Examine source code of SentiaRead

{
  "manifest_version": 2,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "version": "1.0.0",
  "icons": {
    "16": "icon-16.png",
    "32": "icon-32.png",
    "48": "icon-48.png",
    "128": "logo.png"
  },
  "default_locale": "en",
  "permissions": [
    "storage",
    "contextMenus",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{c13f4761-7a06-4592-913a-d2aba212abdd}"
    }
  },
  "web_accessible_resources": [
    "logo.png",
    "content-scripts/reader-mode.css"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "SentiaRead",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "open_in_tab": false,
    "page": "options.html"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content-scripts/reader-mode.js"
      ]
    }
  ]
}