Examine source code of JourneyAL

{
  "manifest_version": 2,
  "name": "JourneyAL",
  "version": "3.0",
  "description": "Firefox Extension companion to JourneyAL",
  "homepage_url": "https://www.journey.al",
  "icons": {
    "48": "icons/iconb.png",
    "96": "icons/iconb@2x.png"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "bookmarks",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "https://www.journey.al/api/*",
    "*://*/*"
  ],
  "browser_action": {
    "default_icon": {
      "48": "icons/iconb.png"
    },
    "theme_icons": [
      {
        "light": "icons/iconb.png",
        "dark": "icons/iconbd.png",
        "size": 48
      }
    ],
    "default_title": "JourneyAL",
    "default_popup": "popup/login.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "journeyal.js",
        "popup/login.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "bkmark.js",
      "badge.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{185c6f39-351a-48e0-8db4-c52d13a78b2a}"
    }
  }
}