Examine source code of ManicTime Url Extractor

{
  "name": "ManicTime Url Tracker",
  "version": "1.2",
  "manifest_version": 2,
  "description": "Sends urls to local ManicTime installation. Only works if ManicTime is installed locally.",
  "icons": {
    "16": "images/icon-16.png",
    "128": "images/icon-128.png"
  },
  "default_locale": "en",
  "background": {
    "scripts": [
      "scripts/serverManager.js",
      "scripts/background.js",
      "scripts/bowser.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "@manictimeurlextractor",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      }
    }
  },
  "browser_action": {
    "default_icon": "images/icon-16.png",
    "default_title": "ManicTime",
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs"
  ]
}