Complete guide to blocking websites on Android: Methods, tips, and all available options

Security and control over access to certain content on the Internet is a growing need., Both protect the youngest members of the household as if to ensure productivity in work environments Or simply to avoid distractions and dangerous sites in your daily life. Android, as the leading mobile operating system, offers various ways to block websites. Whether through secure browsers, extensions, specific apps, network settings, or parental control tools, here's the best way to block websites. The most complete guide to blocking websites on Android and all the options at your fingertips on mobile devices and tablets.

Why block websites on Android?

The Internet is an almost inexhaustible source of information, but Not all content is safe or suitable for all audiencesFrom websites with adult content, malware risks, and fraudulent pages, to gambling platforms, social networks, or forums that can lead to addiction or loss of productivity. The motivations for filtering and restricting access to certain sites are numerous:

Protect minors against inappropriate or dangerous content.
avoid distractions in the work environment, educational environment or during study.
Prevent entry to malicious websites that may compromise the privacy or security of the device.
Control usage and browsing time to promote healthier digital habits.

Fortunately, there are solutions for every situation and user level, from the simplest to the most advanced, without requiring technical knowledge.

Always use a secure and configurable browser

The web browser you choose is your primary gateway to the Internet from your mobile device. Currently, Google Chrome is the most used browser on Android, but there are alternatives with greater flexibility and control to block or filter web pages.

Main secure browsers and their advantages:

Google Chrome- Fast and secure, with built-in protection against dangerous sites. Allows you to restrict access to websites with the help of external apps.
Mozilla Firefox: stands out for accepting extensions in its Android version, which opens the door to advanced website blockers as Leechblock NG.
Brave: Privacy-focused browser with ad and tracker blocker, ideal for those looking for additional privacy.
Opera and Microsoft Edge: include protection and filtering tools, as well as customization options.

If your goal is protect minors or limit certain sites, some browsers offer childish ways or “Kids Mode”, which automatically filters inappropriate pages.

How to block websites on Android with Mozilla Firefox and extensions

Mozilla Firefox becomes one of the best options if you are looking to block specific websites on Android., thanks to its support for advanced add-ons and extensions. This is especially useful if you share your phone with children, family members, or anyone whose access you want to restrict to certain sites.

Step-by-step instructions for blocking websites with Firefox and Leechblock NG:

Install and open Firefox from the Google Play Store on your Android device.
Go to the menu (three dots at the top right).
Select "Add-ons" and search for Leechblock NG.
Add the extension by clicking the symbol + and select “Add”.
Go back to “Add-ons” and enter the Leechblock NG settings.
Add the links (URLs) you want to blockYou can put as many as you want, since the system allows it without limit.

Leechblock NG allows advanced configuration: Set schedules, exceptions, block by category, and more. This way, you can customize blocks for the entire family, study sessions, or limit only certain time slots.

Block websites on Android using Google Chrome and third-party apps

Out of the box, Google Chrome does not include a feature to block websites on Android. However, it is possible to achieve this by using specialized applications, such as BlockSite, which act as "layers" of control over the browser and the system itself.

BlockSite: How this app works and what its advantages are

Available for free on the Google Play Store.
Allows block specific websites and applications, both in Chrome and other installed browsers.
Includes additional features such as work mode (to block by schedule), block by category (adult, gambling, social networks), password protection and synchronization with the desktop version.
Its interface is simple and intuitive, and access to the control panel can be protected to prevent unauthorized changes.

Steps to block pages with BlockSite on Android:

Download and install BlockSite from Google Play.
Grants the necessary permissions to control the browser and other apps.
Add URLs or keywords that you want to block by pressing the icon +.
Confirm the settings and verify that access is blocked. You can check this by opening Chrome or another browser.

Limitations: The free version of BlockSite may have limits on the number of blockable sites. The premium version gives access to unlimited blocks and extra protection.

Other apps to block websites on Android

There are several Android apps designed to control internet access and restrict websites, with approaches ranging from parental control to improving productivity. Below, we review the most notable ones:

stay focusedIdeal for those who want to avoid distractions by blocking pages that induce procrastination. Allows you to set periods, schedules, and usage statistics.
app block: Focused on limiting both apps and websites, it helps those looking to disconnect from social media, games, or other services.
Kaspersky Safe Kids y Trend Micro Mobile Security: Antivirus solutions that incorporate features to block dangerous pages and advanced parental controls.

These apps often require accessibility or administrative permissions to function properly and can block access at the system level, encompassing all installed browsers.

Google Family Link: The official parental control for blocking websites

If what you are looking for is to establish comprehensive parental controls, Google offers its free and official solution: Family LinkThis system is focused on controlling and supervising children's accounts managed within a Google "family."

Advantages of using Family Link:

Allows block web pages in Google Chrome of parent-managed devices.
Limit access to apps and games, schedules, and device usage.
Monitor location and activity of the minor in real time.

Basic Google Family Link setup:

Download Family Link for parents and install the companion app for children and teens on the device you're monitoring.
Link both accounts in Google Family Settings and follow the pairing instructions.
From the parent app, access the minor's profile and enter Controls > Content Restrictions > Google Chrome > Manage Sites > Blocked.
Add the URL of the sites you want to block. The restriction will be applied automatically.

