Site Blocker

A Chrome extension that helps you stay focused by blocking distracting websites. When you visit a blocked site, the page is replaced with a block screen. Unblocking requires intentional effort — either a timed temporary unblock or a permanent removal with a 60-second cooldown.

Features
One-click blocking — Visit any site, click the extension icon, and block it instantly
Full-page block screen — Blocked sites are completely replaced, not just redirected
Temporary unblock — Access a blocked site for a set duration (5/15/30/60 min or custom). Requires a written reason. Auto-reblocks when time expires
Permanent unblock — Remove a site from the blocklist. Requires a written reason and a 60-second wait to prevent impulsive decisions
Subdomain matching — Blocking reddit.com also blocks old.reddit.com, www.reddit.com, etc.
Persistent storage — Your blocklist survives browser restarts

Block a site
Navigate to the site you want to block
Click the Site Blocker icon in the toolbar
Click Block
The page reloads and shows the block screen
Temporary unblock
Visit a blocked site (you'll see the block screen)
Click Temporary Unblock
Enter why you need access and select a duration
The site is accessible until the timer expires, then automatically reblocks
Permanent unblock
Visit a blocked site (you'll see the block screen)
Click Permanently Unblock
Enter your reason
Wait 60 seconds for the confirmation button to activate
Confirm to remove the site from your blocklist