Examine source code of YouTube Playlist Quick Delete

{
  "manifest_version": 3,
  "name": "YouTube Playlist Quick Delete",
  "version": "0.2.7",
  "description": "Adds a delete button directly on videos in your playlist. Saves you a few clicks since you won't have to use the action menu again!",
  "content_scripts": [
    {
      "js": [
        "scripts/content.js"
      ],
      "css": [
        "scripts/content.css"
      ],
      "matches": [
        "*://*.youtube.com/*"
      ],
      "run_at": "document_start"
    }
  ],
  "icons": {
    "16": "images/icon-16.png",
    "32": "images/icon-32.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{90244ff8-525e-4ae4-b286-579a26914225}",
      "strict_min_version": "109.0"
    }
  }
}