Examine source code of Ysell Extension For Amazon

{
  "name": "Ysell Extension For Amazon",
  "description": "Amazon listing analysis. Calculation of profitability taking into account all costs.",
  "version": "3.0",
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "dev@ysell.pro",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.amazon.de/*",
        "https://www.amazon.com/*",
        "https://www.amazon.fr/*",
        "https://www.amazon.it/*",
        "https://www.amazon.es/*",
        "https://www.amazon.ca/*",
        "https://www.amazon.co.jp/*",
        "https://www.amazon.co.uk/*",
        "https://www.amazon.in/*",
        "https://www.amazon.nl/*",
        "https://*.amazon.ae/*",
        "https://*.amazon.com.au/*",
        "https://*.amazon.com.br/*",
        "https://*.amazon.com.mx/*",
        "https://*.amazon.com.tr/*",
        "https://*.amazon.eg/*",
        "https://*.amazon.pl/*",
        "https://*.amazon.sa/*",
        "https://*.amazon.se/*",
        "https://*.amazon.sg/*"
      ],
      "js": [
        "jquery.min.js",
        "content.js",
        "bootstrap.min.js",
        "highcharts.js"
      ],
      "css": [
        "style.css",
        "bootstrap.css"
      ]
    }
  ],
  "action": {
    "default_icon": {
      "16": "/images/ysell16.png",
      "32": "/images/ysell32.png",
      "48": "/images/ysell48.png",
      "128": "/images/ysell128.png"
    }
  },
  "icons": {
    "16": "/images/ysell16.png",
    "32": "/images/ysell32.png",
    "48": "/images/ysell48.png",
    "128": "/images/ysell128.png"
  }
}