Examine source code of WEE.BIO - Link Shortener

{
  "manifest_version": 3,
  "name": "wee.bio Link Shortener",
  "version": "1.5",
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@wee.bio",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "description": "Cette extension ne collecte aucune donnée personnelle. L'utilisation du stockage local et des permissions hôtes est limitée à la gestion des liens sur wee.bio."
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "notifications"
  ],
  "host_permissions": [
    "https://wee.bio/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon48.png"
    }
  }
}