Examine source code of Task Reminder

{
  "manifest_version": 2,
  "name": "task reminder",
  "version": "1.2.1",
  "description": "Remind you your todo list right after you got distracted, e.g right after a youtube video, right after x amount of yt shorts, etc. Create your note by clicking on the extension, this will open a menu where you can enter your note and save it, said note will be display after a youtube video",
  "icons": {
    "512": "icon/icon.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "css": [
        "task_reminder.css"
      ],
      "js": [
        "task_reminder_yt.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icon/icon.png",
    "default_title": "Task Reminder",
    "default_popup": "task_reminder_ui.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4a9a44c7-854d-4a50-845a-e1932db12134}"
    }
  }
}