Examine source code of Diaspora - Optimizer

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "short_name": "diasporaOpt",
  "description": "__MSG_appDesc__",
  "default_locale": "en",
  "version": "0.0.5.5",
  "author": "Ole Albers",
  "permissions": [
    "storage",
    "contextMenus",
    "https://*/*"
  ],
  "content_scripts": [
    {
      "run_at": "document_start",
      "matches": [
        "https://*/*"
      ],
      "js": [
        "js/lib/jquery-3.4.1.js",
        "js/lib/upndown.bundle.js",
        "js/opt/log.js",
        "js/opt/optimize.js",
        "js/opt/setup.js",
        "js/opt/comments.js",
        "js/opt/messages.js"
      ]
    }
  ],
  "icons": {
    "16": "images/icons/opt16.png",
    "48": "images/icons/opt48.png",
    "128": "images/icons/opt128.png"
  },
  "browser_action": {
    "default_icon": "images/icons/opt48.png"
  },
  "web_accessible_resources": [
    "images/*",
    "_locales/*",
    "css/*"
  ]
}