HTTP Status Code Checker

An HTTP status is the code a server returns, such as 200, 301, 404, or 500. Response time is how long that answer took, and the server IP is the address that answered. This screen displays those fields without making the request.

If the URL contains 404, the panel says 404. If it contains redirect or 301, the panel says 301. If it contains 500 or error, the panel says 500. Anything else is 200. That is string matching, not an HTTP client.

Status code is one of the values HTTP Status Code Checker puts on screen. The code is what a server returns, such as 200 or 404. The sample picks 404, 301, 500, or 200 by searching the URL text. A URL that merely contains the digits 404 is not a 404 response.

Read Reason phrase on its own before you mix it with the other rows. The words beside the code, such as Not Found or Moved Permanently. They follow the keyword branch, not a status line from a server. Do not paste them into an uptime report.

Response time answers a narrower question than the headline number. Time is how long the answer took. The sample draws about 50 to 550 milliseconds. The draw changes when you click again. The server did not get faster.

Treat Server IP as a label with a specific job. The address that answered. The sample builds a random 192.168 address. That range is private. It is not the public origin.

The Keyword branches line is worth a full stop. The matcher looks for 404, redirect, 301, 500, and error. Those substrings select the code. A healthy URL that happens to include the word error will be shown as 500.

192.168 addresses are private. A public website will not answer from a random address in that range. The response time is a random value between about 50 and 550 milliseconds, redrawn each run.

If you remember one sequence from HTTP Status Code Checker, remember the fields in the order they change a decision. Status code matters because The code is what a server returns, such as 200 or 404. In practice, The sample picks 404, 301, 500, or 200 by searching the URL text. The mistake to avoid is this: A URL that merely contains the digits 404 is not a 404 response. Reason phrase matters because The words beside the code, such as Not Found or Moved Permanently. In practice, They follow the keyword branch, not a status line from a server. The mistake to avoid is this: Do not paste them into an uptime report. Response time matters because Time is how long the answer took. In practice, The sample draws about 50 to 550 milliseconds. The mistake to avoid is this: The draw changes when you click again. The server did not get faster. Server IP matters because The address that answered. In practice, The sample builds a random 192.168 address. The mistake to avoid is this: That range is private. It is not the public origin. Keyword branches matters because The matcher looks for 404, redirect, 301, 500, and error. In practice, Those substrings select the code. The mistake to avoid is this: A healthy URL that happens to include the word error will be shown as 500. After that, the checks are simple. You did not treat a keyword in the URL as a live status. You ignored the random milliseconds. You did not block the 192.168 address. You did not call a 301 a followed redirect. A real HTTP client is the source for the code you will report.

Keep HTTP Status Code Checker as this step only. When the job moves on, the Redirect Checker is the next page: Redirect Checker takes a starting URL and lists hops with status codes and a final status. The Robots.txt Generator covers a different piece of the same work: Robots.txt Generator builds a robots.txt file from an allow or disallow default, optional paths, a crawl delay, and a sitemap URL.