Open Multiple website

There are multiple website which we open daily before we start our work, like h=google,gmail,facebook,youtube etc
To open each website in different tab is time consuming. So we will develop an extension which will automate this.
Let’s make it simpler by just adding all urls in one extension and by clicking a button we can open all daily use websites in one go.
We have to just add all the required website in this extension once and whenever we start chrome just we have to click a button to launch all the website.