Examine source code of Lizard

{
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "lizard@webExtension.arielg.il",
      "strict_min_version": "56.0"
    }
  },
  "name": "Lizard",
  "version": "1.20",
  "description": "Select and remove annoying or unnecessary elements from a page. Great for printing and readability.",
  "author": "arielg",
  "permissions": [
    "<all_urls>",
    "tabs",
    "menus",
    "webNavigation",
    "notifications",
    "clipboardWrite",
    "downloads",
    "storage"
  ],
  "icons": {
    "16": "icons/lizard-16.png",
    "32": "icons/lizard-32.png",
    "48": "icons/lizard-48.png"
  },
  "web_accessible_resources": [
    "icons/lizard-32.png",
    "icons/leftClick.png",
    "icons/xpModeBg.png"
  ],
  "browser_action": {
    "browser_style": true,
    "default_title": "Lizard [OFF]",
    "default_icon": {
      "16": "icons/lizard-gray-16.png",
      "32": "icons/lizard-gray-32.png",
      "48": "icons/lizard-gray-48.png"
    }
  },
  "commands": {
    "kb-toggle-lizard-state": {
      "suggested_key": {
        "default": "Ctrl+Shift+L"
      },
      "description": "Start Lizard Session"
    },
    "kb-reload-lizard-extension": {
      "suggested_key": {
        "default": "Ctrl+Shift+Down"
      },
      "description": "Reload Extension"
    },
    "kb-reload-page-wo-alterations": {
      "description": "Reload Current Page w/o Alterations"
    },
    "kb-manage-alterations-rules": {
      "description": "Manage Alterations Rules..."
    }
  },
  "background": {
    "scripts": [
      "common.js",
      "lizardDB/lizardDB.js",
      "background.js"
    ]
  },
  "options_ui": {
    "browser_style": true,
    "page": "preferences/preferences.html"
  }
}