Examine source code of Reeader - Minimal Reader

{
  "name": "Reeader - Minimal Reader",
  "version": "1.2.1",
  "description": "Distraction-free article reader with adjustable typography, multiple themes, and speed reading mode.",
  "manifest_version": 3,
  "permissions": [
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "reeader@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_icon": {
      "16": "images/reader16.png",
      "32": "images/reader32.png",
      "48": "images/reader48.png",
      "128": "images/reader128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start",
      "all_frames": false
    }
  ],
  "icons": {
    "16": "images/reader16.png",
    "32": "images/reader32.png",
    "48": "images/reader48.png",
    "128": "images/reader128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "images/*",
        "main.js",
        "main.css",
        "index.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}