Secret Browser Commands

Quickly access hidden internal URLs for Chromium-based browsers (like chrome://, edge://, etc.).

Note that not all URLs are supported by all browsers.

Compatible Browsers

This extension supports the following Chromium-based browsers:

• Arc - arc://
• Brave - brave://
• ChatGPT Atlas - atlas:// (uses chrome:// internally)
• Google Chrome - chrome://
• Dia - dia://
• Microsoft Edge - edge://
• Opera - opera://
• Perplexity Comet - browser:// (uses chrome:// internally)
• Vivaldi - vivaldi://

Each browser uses its own URL scheme to access internal pages, though they share many common paths due to their Chromium foundation.

Features

• Search and filter a comprehensive list of secret browser URLs.
• Open URLs in any supported Chromium browser.
• Access debugging tools, internal settings, and diagnostic pages.
• View browser-specific features and configurations.
• Filter debug and untrusted URLs via preferences (both hidden by default).

⚠️ Important Warnings

Debug URLs

This extension includes debug commands that are intended exclusively for browser developers testing crash reporting and stability. These commands can:

• Crash your browser immediately (e.g., chrome://crash, chrome://gpucrash)
• Hang your browser indefinitely (e.g., chrome://hang, chrome://gpuhang)
• Terminate browser processes (e.g., chrome://kill, chrome://quit)
• Cause data loss if you have unsaved work

These URLs are hidden by default. Only enable them in preferences if you are a developer who understands their purpose and accepts the risks.

Chrome-Untrusted URLs

The extension also includes chrome-untrusted:// URLs, which run in isolated security contexts with restricted privileges. These URLs:

• Are designed for internal browser features that handle untrusted content
• Run in heavily sandboxed environments separate from normal browser pages
• May cause unexpected behavior, errors, or crashes when accessed directly
• Are not intended for direct user interaction

Examples include chrome-untrusted://compose, chrome-untrusted://print, and chrome-untrusted://privacy-sandbox-dialog.

These URLs are also hidden by default. Only enable them if you understand the security implications and are troubleshooting specific browser features.

Sources

The secret browser URLs in this extension are derived from official Chromium source code, specifically:

• chrome_url_data_manager_browsertest.cc - Comprehensive list of internal Chrome URLs used for testing
• Official Chromium documentation and source code

These URLs provide access to internal browser pages for debugging, diagnostics, configuration, and feature management. While most URLs work across all Chromium-based browsers, some may be browser-specific or platform-dependent.