Examine source code of Stream Score

{
  "manifest_version": 3,
  "name": "StreamScore",
  "version": "1.0",
  "description": "Visualizes Movie Ratings (Rotten Tomatoes, IMDb, TMDb) directly inside your favorite streaming services.",
  "browser_specific_settings": {
    "gecko": {
      "id": "streamscore@helper",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent",
          "browsingActivity"
        ],
        "reasons": {
          "websiteContent": "Extracts movie and TV show titles from streaming platforms to fetch corresponding ratings from OMDb and TMDb.",
          "browsingActivity": "Detects when you are on supported streaming domains (Netflix, Amazon, Google) to trigger the rating injection logic."
        }
      }
    }
  },
  "permissions": [
    "storage",
    "unlimitedStorage",
    "activeTab"
  ],
  "host_permissions": [
    "https://www.google.com/search*",
    "https://www.netflix.com/*",
    "https://www.amazon.com/gp/video/*",
    "https://www.amazon.de/gp/video/*",
    "https://www.amazon.co.uk/gp/video/*",
    "https://www.omdbapi.com/*",
    "https://api.themoviedb.org/*"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "StreamScore Settings",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.google.com/search*",
        "*://*.google.de/search*"
      ],
      "css": [
        "styles.css"
      ],
      "js": [
        "content-google.js"
      ]
    },
    {
      "matches": [
        "*://*.netflix.com/*",
        "*://*.netflix.de/*"
      ],
      "css": [
        "styles.css"
      ],
      "js": [
        "content-netflix.js"
      ]
    },
    {
      "matches": [
        "*://*.amazon.com/*",
        "*://*.amazon.de/*",
        "*://*.amazon.co.uk/*",
        "*://*.primevideo.com/*"
      ],
      "css": [
        "styles.css"
      ],
      "js": [
        "content-amazon.js"
      ]
    }
  ]
}