Trying to get my website url not to show in address bar

I have 4 simple extensions that every new tab my website opens. I am trying to get it to not show my url in the address bar. Any help in doing it for 1 or all 4 would be greatly appreciated.


Chrome Extension:

chrome.tabs.onCreated.addListener(
function(tab){
var newTabURL = {url: 'https://www.google.com'};

if(tab.url === "chrome://newtab/")
{
chrome.tabs.update(newTabURL);
}

console.log(tab.url);
}

);



Firefox Extension:

browser.tabs.onCreated.addListener(
function(tab){
var newTabURL = {url: 'https://www.google.com'};

if(tab.url === "about:newtab")
{
browser.tabs.update(newTabURL);
}

console.log(tab.url);
}
);



Opera Extension:

chrome.tabs.onCreated.addListener(
function(tab){
var newTabURL = {url: 'https://www.google.com'};

if(tab.url === "chrome://startpage/")
{
chrome.tabs.update(newTabURL);
}

console.log(tab.url);
}
);



Edge Extension:

browser.tabs.onCreated.addListener(
function(tab){
var newTabURL = {url: 'https://www.google.com'};
browser.tabs.update(newTabURL);
console.log(tab.url);
}
);