Examine source code of Embed bs.to

{
  "manifest_version": 2,
  "name": "Embed bs.to",
  "version": "1.7.2",
  "description": "Have every host embed in the site instead of just having displayed the URL. Compatible with bs.to uncaptcha.",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "permissions": [
    "*://*.bs.to/serie/*",
    "*://*.burningseries.co/serie/*",
    "*://*.burningseries.sx/serie/*",
    "*://*.burningseries.ac/serie/*",
    "*://*.burningseries.vc/serie/*",
    "*://*.burningseries.cx/serie/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.bs.to/serie/*",
        "*://*.burningseries.co/serie/*",
        "*://*.burningseries.sx/serie/*",
        "*://*.burningseries.ac/serie/*",
        "*://*.burningseries.vc/serie/*",
        "*://*.burningseries.cx/serie/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "embed@bs.to",
      "strict_min_version": "55.0"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self'"
}