Base64_Encode_Decode created by NatashaKSS - https://repl.it/Iulp/16

Base64_Encode_Decode.js

var BASE64_URL = require('base64url');

/**
 * Sometimes, you need a way to quickly decode Base-64 formatted URLs into a human-editable format. 
 * 
 * Here's a short script that decodes base64 URLs and prints the decoded result onto the console.
 */

// Step 1: Enter your base URL here. E.g. it can be "https://localhost:3000" or "http://www.mysite.com"
var baseURL = ""; //TO EDIT

// Step 2: Copy & paste the base64 encoded query params located at the back of your URL (after the first '?')
var query = ""; // TO EDIT
console.log("=== The Decoded Query ===")
console.log(BASE64_URL.decode(query));

// Step 3: Copy & paste what was printed in the decoded query here & change the params to whatever you want
var queryToEncode = ""; // TO EDIT
console.log("\n\n=== The Re-encoded URL ===")
console.log(baseURL + "?" + BASE64_URL.encode(queryToEncode));

// Step 4: Copy the encoded URL from the console. DONE!