User Agent 解析器
解析 user agent 字符串以识别浏览器、操作系统、设备类型和渲染引擎。
Examples:
User Agent Strings - 技术详情
User agent strings identify the browser, device, and OS making a request. They're used for analytics, content adaptation, and bot detection. Note that user agents can be spoofed, so don't rely on them for security.
命令行替代方案
# Get your user agent with curl\ncurl -s httpbin.org/user-agent\n\n# See all headers including user agent\ncurl -I https://example.com