HTTP 狀態碼檢測
檢查網址的 HTTP 回應狀態和重定向路徑
google.com
github.com
301 測試
404 測試
檢測中...
200 OK
最終網址
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狀態碼
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回應時間
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內容類型
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Frequently Asked Questions
What do HTTP status codes mean?
1xx: Informational, 2xx: Success (200 OK), 3xx: Redirection (301 Moved), 4xx: Client Error (404 Not Found), 5xx: Server Error (500 Internal Server Error).
What is the difference between 301 and 302?
301 is a permanent redirect (SEO-friendly, passes link juice). 302 is a temporary redirect (search engines keep indexing the original URL).
How to fix 403 Forbidden error?
Check file permissions, verify .htaccess rules, ensure the directory index file exists, and confirm your IP isn't blocked by the server firewall.
What does a 502 Bad Gateway error mean and how do I fix it?
A 502 means a server acting as a gateway received an invalid response from an upstream server. Common fixes include restarting the upstream server, checking proxy settings, or increasing timeout values.
What is the difference between 401 Unauthorized and 403 Forbidden?
401 means authentication is required but was not provided or is invalid. 403 means the server understood the request but refuses to authorize it, even with valid credentials.
常見 HTTP 狀態碼
| 狀態碼 | 說明 |
|---|---|
| 200 | OK - 請求成功 |
| 301 | Moved Permanently - 永久重定向 |
| 302 | Found - 臨時重定向 |
| 304 | Not Modified - 未修改（快取） |
| 400 | Bad Request - 錯誤的請求 |
| 401 | Unauthorized - 未授權 |
| 403 | Forbidden - 禁止存取 |
| 404 | Not Found - 找不到頁面 |
| 405 | Method Not Allowed - 方法不被允許 |
| 422 | Unprocessable Entity - 無法處理的實體 |
| 500 | Internal Server Error - 伺服器錯誤 |
| 502 | Bad Gateway - 閘道錯誤 |
| 503 | Service Unavailable - 服務不可用 |
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