Examine source code of Album

{
  "manifest_version": 2,
  "version": "2.0.5",
  "default_locale": "en",
  "name": "Album",
  "short_name": "Album",
  "description": "Builds a list with the images present on the current page and exports it as text, mosaic or carousel.",
  "browser_action": {
    "default_popup": "./popup/index.html",
    "default_title": "Album",
    "default_icon": {
      "16": "icons/icon16.png",
      "19": "icons/icon19.png",
      "24": "icons/icon24.png",
      "32": "icons/icon32.png",
      "38": "icons/icon38.png",
      "48": "icons/icon48.png"
    }
  },
  "background": {
    "scripts": [
      "./sw/background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "activeTab",
    "notifications",
    "storage",
    "tabs"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "19": "icons/icon19.png",
    "24": "icons/icon24.png",
    "32": "icons/icon32.png",
    "38": "icons/icon38.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png",
    "192": "icons/icon192.png"
  },
  "web_accessible_resources": [
    "icons/icon16.png",
    "icons/icon19.png",
    "icons/icon24.png",
    "icons/icon32.png",
    "icons/icon38.png",
    "icons/icon48.png",
    "icons/icon96.png",
    "icons/icon128.png",
    "icons/icon192.png",
    "./popup/index.html",
    "./sw/background.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2dcaba3e-1c50-4b23-bea1-7b373b9a1b22}"
    }
  }
}