Examine source code of Subtitle Scooper

{
  "manifest_version": 2,
  "name": "Subtitle Downloader",
  "version": "1.0",
  "description": "Downloads subtitles from Netflix and YouTube through network requests.",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "downloads",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{dedc0b34-1708-470b-9328-2d849f5894be}"
    }
  }
}