Examine source code of Marktodo

{
  "name": "Marktodo",
  "auther": "leyoonafr <codeacme17@gmail.com>",
  "description": "Browser extension allows customers to mark links/knowledge to to-do lists",
  "version": "1.0.0",
  "manifest_version": 2,
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "default_locale": "en",
  "permissions": [
    "contextMenus",
    "storage",
    "webNavigation",
    "activeTab",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "browser_action": {
    "default_popup": "src/popup.html"
  },
  "background": {
    "scripts": [
      "src/background-scripts/index.js"
    ],
    "page": "src/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/content-scripts/index.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ea8d7cd4-ae37-4464-8ad4-b65928f01a3e}"
    }
  }
}