How to Block Websites on Chrome: Extensions, Schedules, and Parental Controls

The fastest way to block a website in Chrome on a desktop is to install a browser extension — there is no built-in block button anywhere in Chrome's settings. A free extension like BlockSite can block a specific URL in under a minute, and most extensions in this category also let you block by content category, set a schedule, and add a password so the rules cannot be quietly removed.

On mobile, the picture is different. Chrome extensions do not run on Android or iOS, so blocking a site in the mobile browser means working at the operating system level or through a dedicated parental-control app — not through Chrome itself. That distinction matters before you spend time looking for a mobile Chrome setting that does not exist. Firefox works differently again — block websites on Firefox walks that browser.

Why Chrome has no native block button

Google built Chrome as a rendering engine: its job is to fetch and display pages, not to police which ones load. Access control has always lived in a separate layer — extensions on desktop, operating-system controls on mobile — and that design has not changed as of 2026.

On desktop, that separation means the Chrome Web Store becomes the workaround layer. Extensions can intercept navigation requests before a page loads, which is why dedicated blocking tools work there while Chrome's own menus offer nothing equivalent. Chrome's supervised account features and Google Family Link exist, but they apply to managed Google accounts in specific configurations — not a freely configurable blocklist any parent can set up in five minutes.

On mobile, the gap is wider. Chrome on both Android and iOS ships without extension support, so the desktop workaround doesn't transfer. A site you've blocked with a Chrome extension on your laptop remains fully accessible in Chrome on the same child's phone.

The practical upshot: stop looking inside Chrome's settings for a block toggle. The fix is one layer up — an extension on desktop, OS-level controls or a dedicated parental control app on phones.

Step-by-step: Block Website Chrome

1. Open the Chrome Web Store and search for a site-blocking extension — BlockSite and StayFocusd are two commonly cited options, each with a free tier.
2. Click Add to Chrome and confirm the permissions dialog.
3. Open the extension popup and enter the full domain you want blocked (e.g., reddit.com).
4. Enable any password or PIN lock the extension offers — without it, removing the extension takes only a few clicks from the Extensions menu.

Chrome extensions block sites inside Chrome only. Firefox, Edge, Samsung Internet, and any other browser on the same device are completely unaffected. For parental use, a child who simply opens a different browser bypasses this entirely — treat a desktop extension as a friction layer, not a sealed wall.

Android Chrome: Block at the OS level

Chrome's Android version does not support extensions, so the only reliable path is device-level controls that apply across every browser.

1. Go to Settings → Digital Wellbeing & parental controls → Dashboard.
2. Find Chrome in the app list and set a daily time limit to zero minutes — this locks the app regardless of what site the user tries to reach.
3. For content-category filtering without locking Chrome outright, open the Google Family Link app, select the child's profile, and look under Controls for website restriction options.

iPhone: Screen Time blocks across every browser

Chrome on iOS has no extension support, and Apple doesn't allow any individual browser app to enforce its own site blocks. Screen Time applies the restriction at the OS level — Chrome, Safari, and any other installed browser are all covered.

1. Go to Settings → Screen Time → Content & Privacy Restrictions and turn on the toggle.
2. Tap Content Restrictions → Web Content.
3. Select Limit Adult Websites for broad category filtering. To block a specific domain, add it under Never Allow in the same menu.

The Screen Time menu layout is consistent across recent iOS versions, though sub-menu labels occasionally shift between major releases — if a label doesn't match exactly, look one level deeper in the same path.

Block a specific site with a Chrome extension

The standard installation flow takes under two minutes:

1. Open Chrome and go to the Chrome Web Store
2. Search for BlockSite and click Add to Chrome
3. Confirm the permissions prompt — the extension needs browsing access to intercept matching URLs
4. Click the BlockSite icon in your toolbar and add the first URL you want blocked

You can block by exact URL (e.g., reddit.com) or by content category. The category filter covers adult content, gambling, and similar classes, so you don't have to name every individual site — anything matching the category signal gets intercepted automatically.

Set a password before adding any sites

For parental use, the PIN or password lock is the step that determines whether any of this holds. Without it, anyone who knows how to reach Chrome Settings can uninstall the extension in seconds, or open it and delete sites from the blocklist directly.

BlockSite includes a password-protection option in its settings. Enable it immediately after installation, before you add a single URL. If your child is old enough to use Chrome, they are old enough to find the uninstall path.

One caveat worth noting: Chrome Web Store policies on extension capabilities change periodically. Confirm that password-protected uninstall prevention is active in the version you install — don't assume it carried over from an earlier release.

