Examine source code of Sources de confiance

{
  "name": "Sources de Confiance",
  "description": "Complèter Google, Bing et Qwant avec des ressources utiles aux acteurs publics.",
  "version": "2.3.2",
  "manifest_version": 2,
  "icons": {
    "24": "assets/icons/sdc-24.png",
    "48": "assets/icons/sdc-48.png",
    "128": "assets/icons/sdc-128.png"
  },
  "browser_action": {
    "default_title": "Sources de Confiance",
    "default_popup": "./popup/popup.html"
  },
  "options_ui": {
    "page": "./options/options.html",
    "browser_style": true,
    "chrome_style": true
  },
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.google.com/search*",
        "https://*.google.fr/search*",
        "https://*.qwant.com/*",
        "https://*.bing.com/search*"
      ],
      "js": [
        "browser-polyfill.js",
        "./main.js"
      ],
      "css": [
        "./main.css"
      ]
    },
    {
      "matches": [
        "https://publica.unsearch.net/*"
      ],
      "js": [
        "./xboard/index.js"
      ]
    },
    {
      "matches": [
        "https://accounts.unsearch.net/*"
      ],
      "js": [
        "./accounts/index.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "assets/icons/*",
    "assets/logos/*",
    "**.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{1a4ffb3b-b4bf-4e30-825c-23b95daf25e0}"
    }
  }
}