OriginalUI

About

OriginalUI is a comprehensive browser protection extension that defends against modern web threats through multiple layers of security.

  WHAT IT DOES

  • Element Removal — Automatically removes intrusive ads, pop-ups, newsletter modals, and tracking widgets using intelligent CSS selector rules. Works on any website with both built-in and custom rules you define.

  • Navigation Guardian — Intercepts suspicious cross-origin redirects before they happen. When a site tries to navigate you to an unfamiliar domain, you'll see a clear prompt to block or allow—stopping pop-unders and malicious redirects in their tracks.

  • Network Request Blocking — Blocks tracking requests and known malicious domains at the network level before they can load. Uses the modern declarativeNetRequest API for efficient, battery-friendly blocking.

  • Click Hijacking Protection — Detects and neutralizes invisible overlays and click-jacking attempts that try to trick you into unintended actions.

  HOW IT WORKS

  OriginalUI uses a defense-in-depth strategy. Instead of relying on a single blocking method, it combines DOM-level element removal, JavaScript interception, and network-level blocking to provide comprehensive coverage against evolving threats.

  All protection systems can be individually enabled or disabled. Whitelist sites you trust to exempt them from all protection—useful for banking sites, internal tools, or any domain you know is clean.

  CUSTOMIZATION

  • Create custom CSS selector rules to target specific elements on specific domains
  • Import and export your rules and settings
  • View real-time statistics on blocked elements and intercepted navigations
  • Toggle individual protection systems on or off

  PRIVACY

  OriginalUI operates entirely locally. No data is sent to external servers. All your settings, whitelists, and custom rules are stored in Chrome's local storage on your device.

  PERMISSIONS EXPLAINED

  • "Read and change all your data on all websites" — Required to remove unwanted elements and intercept malicious navigations across all sites you visit
  • Storage — Saves your settings and whitelist locally
  • Alarms — Schedules periodic cleanup tasks

  TECHNICAL DETAILS

  Built with React 19, Vite 7, and Manifest V3. Open source under GPL-3.0.

  Source code: github.com/LuChengChiu/OriginalUI