Examine source code of URL Replacer Pro

{
  "manifest_version": 2,
  "name": "URL Replacer Pro",
  "version": "1.0.1",
  "description": "Replace one token across up to 10 URL templates and open results in new tabs.",
  "icons": {
    "16": "128.png",
    "32": "128.png",
    "48": "128.png",
    "128": "128.png"
  },
  "permissions": [
    "storage",
    "contextMenus",
    "tabs",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "128.png",
      "32": "128.png",
      "48": "128.png",
      "128": "128.png"
    }
  },
  "commands": {
    "open-replaced-urls": {
      "suggested_key": {
        "default": "Alt+Shift+Q",
        "mac": "Ctrl+Shift+Q"
      },
      "description": "Prompt for input and open replaced URL(s)."
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "url-replacer-pro@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}