Chrome lets you block a website so it won't load when you try to visit it

Chrome does not have a built-in "block this site" button. Instead, you have three real options: use an extension that blocks sites for you, set up parental controls if you share a device, or manually type the site into your browser's restricted list. Which one works depends on whether you are trying to stop yourself from visiting a site, stop someone else, or just want a quick way to say "I do not want to see this anymore."

The fastest route for most people is a free extension like BlockSite or LeechBlock NG. These sit in your browser toolbar, let you add any website URL to a blocklist in seconds, and prevent the page from loading when you type it in. The trade-off is that you are installing a small program that can see which sites you visit — so you are trusting the extension maker not to misuse that data.

Key Takeaways

  • Chrome extensions like BlockSite and LeechBlock NG let you add websites to a blocklist that prevents them from loading.
  • Parental controls in Chrome (Family Link) work if you manage a child's account and want to block sites across all their devices.
  • Extensions can see your browsing history, so read only from the official Chrome Web Store and check the extension's privacy policy first.
  • Blocking a site in Chrome only works on that browser and that device — it does not block the site on your phone or in Firefox.

Using a browser extension to block a single site

Open the Chrome Web Store by typing chrome.google.com/webstore into your address bar. Search for "BlockSite" or "LeechBlock NG" — both are free and widely used. Click "Add to Chrome," then confirm when the popup asks if you want to add the extension.

Once installed, you will see a small icon in your toolbar (usually the top right of your browser window). Click it, then look for a button that says "Add" or "Block this site." Type or paste the website URL you want to block — for example, reddit.com or twitter.com. Some extensions let you block just one page (like reddit.com/r/gaming) or the entire domain. Save your choice, and the next time you try to visit that site, you will see a blocked page instead.

The extension stays active until you remove it or turn it off. You can pause it temporarily if you need to visit a blocked site, but most extensions ask you to enter a password or PIN first — that is intentional, so you cannot just unblock yourself on impulse.

Setting up parental controls if you manage someone else's account

If you manage a child's Google account, you can use Family Link to block sites across all their devices at once. This is different from an extension — it works on their phone, tablet, and computer, and the child cannot turn it off.

Go to families.google.com and sign in with your own Google account. Select the child's account, then go to "Controls on Google Play" or "App and content restrictions." You will see options to set a content filter level (Strict, Moderate, or Minimal) and to manually block specific sites. Add the URLs you want blocked, and they will be restricted on any device where that child is signed into their Google account.

Family Link also shows you a weekly report of what sites they visited and how much time they spent in Chrome. The child can see that they are being monitored, and they cannot bypass the block by signing out and using a different account on the same device.

Why extensions can see your browsing and what to check before installing

When you install an extension, you are giving it permission to see the websites you visit — that is how it knows when to block a page. Before you install any extension, click "See details" on the Chrome Web Store page and read the privacy policy. Look for whether the extension maker sells your browsing data, shares it with advertisers, or keeps it only to run the extension itself.

Stick to extensions with thousands of reviews and a recent update date. If an extension has not been updated in over a year, the maker may have abandoned it, which means security problems could go unfixed. BlockSite and LeechBlock NG are both actively maintained and have transparent privacy policies that say they do not sell your data.

You can also check what permissions an extension has by clicking its icon in your toolbar, then clicking the three dots and selecting "Manage extension." Go to "Permissions" to see exactly what it can access. If an extension asks for permission to "read and change all your data on websites you visit," that is a red flag — it means it can see and potentially modify everything you do online.

Blocking a site only works on the device and browser where you set it up

If you block a site in Chrome on your laptop, it will not be blocked in Chrome on your phone or tablet unless you install the same extension there. It also will not be blocked if you open Firefox or Safari on the same laptop — each browser keeps its own blocklist.

This matters if you are trying to stop yourself from visiting a site. Blocking it in Chrome is useful, but if you can just switch to Firefox when you want to visit it anyway, the block is not very effective. Some people use this as a feature — they block distracting sites in their work browser but leave them open in their personal browser.

If you want to block a site across all your devices, you have two options: install the same extension on each device, or use Family Link if you manage the account. Family Link is stronger because the person using the account cannot uninstall it.

What happens when you try to visit a blocked site

When you type a blocked URL into your address bar, Chrome will load a page that says the site is blocked. Most extensions show a message like "This site is blocked" with a button to unblock it temporarily. Some extensions let you set a timer — for example, "unblock for 15 minutes" — so you can visit the site if you really need to, but you have to make a conscious choice to do it.

If you try to visit the site through a link from another page, the block still works. The extension checks the URL before the page loads, so you cannot sneak around it by clicking a link instead of typing the address.

Some extensions also block the site if you search for it in Google or another search engine. This is optional and you can turn it off in the extension settings if you want to be able to search for the site but not visit it.

Removing or pausing a block

To remove a site from your blocklist, click the extension icon in your toolbar and look for a list of blocked sites. Find the one you want to unblock and click "Remove" or the trash icon next to it. The site will load normally the next time you visit.

To pause the entire extension temporarily, right-click the extension icon and select "Manage extension," then toggle it off. This turns off all blocks until you turn it back on. Some extensions also let you pause just one site for a set amount of time without removing it from your blocklist.

If you want to uninstall the extension completely, go to chrome://extensions, find the extension in the list, and click "Remove." This deletes the extension and all your blocked sites at once.

Frequently Asked Questions

Can someone else unblock a site I blocked in Chrome?

Yes, if they have access to your computer and your browser. Extensions are tied to your Chrome profile, so if someone else logs into Chrome on your device with their own account, they will not see your blocks. But if they use your account, they can unblock any site by clicking the extension icon and removing it from the blocklist. Family Link is stronger — only the parent account can change the blocked sites.

Will blocking a site in Chrome stop it from loading on my phone?

No. Chrome on your phone is a separate browser with its own extensions and settings. You would need to install the same blocking extension on your phone and add the site to the blocklist there. Family Link does work across devices if you manage the account.

What if I block a site by mistake?

Click the extension icon in your toolbar, find the site in your blocklist, and click "Remove" or the delete button next to it. The site will load normally on your next visit. If you cannot find the extension icon, go to chrome://extensions to manage all your extensions.

Do I need to restart Chrome after blocking a site?

No. The block takes effect when ready. The next time you try to visit the site — even if you already have a tab open — you will see the blocked page.

Can I block a site only during certain hours?

Some extensions like LeechBlock NG let you set schedules — for example, block a site during work hours but allow it after 6 p.m. You set this up in the extension settings. This is useful if you want to prevent yourself from visiting a site when you should be working, but allow it during personal time.