Examine source code of Simplest Ad Blocker Ever!

{
  "manifest_version": 2,
  "name": "Block Ads Now!",
  "version": "2.2",
  "description": "Block annoying ads on video streaming and websites instantly—enjoy faster, cleaner browsing without interruptions.",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "128": "icon128.png"
  },
  "browser_action": {
    "default_title": "Simplest Ad Blocker"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      },
      "id": "{7f953825-b576-4ec0-8b7a-d8034350f294}"
    },
    "gecko_android": {
      "strict_min_version": "120.0"
    }
  }
}