Examine source code of WebClipper

{
  "manifest_version": 2,
  "name": "WebClipper",
  "version": "1.0.0",
  "description": "一个用于内容收集的 Firefox 扩展，支持从任意网站提取文本和图片",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/icon.svg",
      "96": "icons/icon.svg"
    },
    "default_title": "WebClipper"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/script.js"
      ],
      "css": [
        "content/style.css"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "downloads",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "content/sidebar.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "36659441@qq.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}