Examine source code of Instant Gaming

{
  "name": "Instant Gaming",
  "version": "3.4.0",
  "manifest_version": 2,
  "description": "Browse the web for your favorite games and always know if they are available at Instant-Gaming.com!",
  "homepage_url": "https://www.instant-gaming.com",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon48.png"
  },
  "default_locale": "en",
  "permissions": [
    "https://local.instant-gaming.com/*",
    "https://www.instant-gaming.com/*"
  ],
  "background": {
    "scripts": [
      "src/bg/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://store.steampowered.com/*",
        "https://www.dlcompare.com/*",
        "https://www.dlcompare.fr/*",
        "https://www.dlcompare.es/*",
        "https://www.dlcompare.de/*",
        "https://www.dlcompare.pt/*",
        "https://www.allkeyshop.com/*",
        "https://www.keyforsteam.de/*",
        "https://www.goclecd.fr/*",
        "https://gocdkeys.com/*",
        "https://www.jeuxvideo.com/*",
        "https://www.kinguin.net/*",
        "https://www.g2a.com/*",
        "https://www.youtube.com/*",
        "https://www.twitch.tv/*",
        "https://www.gamivo.com/*",
        "https://www.gamekult.com/*",
        "https://www.cdkeys.com/*",
        "https://www.amazon.fr/*",
        "https://www.amazon.es/*",
        "https://www.amazon.de/*",
        "https://www.amazon.en/*",
        "https://www.amazon.it/*",
        "https://www.amazon.com/*",
        "https://www.ea.com/*",
        "https://*.ign.com/*",
        "https://www.gamespot.com/*",
        "https://store.epicgames.com/*",
        "https://store.playstation.com/*",
        "https://www.xbox.com/*",
        "https://www.pcgamer.com/*",
        "https://www.everyeye.it/*",
        "https://www.eurogamer.net/*",
        "https://www.eurogamer.cz/*",
        "https://www.eurogamer.de/*",
        "https://www.eurogamer.es/*",
        "https://www.eurogamer.it/*",
        "https://www.eurogamer.nl/*",
        "https://www.eurogamer.pl/*",
        "https://www.eurogamer.pt/*",
        "https://www.nintendo.com/*",
        "https://www.gamesradar.com/*"
      ],
      "css": [
        "src/inject/css/amazon.css",
        "src/inject/css/cdkeys.css",
        "src/inject/css/ea.css",
        "src/inject/css/epicgames.css",
        "src/inject/css/eurogamer.css",
        "src/inject/css/everyeye.css",
        "src/inject/css/g2a.css",
        "src/inject/css/gamespot.css",
        "src/inject/css/gamesradar.css",
        "src/inject/css/gamivo.css",
        "src/inject/css/ign.css",
        "src/inject/css/inject.css",
        "src/inject/css/jeuxvideos.css",
        "src/inject/css/kinguin.css",
        "src/inject/css/nintendo.css",
        "src/inject/css/pcgamer.css",
        "src/inject/css/playstation.css",
        "src/inject/css/steam.css",
        "src/inject/css/twitch.css",
        "src/inject/css/xbox.css",
        "src/inject/css/youtube.css"
      ],
      "js": [
        "js/jquery-3.7.1.min.js",
        "src/inject/inject.js"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "images/logo3.png",
    "images/logo.svg",
    "images/logo-horizontal.svg",
    "fonts/barlow-medium.woff2",
    "fonts/barlow-regular.woff2"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{b5dd9324-33b6-4ef0-81b6-97496dd6e81d}"
    }
  }
}