Examine source code of Text Analyzer

{
  "manifest_version": 2,
  "name": "Text Analyzer",
  "version": "1.0.7",
  "description": "Analyze selected text on any web page: count words, characters, sentences, reading time, character frequency. Supports quick copy and right-click analysis.",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon.png"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+A"
      }
    }
  },
  "browser_action": {
    "default_title": "Text Analyzer",
    "default_popup": "popup/main.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "96": "icons/icon-96.png"
    }
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "clipboardWrite"
  ],
  "background": {
    "scripts": [
      "background/context.js"
    ]
  },
  "author": "Duc Giap",
  "developer": {
    "name": "Duc Giap"
  },
  "omnibox": {
    "keyword": "txt"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "ducgiap193@gmail.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "description": "All text analysis happens entirely on-device. No data is ever sent to any server."
      }
    }
  }
}