Examine source code of WebJourney

{
  "name": "Journey",
  "version": "1.0.2",
  "description": "Extension to manage your web journey.",
  "manifest_version": 2,
  "author": "Whiskay",
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Journey"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*"
      ],
      "js": [
        "background.js",
        "worker.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "scripting",
    "tabs",
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_page": "options.html",
  "browser_specific_settings": {
    "gecko": {
      "id": "journey1.0@whiskay.dev"
    }
  },
  "icons": {
    "16": "./icon16.png",
    "32": "./icon32.png",
    "48": "./icon48.png",
    "128": "./icon128.png"
  }
}