HTTP Status Code Checker

HTTP Status Code Checker

The HTTP Status Code Checker is an online Web HTTP testing tool. Enter a URL to retrieve the HTTP status code, response time, HTTP version, content type, redirect count, final URL and raw HTTP response headers. It helps quickly determine whether a webpage responds normally.

What Is an HTTP Status Code?

An HTTP status code is a three-digit code returned by a Web server to indicate the result of an HTTP request. Status codes can quickly show whether a webpage request succeeded, whether a redirect occurred or whether a client-side or server-side error occurred.

Main Features

• Check webpage HTTP status codes online
• Determine whether a webpage responds normally
• View server response time
• View the HTTP protocol version
• View the webpage Content-Type
• Count HTTP redirects
• View the final URL
• View raw HTTP response headers

Common HTTP Status Codes

200 OK

HTTP 200 means that the request was successfully processed and the server returned the requested resource. Website homepages and normal webpages commonly return 200.

301 Moved Permanently

HTTP 301 indicates that the requested resource has been permanently moved to a new URL. The server normally provides the new address through the Location response header.

302 Found

HTTP 302 indicates that the requested resource has been temporarily redirected. The client normally continues to the new address returned by the server.

403 Forbidden

HTTP 403 means that the server understood the request but refuses to provide the requested resource. Common causes include access restrictions, firewall rules and security policies.

404 Not Found

HTTP 404 means that the server could not find the requested resource. This usually indicates that the page does not exist or the URL is incorrect.

500 Internal Server Error

HTTP 500 indicates an internal server error. The server application, code or runtime environment may need to be checked.

502 Bad Gateway

HTTP 502 usually means that a gateway or proxy server received an invalid response from an upstream server. It is commonly associated with reverse proxies, load balancers and upstream service failures.

503 Service Unavailable

HTTP 503 indicates that the server is temporarily unable to handle the request. Possible causes include server overload, maintenance or temporary upstream service unavailability.

What Information Can the HTTP Status Code Checker Show?

HTTP Status Code

The status code is one of the most important results because it directly indicates whether the URL returned a successful response, redirect or error.

Response Time

Response time represents the time from sending the request to receiving the server response. It can help analyze website network performance and server responsiveness.

Final URL

If the target URL redirects, the tool displays the final address reached after the redirects. This is useful for checking HTTP-to-HTTPS redirects, domain redirects and URL canonicalization.

HTTP Version

The HTTP version indicates the protocol version used for the HTTP communication, such as HTTP/1.1, and can help analyze the server response.

Content Type

Content-Type identifies the media type returned by the server. HTML pages commonly use text/html, while JSON APIs commonly use application/json.

Redirect Count

The redirect count indicates how many redirects occurred between the original URL and the final URL. Excessive redirects may increase access latency and make crawling and navigation more complex.

Raw Response Headers

HTTP response headers contain detailed information returned by the server, including Server, Content-Type, Location, cache policies and security-related response headers. They are useful for website development and server configuration troubleshooting.

How to Check an HTTP Status Code

1. Enter the complete webpage URL in the URL field.
2. Confirm that the URL uses a valid HTTP or HTTPS protocol.
3. Click the check button to submit the request.
4. Wait for the server to complete the HTTP request.
5. Review the HTTP status code, response time, redirects and response headers.

HTTP Status Code Checker Use Cases

Website Troubleshooting

When a webpage cannot be accessed, the HTTP status code can help determine whether the issue is a missing page, denied access, server error or gateway problem.

SEO Checking

SEO professionals can check whether webpages return 200, whether unexpected 301 or 302 redirects exist and whether 404 errors occur. This can help identify crawling and indexing problems.

Website Development Debugging

Developers can inspect the HTTP status, Content-Type, final URL and response headers of webpages and APIs to troubleshoot HTTP request configuration problems.

Server Operations

Website administrators can use response time, HTTP version, Server headers and status codes to analyze Web servers, reverse proxies and upstream services.

Why Can an HTTP Status Code Change?

The same URL may return different HTTP status codes at different times. Server load, CDN nodes, WAF rules, cache policies, request frequency and backend application status can affect the final response. A single check should therefore be analyzed together with the actual operating environment.

Why Can a Browser Open a Page While the Checker Returns an Error?

Some websites apply different access policies based on the User-Agent, IP address, request frequency, cookies or geographic location. Therefore, browser results may differ from automated HTTP checking results.

Why Does HTTP 200 Not Necessarily Mean the Webpage Is Working Correctly?

HTTP 200 only indicates that the server successfully returned an HTTP response. It does not prove that the page logic is working correctly. For example, a server may return an error page with an HTTP 200 status, so the response content and application status should also be considered.

HTTP Status Code Checker vs. Online URL Checker

The HTTP Status Code Checker focuses primarily on HTTP status codes and protocol response information, while an Online URL Checker may also display network information such as the server IP and server information. Both tools can be used to analyze website access status, but their focus is different.

Usage Notes

HTTP status check results represent the response received when the target URL is accessed from the current checking environment. They do not necessarily represent results from all regions and networks. For a broader website availability assessment, combine HTTP checks with DNS resolution, server status, network connectivity and application logs.