Examine source code of Tabs Dashboard

{
  "name": "Tabs Dashboard",
  "version": "2.0.0",
  "description": "Tab Dashboard and Bookmark Manager",
  "manifest_version": 2,
  "icons": {
    "16": "assets/icons/icon16.png",
    "32": "assets/icons/icon32.png",
    "48": "assets/icons/icon48.png",
    "128": "assets/icons/icon128.png"
  },
  "chrome_url_overrides": {
    "newtab": "newtab/index.html"
  },
  "chrome_settings_overrides": {
    "homepage": "newtab/index.html"
  },
  "permissions": [
    "tabs",
    "storage",
    "bookmarks"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{e07e1f41-9ec7-434f-9a0d-1e4630c68ba2}",
      "strict_min_version": "42.0"
    }
  }
}