Node.js 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. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  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

    var pdf = new chilkat.Pdf();

    //  Removing the encryption needs owner rights: load with the owner password.
    pdf.OwnerPassword = "owner-secret";
    success = pdf.LoadFile("qa_data/pdf/encrypted_user_password.pdf");
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    var json = new chilkat.JsonObject();
    var jsonOut = new chilkat.JsonObject();
    success = pdf.Protection("getInfo",json,jsonOut);
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    console.log("encrypted, as loaded: " + jsonOut.BoolOf("loaded.encrypted"));
    console.log("algorithm: " + jsonOut.StringOf("loaded.algorithm"));

    success = pdf.Protection("removeEncryption",json,jsonOut);
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    console.log("will be saved encrypted: " + jsonOut.BoolOf("pending.encrypted"));

    success = pdf.WriteFile("qa_output/minutes_unprotected.pdf");
    if (success == false) {
        console.log(pdf.LastErrorText);
        return;
    }

    //  The result is an ordinary PDF that opens without a password.
    var reader = new chilkat.Pdf();
    var info = new chilkat.JsonObject();
    success = reader.PreLoadCheck("qa_output/minutes_unprotected.pdf",info);
    if (success == false) {
        console.log(reader.LastErrorText);
        return;
    }

    console.log("encrypted: " + info.BoolOf("encrypted"));
    success = reader.LoadFile("qa_output/minutes_unprotected.pdf");
    if (success == false) {
        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

}

chilkatExample();