How It Works

How BlockLang Works

BlockLang is not magic – it works exactly as you configure it. You decide what to filter, and it filters exactly that.

Add Your Filters

You simply type what you want to block:

Domains:
facebook.com cnn.com

Block specific websites completely

Wildcards:
*.ru

Block all websites ending in .ru

Languages:
language:ru

Block all Russian language content

Filtering in Action

When you search on Google or Bing:

  • Extension checks each search result

    Scans every result against your filter list

  • Hides results matching your filters

    Removes unwanted content from view

  • Everything happens locally in your browser

    No server communication required

  • No data leaves your device

    Complete privacy protection

  • Works with all search engines

    Compatible with Google, Bing, and others

  • Instant toggle on/off

    Enable or disable filtering with one click

Quick Russian Filter

Filt-Ru Button: Toggle this ON to instantly block 89+ Russian domains (like .ru, .рф, vk.com, yandex.ru) without adding them individually.

Perfect for users who want to avoid Russian-language content but don't want to manually add dozens of filters.

Complete Transparency

You control everything: BlockLang only hides what YOU tell it to hide. Add reddit.com → Reddit results disappear. Remove the filter → Reddit results come back.

Local only: No servers, no tracking, no data collection.

Real-World Examples

Block Low-Quality Sites
You search for:
javascript tutorial
Your filters:
w3schools.com *.ru
Result:
W3Schools and all Russian sites are hidden from results
Clean News Results
You search for:
climate change news
Your filters:
cnn.com foxnews.com buzzfeed.com
Result:
Only trusted news sources remain visible
Language-Specific Search
You search for:
programming course
Your filters:
language:ru language:zh language:ar
Result:
Only English content is displayed
Quick Russian Filter in Action
You search for:
react components
Your setup:
Filt-Ru: ON
Automatically blocks 89+ Russian domains
Result:
All .ru, .рф, vk.com, yandex.* sites hidden instantly

Language Filter Explorer

Find the language code you need for filtering. Type to search languages and get the exact filter code.

Search Results:
Add this to your filters:
No languages found. Try a different search term.

Technical Implementation

DOM Filtering

BlockLang uses DOM-based filtering to hide search results after the page loads. This approach ensures compatibility and doesn't interfere with search engine functionality.

Local Storage

All your filters and settings are stored locally on your device using browser storage. No data is sent to external servers or third parties.

Performance

Filtering operations are optimized for speed. The extension processes results in milliseconds without affecting your browsing performance.

Privacy First

No tracking, no analytics, no data collection. BlockLang is designed with privacy as the top priority from the ground up.

Ready to clean up your search results?

Download BlockLang and take control of your browsing experience today.

Download BlockLang