The Site Blocker provide simple and easiest way to block any web site you want. You can easiest block(or unblock) web sites by right clicking on page. You can add site or sites list in options page and they will blocked automatically. All blocked sites has 'Password protection' option.
See more on youtube ↓
** Features **
✔ Password protection
✔ Block sites subdomains
✔ Block sites by entered keys
Get Premium account and use synchronization and full uninstall protection feature!
To block sites in incognito mode you need to activate 'Allow run in incognito mode' checkbox in chrome://extensions page.