Examine source code of IMDb Rating Inline

{
  "manifest_version": 3,
  "name": "IMDb Rating Inline",
  "version": "1.0",
  "description": "IMDb Rating Inline - Instantly see IMDb ratings without leaving the page you're on. This extension automatically detects IMDb codes (like tt1234567) on any webpage and displays the rating directly next to them as a small badge.",
  "permissions": [
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>",
    "https://www.omdbapi.com/*",
    "https://mdblist.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "IMDb Rating Einstellungen",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "kyle.urban@protonmail.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}