(Node.js) PDF File Encoding to Base64

Demonstrates how to encode a PDF file to base64, and then decode.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOS

var os = require('os');
if (os.platform() == 'win32') {  
  var chilkat = require('@chilkat/ck-node23-win64'); 
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node23-linux-arm');
    } else if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node23-linux-arm64');
    } else {
        var chilkat = require('@chilkat/ck-node23-linux-x64');
    }
} else if (os.platform() == 'darwin') {
  var chilkat = require('@chilkat/ck-node23-mac-universal');
}

function chilkatExample() {

    var pdfData = new chilkat.BinData();

    var success = pdfData.LoadFile("qa_data/helloWorld.pdf");
    if (success !== true) {
        console.log("failed to load PDF file.");
        return;
    }

    // Encode the PDF to base64
    // Note: to produce base64 on multiple lines (as it would appear in the MIME of an email),
    // pass the string "base64_mime" instead of "base64".
    var b64 = pdfData.GetEncoded("base64");
    console.log(b64);

    // Decode from base64 PDF.
    var pdfData2 = new chilkat.BinData();
    pdfData2.AppendEncoded(b64,"base64");
    success = pdfData2.WriteFile("qa_output/helloWorld2.pdf");
    if (success !== true) {
        console.log("failed to write PDF file.");
        return;
    }


}

chilkatExample();