Examine source code of Web Memo

{
  "manifest_version": 2,
  "name": "Web Memo",
  "version": "1.3.5",
  "description": "create notes and collections from websites you visit",
  "icons": {
    "16": "favicon.svg",
    "32": "favicon.svg",
    "48": "favicon.svg",
    "96": "favicon.svg"
  },
  "browser_action": {
    "default_icon": "favicon.svg",
    "default_title": "Web Memo"
  },
  "sidebar_action": {
    "default_icon": "favicon.svg",
    "default_title": "Web Memo",
    "default_panel": "sidebar/index.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "background-scripts/background.js"
    ]
  },
  "permissions": [
    "storage",
    "menus",
    "contextMenus",
    "tabs",
    "downloads"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "web-memo@w.h.com"
    }
  }
}