Examine source code of mailto:me

{
  "manifest_version": 2,
  "name": "mailto:me",
  "version": "1.0.0",
  "description": "Mail websites to yourself for archiving or reading them later",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/action-16.png",
      "19": "icons/action-19.png",
      "32": "icons/action-32.png",
      "38": "icons/action-38.png"
    },
    "default_title": "mailto:me"
  },
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ]
  },
  "permissions": [
    "activeTab",
    "clipboardWrite",
    "storage",
    "contextMenus"
  ],
  "options_ui": {
    "page": "options.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "mailto@me",
      "strict_min_version": "50.0"
    }
  }
}