Lumen Browser

A lightweight, privacy-focused Android browser built on Chromium (Android WebView) — Brave-style ad/tracker blocking with cosmetic filtering and anti-fingerprinting.

Features

• Chromium-based — uses Android's WebView (powered by Chromium)
• Network-level ad blocking — 300+ ad host blocklist + URL path heuristics
• Network-level tracker blocking — 400+ tracker host blocklist
• Cosmetic filtering — CSS element hiding (removes ad placeholders after page loads, like uBlock Origin/Brave)
• Anti-fingerprinting — canvas/WebGL spoofing, navigator property normalization
• WebRTC disable — prevents IP leaks through VPNs
• HTTPS upgrade — HTTP requests upgraded to HTTPS
• Lumen Search — custom meta-search engine aggregating DuckDuckGo, Bing, and Wikipedia
• Search suggestions — live autocomplete
• Tabs — multi-tab browsing with tab management
• Bookmarks & History — stored as JSON
• Find in page — injected JS find bar
• Dark mode — system or forced
• Downloads — in-app download manager
• Extension support — Chrome MV3 extension loading with popup support
• Home-screen widget — quick search widget

Permissions

Only 3:

• INTERNET — load web pages
• ACCESS_NETWORK_STATE — check connectivity
• DOWNLOAD_WITHOUT_NOTIFICATION — save downloaded files

No tracking, no analytics, no background services.

Build

./gradlew assembleDebug
# APK: app/build/outputs/apk/debug/app-debug.apk

Requirements: JDK 17, Android SDK (targetSdk 35, minSdk 26).