Family Link may seem complicated to set up, as it requires the child's account to be properly managed in the Google ecosystem, but it is one of the most comprehensive and secure systems.

Block websites on Android without installing apps: Digital Wellbeing and other native options

If you prefer do not install third-party applicationsAndroid has long integrated tools for managing usage and controlling web access, which are especially useful in certain models and recent versions of the operating system. You can also consult How to detect and block intruders on your Wi-Fi network to further improve security.

Google Digital Wellbeing:

Allows you to monitor and Manage the usage time of applications and websites from the settings section.
Using the control panel, you can restrict access to specific websites, especially in Google Chrome (this may not be available in other browsers).

Step-by-step guide to blocking websites with Digital Wellbeing:

Open the application Configuration and access Digital Wellbeing and parental controls.
Press on Control panel.
Search Chrome and select Show sites you visit.
Click the hourglass icon next to the site you want to block.
Set the timer to 0 0 hours and minutes to completely block access.

The site will be inaccessible to Chrome until you remove the timer from that same menu, a very useful feature for parents or users who want to limit their internet usage.

How to detect and ban intruders from your Wi-Fi: Complete guide to security, blocking, and device monitoring

Edit the hosts file on Android to block websites at the system level

For advanced users, there is the option to modify the hosts file System Restriction, a technique that blocks access to certain URLs globally (affecting all browsers and apps). This method requires root permissions on most devices, so it's not recommended for most users unless you know what you're doing.

How does the hosts file work? By adding an entry like “127.0.0.1 www.blockedsite.com,” all requests to that domain will be redirected locally and will not load any content.

General steps to edit the hosts file on Android:

Get root permissions on your device.
Download an advanced file explorer (such as ES File Explorer) that allows system access.
Navigate to the /system/etc/ path and open the hosts file with a text editor.
Add the lines “127.0.0.1 domain-to-block.com” for each unwanted website.
Save the changes and reboot the device.

Warning: Modifying the hosts file may affect system stability and requires technical knowledge.

Block websites on Android via OpenDNS and network settings

Another effective way to filter access to inappropriate websites is using a DNS leak, such as OpenDNS. This solution is perfect for those who want to apply global restrictions on Wi-Fi networks where multiple devices connect.

How to configure OpenDNS on Android:

Accede to Configuration > Connections > WiFi.
Click on the connected network and select Advanced and then Change DNS settings.
Enter the OpenDNS DNS:
DNS1: 208.67.222.123
DNS2: 208.67.220.123
Save the changes so that, from that moment on, all devices connected to that Wi-Fi network will have web filtering activated.

This method doesn't require additional apps and is ideal for home, school, or business use. Keep in mind that it only works while connected via Wi-Fi, and the menus may vary depending on the brand of your Android.

Blocking websites from business and school administration (Chrome Enterprise, MDM, and network policies)

In professional, educational or business environments, website blocking can be managed remotely and centrally using the Google Chrome Enterprise management console or mobile device policies (MDM).

What can you do with these policies?

Define lists of allowed and blocked URLs for all managed devices.
Apply exceptions, schedules, or block specific operating system functions.
Monitor policy compliance and adjust restrictions remotely.

To apply these controls, you must be signed up for Chrome Enterprise Core or use a mobile device management provider that supports Android policies.

Using antivirus and firewall applications to block dangerous websites

In addition to the above solutions, some advanced antivirus and firewall applications They integrate web filters and options to block access to dangerous or suspicious sites. Popular examples include Kaspersky, Trend Micro, or NetGuard, which have firewall and filtering capabilities.

Advantages:

They protect against threats in real time.
They allow you to block entire categories of web pages or add exceptions.
Centralized management and usage profiles (children, work, guests, etc.).

Some firewalls require root access, although non-root options (such as NoRoot Firewall) now exist, making them easier to install and manage.

Other useful features: SafeSearch and website notifications

SafeSearch It's a Google-integrated filter that helps hide explicit search results. To activate it:

Access the Google search settings on your device.
Activate the SafeSearch filter.
From then on, search results will be automatically filtered across all browsers linked to your account.

On the other hand, if what you want is block pop-up notifications from certain sites:

Enter the app Configuration > Applications > Chrome > Notifications.
Here you can revoke permission for specific pages that send you annoying notifications.

Frequently asked questions about blocking websites on Android

Can I block websites in all browsers at once? Yes, using apps like BlockSite or methods like editing the hosts file or changing the network DNS, you can apply blocks to all browsers on the device.
Is it possible to disable the lock afterwards? All of the methods presented allow you to revert the changes, either by removing the restriction from the settings panel, uninstalling the app, or restoring the original network/host settings.
Which option is safest for children? It's best to combine Google Family Link with a secure browser and, if possible, enable Digital Wellbeing/third-party parental controls.
Do parental control apps spy on my data? Official parental control apps, like Family Link, prioritize privacy and security. Always check permissions before installing a third-party app.

Android provides you with a wide variety of tools and methods to block websites., ranging from the simplest and most accessible options, such as extensions and apps, to professional solutions for businesses or schools. Choose the method that best suits your needs and context, combining, if necessary, several systems to strengthen protection and the browsing experience on your Android mobile device or tablet.