HTTP 請求檢查器
從你的瀏覽器擷取 URL 並檢查狀態和標頭。受 CORS 限制：不允許跨來源讀取的目標無法檢查。
使用方法
Enter a URL, choose GET or HEAD, and press Send request. Your browser fetches the URL and the page shows the status, the final URL after redirects, the elapsed time and every response header the browser is allowed to read. A missing scheme is filled in as https://. Requests time out after 20 seconds.
注意事項
This tool runs entirely in your browser and uses no proxy. If a site does not allow CORS (Access-Control-Allow-Origin), the browser blocks reading the response even when the server answered fine, and the check reports a failure. That is browser security working as designed, not a bug. To inspect arbitrary servers reliably, use a command-line tool such as curl -I.
常見問題
Why does example.com work but my site fails?
Usually CORS: unless the target returns Access-Control-Allow-Origin, the browser refuses to expose the response. It says nothing about whether the server is up.
Why do I only see a few headers?
Cross-origin responses only expose a small standard set of headers unless the server opts in with Access-Control-Expose-Headers.