Examine source code of u-Blocker Lite: Fast & Private Ad Blocker

{
  "manifest_version": 3,
  "name": "u-Blocker Lite: Fast & Private Ad Blocker",
  "version": "1.1.3",
  "description": "Block ads instantly. Speed up your browser. Protect your privacy. Lightweight and privacy-focused.",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "declarativeNetRequest",
    "declarativeNetRequestFeedback",
    "scripting",
    "storage",
    "tabs"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "u-blocker-lite@harshdeepsingh.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png"
    },
    "default_title": "u-Blocker"
  },
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_ads",
        "enabled": true,
        "path": "rules/ads.json"
      },
      {
        "id": "ruleset_privacy",
        "enabled": false,
        "path": "rules/privacy.json"
      },
      {
        "id": "ruleset_social",
        "enabled": false,
        "path": "rules/social.json"
      },
      {
        "id": "ruleset_malware",
        "enabled": false,
        "path": "rules/malware.json"
      }
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ]
}