Examine source code of FPS Grid

{
  "manifest_version": 3,
  "name": "FPS Grid",
  "version": "1.5",
  "description": "Real gaming performance data for the hardware you're browsing. FPS benchmarks, price comparisons, instant results.",
  "homepage_url": "https://fpsgrid.com",
  "browser_specific_settings": {
    "gecko": {
      "id": "contact@fpsgrid.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "icons": {
    "16": "icon-16.png",
    "48": "icon-48.png",
    "128": "icon-128.png"
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "tabs",
    "clipboardWrite",
    "notifications",
    "alarms"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "detect_country.js",
        "utils.js",
        "auto-selector-generator.js",
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "FPS Grid",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon-16.png",
      "48": "icon-48.png",
      "128": "icon-128.png"
    }
  }
}