Bat/Script File To Set Homepage

In Internet Explorer:

you can do that like below:
REG ADD “HKCU\Software\Microsoft\Internet Explorer\Main” /V “Start Page” /D “http://www.google.com/” /F

In Firefox:

FF uses a JavaScript (prefs.js in your FireFox User Profile) and not a Registry entry.

What you will need to do is programmatically edit the prefs.js file in the user profile for Firefox found in the directory C:\Users\ [USERNAME]\AppData\Roaming\Mozilla\Firefox\Profiles\ [Subfolder]

You will need to add or edit the line that looks like: user_pref(“browser.startup.homepage”, “www.google.com”); as mentioned:

@Echo off
taskkill /im firefox.exe* /f

cd /D “%APPDATA%\Mozilla\Firefox\Profiles”
cd *.default
set ffile=%cd%
echo user_pref(“browser.startup.homepage”, “https://www.google.com”);>>”%ffile%\prefs.js”
set ffile=
cd %windir%

In Google chrome:

chrome settings are in %USERPROFILE%\Local Settings\Application Data\Google\Chrome\User Data.ChromotingConfig.json and are a little bit encrypted as npocmaka mentioned.

but you can do a workaround like by just pasting following javascript into the “Home Page” pref field (under your Chrome options) and it works as expected when clicking the “Home” button.

javascript:(function(){ window.location.href=’http://www.google.com/’;})();