Examine source code of Find Email Addresses

{
  "description": "Quickly see and copy any email addresses found on a page.",
  "manifest_version": 2,
  "name": "Find Email Addresses",
  "version": "1.2",
  "homepage_url": "https://cudaap.com/firefox-extension-find-email-addresses.php",
  "icons": {
    "24": "icons/cudaap.svg",
    "48": "icons/cudaap.svg",
    "96": "icons/cudaap.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "findEmail.js"
      ]
    }
  ],
  "permissions": [
    "storage"
  ]
}