Short answer: On the Google, Samsung and Cloudflare pages we read, Android has no single built-in switch that blocks a website of your choice on your own phone. What Google does offer is a daily time limit for a site in Digital Wellbeing, a block list inside Family Link (made for a parent managing a child), and Private DNS, which can use a family-filter service that blocks categories rather than sites you pick. This guide explains each, what it covers, and where the gaps are.
Version note: Checked against official help pages on 21 Oct 2026. The Cloudflare and CleanBrowsing Private DNS steps are for Android 9 and later. Google says some Digital Wellbeing steps "may vary based on your device", and Samsung's page does not name an Android or One UI version, so use the search box in Settings if a label differs on your phone.
It is natural to look in Chrome first. Google's Chrome help page on site permissions describes the choices you get when a site asks to use features like camera, location and microphone: Allow this time, Allow while visiting the site and Never allow. "Never allow" means the site "can't use the feature". It does not stop the page from loading, so it is a permission control, not a website blocker. We did not find an official Chrome page for Android with a block list for your own account. Our Chrome guide covers the adult-site side: https://mamoriblocker.com/guides/block-adult-sites-chrome-android/
That leaves the options below. They sit at different levels: one limits time, one is for a child's account, one works on the whole phone by category.
Google's Android help page says you can see how long you spend on websites in Chrome and "limit how much time you spend on a website each day". This is a time limit, not a permanent block. The steps on Google's page:
Things to know. Google's page does not say what happens when a site timer runs out, so test it with a short limit first. The site list in Digital Wellbeing is for Chrome, so it does not cover a different browser (see the gaps below). For apps, Google's page says app timers "reset at midnight" and that you can delete a timer to use the app again, so on your own phone a timer is easy to remove unless something stands in the way.
That something can be an App limits PIN. Google's page says: "To set app limits on a device that only you can change, you can set a PIN", under Settings > Digital Wellbeing > App limits > App limits PIN, and adds "Once you set up an App limits PIN, do not share it with others." Google's page describes this PIN for app time limits and does not say it also covers site timers, so check on your own phone.
If the phone belongs to a child whose Google Account a parent manages, Family Link has a real block list for Chrome. Google's page says that on an Android device you can use Family Link to "allow or block specific sites". The steps:
Google explains how the entry works. A site entry that includes the www. part applies only to that exact address, while blocking an entire domain also applies to addresses that begin or end differently. Google also lists the content filter choices on the same screen: Allow all sites, Try to block explicit sites and Only allow approved sites. Google says "No filter is perfect". For the full child-phone setup see our guide: https://mamoriblocker.com/guides/block-adult-content-kids-android-phone/
This is for a parent managing a child. It is not a setting an adult can switch on for their own account.
Private DNS changes where your phone looks up website addresses. Cloudflare's Android page says that on Android 9 and later, once you configure Private DNS, your device uses that resolver on all networks, cellular included. The steps on Cloudflare's page:
On a Samsung Galaxy, Samsung's support page says to tap More connection settings under Connections, then Private DNS. Cloudflare lists family.cloudflare-dns.com for blocking "malware and adult content", and CleanBrowsing lists family-filter-dns.cleanbrowsing.org for its free Family Filter. For more detail on the two see our guide: https://mamoriblocker.com/guides/dns-to-block-porn/
The honest limit for this guide's topic: these are category filters. CleanBrowsing's comparison page lists "Allow/Block Specific Domains" and "Custom Block/Allow Lists" as paid features and "No" for the free filters. So a free family-filter hostname will not let you add one particular news or shopping site to a block list.
Can I block one specific website in Chrome on Android?
Not on the official pages we read, for your own account. Family Link has a block list for a child's account, and Digital Wellbeing has a daily time limit for a site.
Can I block a website permanently on Android?
Nothing we found on an official page makes a block permanent on a phone you control. Family Link settings are managed from the parent's account. For your own phone, in our view, the realistic approach is a layer plus a lock that someone else holds or that makes you wait.
Does Private DNS block any site I choose?
Not with the free family hostnames. They block categories such as adult content and malware. CleanBrowsing lists custom block lists as a paid feature.
Do these steps work the same on Samsung?
Samsung's page gives the Private DNS path as Connections > More connection settings > Private DNS. Samsung's page does not cover Digital Wellbeing, and menus can differ, so use the search box in Settings.
Everything above works without any app. Mamori is a newer app for iPhone, iPad and Android that adds a lock around the blocking. On Android it blocks 2.5M+ adult sites across the whole phone, not just one browser, using an on-device DNS filter built on Android's VpnService (no remote VPN server, no browsing logs, nothing uploaded). You can add your own sites to a block list, keep an allow list, block specific apps such as a second browser, and exempt apps like banking with the Allowed apps setting.
In our view, the lock is the main difference from the built-in tools: a cooldown timer, a random phrase, or a PIN or passphrase that a trusted person can hold. Honest limits: Android allows only one VPN at a time, so another VPN or blocker that takes the slot switches Mamori's filter off. It is built for adults blocking for themselves, so for a child's phone use Family Link as the base layer. It has no accountability reports, and no blocker replaces support from people you trust.
There is a 7-day free trial on the monthly and annual plans, plus a one-time lifetime option.
Last checked 21 Oct 2026. This guide is general information, not medical advice.