Dislike YouTube 2021

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 3,
  "name": "Dislike YouTube 2021",
  "version": "1.0.0",
  "minimum_chrome_version": "88",
  "icons": {
    "48": "thumbs48.png",
    "128": "thumbs128.png"
  },
  "host_permissions": [
    "*://*.youtube.com/*"
  ],
  "action": {
    "default_popup": "popup.html"
  },
  "background": {
    "service_worker": "background.js"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/watch?v=*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "externally_connectable": {
    "matches": [
      "*://*.youtube.com/*"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "insert.js"
      ],
      "matches": [
        "*://*.youtube.com/*"
      ]
    }
  ]
}