Examine source code of eIDAS QWAC Validator

{
  "manifest_version": 2,
  "name": "eIDAS QWAC Validator",
  "author": "Agenzia per l'Italia Digitale",
  "developer": {
    "name": "Agenzia per l'Italia Digitale",
    "url": "https://www.agid.gov.it"
  },
  "version": "5.4",
  "description": "Check if website is certificated eIDAS QWAC",
  "icons": {
    "128": "img/eidas_128.jpg"
  },
  "background": {
    "scripts": [
      "lib/asn1js/hex.js",
      "lib/asn1js/int10.js",
      "lib/asn1js/oids.js",
      "lib/asn1js/base64.js",
      "lib/asn1js/asn1.js",
      "lib/asn1js/dom.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "permissions": [
    "tabs",
    "activeTab",
    "webRequest",
    "webRequestBlocking",
    "storage",
    "notifications",
    "<all_urls>"
  ],
  "page_action": {
    "default_icon": "img/eidas_off.png",
    "default_title": "eIDAS QWAC Validator",
    "show_matches": [
      "*://*/*"
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "browser_style": true,
    "open_in_tab": false
  }
}