Privacy Policy for BlockLang

Last updated: June 24, 2025

Overview

BlockLang is a lightweight and privacy-friendly browser extension that helps you filter your search results on Google and Bing by removing unwanted languages, domains, or sites. The extension also includes optional security protection to warn users about potentially dangerous websites (scams, phishing, malware). It gives you complete control over the types of results you see through customizable filters. It's designed with privacy in mind and includes no tracking whatsoever.

Data Collection Overview

Data We DO NOT Collect

• Personal Information: We do not collect names, email addresses, phone numbers, or other personal identifiers
• Browsing History: We do not track or store your browsing history
• Search Queries: We do not collect or store your search terms
• Website Content: We do not collect or store content from websites you visit
• User Analytics: We do not use analytics services that track individual users
• Data Sales: We do not sell, rent, or share your data with third parties for marketing purposes

Data We DO Collect

• Custom Filter List: Your personalized blacklist of domains and languages you want to block (stored locally only)
• Extension Settings: Whether filtering is enabled/disabled and your preferences (stored locally only)
• Pro Subscription Status: Whether you have purchased the Pro version (stored locally and in Apple's systems for Safari version)
• Security Protection Domain Checks: When security protection is enabled, the extension sends website domain names to the BlockLang API to check for scam, phishing, and malware threats. No personal data or user identifiers are sent. Domain checks are processed in real-time and are not stored on our servers.

Data Storage and Security

• Local Storage: All user preferences and custom filters are stored locally on your device using your browser's built-in storage mechanisms
• No Cross-Device Sync: Extension settings and filters remain on each device separately - no automatic syncing across devices
• No Data Storage: We do not operate servers that store your personal data or browsing information
• Minimal Network Usage: Core filtering works completely offline. Optional security protection feature requires internet connection for real-time domain safety checks
• No Data Retention: Security checks are processed instantly without storing domain names or check results
• Apple App Store: Subscription information is handled securely by Apple's App Store systems (Safari version only)

Network Communication

BlockLang connects to remote servers only in these specific cases:

• Extension Updates: Automatic updates are handled by your browser's extension store (Chrome Web Store, Firefox AMO, Apple App Store)
• Security Checks: When security protection is enabled, domain names are sent to BlockLang API over encrypted HTTPS connections
• No Telemetry: We do not send usage statistics, crash reports, or any analytics data

Contact Information

If you have questions about this Privacy Policy, please contact us at:

• Email: contact@blocklang.org
• App Store: Leave a review or contact through the App Store

Changes to This Policy

We may update this Privacy Policy occasionally. Any changes will be posted in this document with an updated "Last updated" date. Continued use of the extension after changes constitutes acceptance of the new policy.

Compliance

This Privacy Policy complies with:

• Apple App Store Guidelines
• General Data Protection Regulation (GDPR)
• California Consumer Privacy Act (CCPA)
• Other applicable privacy laws