The Chrome-only limit parents must understand

A Chrome extension blocks sites in Chrome only. It has no effect on Firefox, Edge, Safari, Samsung Internet, or any other browser on the same device. On an Android phone where a second browser is already installed, a Chrome-only block can be bypassed without any technical knowledge — the child simply opens a different app.

For a desktop where Chrome is the sole browser and you've disabled or removed alternatives, an extension is a workable solution. For a shared family phone or any device with multiple browsers, it is not a complete block — and that gap matters more than any other limitation in this section.

Scheduled and time-limit blocking in Chrome

BlockSite lets you attach a daily schedule to each blocked URL — restrict a site during school hours on weekdays and leave it open on weekends. You configure this inside the extension's schedule panel after adding a site to the blocklist. The rule runs locally in Chrome, so it holds even if the internet connection drops.

One hard limit applies to every schedule set this way: the block only enforces inside Chrome. If someone opens the same site in Firefox, Safari, or Samsung Internet on the same device, the schedule is invisible to those browsers. For a parental setup, that gap matters.

Daily usage caps per site

StayFocusd measures cumulative minutes per day on a given site and locks it once the cap is reached, resetting at midnight. That model suits adults managing their own focus habits more naturally than parent-controlled setups, because extension settings can be changed without extra protection — which puts the burden on the "nuclear option" settings StayFocusd offers to make self-removal harder.

BlockSite covers both angles: a fixed time-of-day schedule, a daily minute cap, or a combination of the two on the same site. Whichever method you choose, enabling BlockSite's password protection on the extension settings is the step that makes the block durable — without it, the extension can be removed from Chrome in a few clicks, and every schedule or cap goes with it. A block websites and apps layer closes that gap on a child's device — the block lives outside the browser, so it survives the extension being deleted.

Setting Up NexSpy to Cover Website Chrome

Every schedule or daily cap set inside a Chrome extension covers exactly one browser. The moment a child opens Samsung Internet, Firefox, or any other app on the same Android device, every block and minute limit from the previous steps stops applying — the extension has no reach outside Chrome.

When the goal is consistent category blocking regardless of which browser a teenager picks up, NexSpy may fit better than an extension-based setup. A parent who wants adult, gambling, drug, and violence sites blocked across whichever browser a child opens can apply Website Restrictions at the device level on Android — those filters cover Chrome, Edge, Firefox, Opera, Samsung Internet, and Safari, and stay active because the child cannot remove them by uninstalling a browser extension (mechanism, why it fits). On Android, the browsing history view adds a second layer: actual sites visited, so a parent can add specific URLs to the custom URL blacklist based on real behavior rather than guessing at what a teenager might search for.

How to set it up

1. Install the NexSpy Kids app on the child's Android device and create a parent account.
2. Pair the child's device to the parent dashboard.
3. Open Website Restrictions and enable the content categories to block: adult, gambling, drugs, and violence.
4. Add any specific URLs to the custom URL blacklist.
5. Enable Safe Search to enforce search filtering across all browsers on the device.

For parents who blocked a site in Chrome and then found their child switched

Chrome extensions only enforce rules inside Chrome. The moment a child opens Firefox, Edge, Samsung Internet, or any other installed browser, every site block disappears — the extension has no visibility there. This is a structural limit, not a configuration problem.

Remove the escape routes on the device

On Android, go to Settings → Apps, find each secondary browser, and either uninstall it or tap Disable to prevent it from running without removing it entirely. Repeat for every non-Chrome browser on the device.

On iPhone and iPad, Screen Time can remove access to additional browsers:

• Settings → Screen Time → Content & Privacy Restrictions → Allowed Apps — toggle off any browser you want unavailable
• Content & Privacy Restrictions → iTunes & App Store Purchases → Installing Apps → Don't Allow — prevents reinstalling removed apps

Lock the app store, or the block doesn't hold

A child who can install a new browser can always bypass a Chrome-only block within minutes. The sequence that actually closes the loop:

1. Remove or disable non-Chrome browsers via device settings
2. Block new app installs with a Screen Time or Android parental control PIN the child doesn't know
3. Set a separate passcode for Screen Time or parental settings — distinct from the device unlock code

Without step 2, the blocked browser is back in under a minute. Without step 3, Screen Time settings themselves can be changed.

Platform-level controls that apply across all installed browsers — rather than per-browser extensions — are the only way to enforce a block that survives a browser switch.