Examine source code of Save to GoodLinks

{
  "manifest_version": 2,
  "default_locale": "en",
  "name": "__MSG_extension_name__",
  "short_name": "GoodLinks",
  "description": "__MSG_extension_description__",
  "version": "1.1.5",
  "homepage_url": "https://goodlinks.app",
  "author": "Ngoc Luu",
  "browser_specific_settings": {
    "gecko": {
      "id": "support@goodlinks.app"
    }
  },
  "icons": {
    "48": "images/icon-48.png",
    "64": "images/icon-64.png",
    "96": "images/icon-96.png",
    "128": "images/icon-128.png",
    "256": "images/icon-256.png",
    "512": "images/icon-512.png"
  },
  "web_accessible_resources": [
    "images/*",
    "winopener-fix.js"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "run_at": "document_end"
    },
    {
      "js": [
        "content-ck.js"
      ],
      "matches": [
        "https://*.apple-cloudkit.com/*"
      ],
      "run_at": "document_end"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_action": {
    "default_icon": {
      "16": "images/toolbar-icon-disabled-16.png",
      "19": "images/toolbar-icon-disabled-19.png",
      "32": "images/toolbar-icon-disabled-32.png",
      "38": "images/toolbar-icon-disabled-38.png"
    },
    "default_title": "__MSG_extension_name__"
  },
  "commands": {
    "save": {
      "suggested_key": {
        "default": "Ctrl+Shift+S",
        "mac": "MacCtrl+Shift+S"
      },
      "description": "__MSG_extension_description__"
    }
  },
  "permissions": [
    "contextMenus",
    "storage",
    "activeTab"
  ]
}