Examine source code of E-mailFinder

{
  "manifest_version": 2,
  "name": "Ma première extension",
  "description": "Ceci est une extension de base",
  "version": "1.0",
  "icons": {},
  "browser_action": {
    "default_icon": "logo.png",
    "default_popup": "index.html"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "https://*/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "script.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{3fcc4e2e-8c58-4f6b-af94-fc99ec5e63f4}"
    }
  }
}