Examine source code of Context Cite Link

{
  "manifest_version": 2,
  "name": "Context Cite Link",
  "version": "1.2resigned1",
  "description": "__MSG_extensionDescription__",
  "author": "Kwan",
  "applications": {
    "gecko": {
      "id": "context-cite-link@kwan.perix.co.uk",
      "strict_min_version": "60.0"
    }
  },
  "default_locale": "en",
  "permissions": [
    "menus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true
    }
  ]
}