algorithm: ${jsonOut.stringOf('loaded.algorithm')}`);

  try {
    pdf.protection('removeEncryption', json, jsonOut);
  } catch {
    console.log(pdf.lastErrorText);
    return;
  }

  console.log(`will be saved encrypted: ${jsonOut.boolOf('pending.encrypted')}`);

  try {
    pdf.writeFile('qa_output/minutes_unprotected.pdf');
  } catch {
    console.log(pdf.lastErrorText);
    return;
  }

  // The result is an ordinary PDF that opens without a password.
  const reader = new Pdf();
  const info = new JsonObject();
  try {
    reader.preLoadCheck('qa_output/minutes_unprotected.pdf', info);
  } catch {
    console.log(reader.lastErrorText);
    return;
  }

  console.log(`encrypted: ${info.boolOf('encrypted')}`);
  try {
    reader.loadFile('qa_output/minutes_unprotected.pdf');
  } catch {
    console.log(reader.lastErrorText);
    return;
  }

  console.log(`pages: ${reader.numPages}`);

  // Sample output:

  // encrypted, as loaded: True
  // algorithm: rc4-128
  // will be saved encrypted: False
  // encrypted: False
  // pages: 1
}