Examine source code of CS2 Charm Template Viewer

{
  "manifest_version": 3,
  "name": "CS2 Charm Template Viewer",
  "version": "1.3",
  "description": "Displays all charm template values from Steam inventory",
  "id": "cs2-charm-template-viewer@extension",
  "icons": {
    "480": "icon512.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "cs2-charm-template-viewer@extension",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "action": {
    "default_icon": {
      "480": "icon512.png"
    },
    "default_title": "CS2 Charm Template Viewer - Active on Steam inventory pages"
  },
  "permissions": [],
  "host_permissions": [
    "https://steamcommunity.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://steamcommunity.com/inventory/*",
        "https://steamcommunity.com/id/*/inventory*",
        "https://steamcommunity.com/profiles/*/inventory*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icon512.png"
      ],
      "matches": [
        "https://steamcommunity.com/*"
      ]
    }
  ]
}