JavaScript

Convert any File to Base64 (and back)

Demonstrates how to get the contents of any file as a base64 string, and then write it back.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

JavaScript

var success = false;

var bd = new CkBinData();

// This example will load a PDF and return it as a base64 string.
success = bd.LoadFile("qa_data/pdf/helloWorld.pdf");
if (success !== true) {
    console.log("Failed to load file.");
    return;
}

var b64Str = bd.GetEncoded("base64");
console.log(b64Str);

// Now write the base64 string back to the binary PDF file:
var bd2 = new CkBinData();
success = bd2.AppendEncoded(b64Str,"base64");
success = bd2.WriteFile("qa_output/helloWorld.pdf");