Examine source code of Focus To Do

{
  "action": {
    "default_popup": "popup.html",
    "default_title": "Focus To Do"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "description": "A simple Pomodoro Timer to help you focus on your tasks. Block Distracting Websites. Unleash Productivity.",
  "icons": {
    "128": "icons/focus-purple.png"
  },
  "manifest_version": 3,
  "host_permissions": [
    "https://*/*",
    "http://*/*"
  ],
  "name": "Focus To Do",
  "permissions": [
    "storage",
    "tabs",
    "declarativeNetRequest"
  ],
  "version": "1.15",
  "browser_specific_settings": {
    "gecko": {
      "id": "{6cb05e6b-9a75-48f0-9da7-1263b4955da3}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}