Examine source code of PwdHash2

{
  "manifest_version": 2,
  "name": "PwdHash2",
  "version": "1.0.1",
  "default_locale": "en",
  "description": "Automatically generates per-site passwords if you prefix your password with @@ or F2.",
  "applications": {
    "gecko": {
      "id": "PwdHash2@GWuk.PwdHash2.github.com",
      "strict_min_version": "57.0"
    }
  },
  "author": "Stanford University, extended by GWu",
  "homepage_url": "https://github.com/GWuk/PwdHash2",
  "icons": {
    "48": "icons/pwdhash-48.png",
    "96": "icons/pwdhash-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/domain-extractor.js",
        "js/hashed-password.js",
        "js/stanford-pwdhash.js",
        "js/md5.js",
        "js/forge.min.js"
      ]
    }
  ],
  "options_ui": {
    "page": "content/options.html"
  },
  "permissions": [
    "storage"
  ]
}