Open Webpages on Startup is a browser extension that opens your favorite webpages on startup. You can set frequency of opening webpages, daily range, and more.
Chrome Store Url : https://chromewebstore.google.com/detail/gfdhcbmjhiadddlnmegnelonlialapgi?utm_source=item-share-cb
Firefox Store Url : "will be added soon"