HTTP / HTTPS Header Checker Sniffer

This is a simple SEO tool that let you see the header of a website for you to analyze.

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Why is it important that you understand and know about the header response of your website?

The following are the reasons why its important that you have an idea on what your visitors actually received behind their browsers:

  • Website Performance: The header response includes vital information about the performance of the website, such as the HTTP status code, response time, and cache-control headers. Watching the header response might assist you in identifying and correcting performance issues.
  • SEO: Header replies are used by search engine crawlers to analyze the structure and content of your page. A well-structured header response can assist boost your website's exposure and rating in search engines.
  • User Experience: A sluggish or unavailable website can irritate users and drive them away. Watching the header response can assist you in identifying issues that negatively impact the user experience, such as poor response times or broken links.
  • Security: The header response may also include information about your website's security, such as the availability of SSL certificates or the usage of secure protocols such as HTTPS. Watching the header response can assist you in identifying and dealing with possible security threats.

In conclusion, identifying your website's header response is a crucial component of website maintenance since it may assist verify that your website is operating effectively, visible to search engines, offering a pleasant user experience, and is safe.

The following are list of HTTP response codes and their meaning:

  • 1xx Informational: The request was received, and the server is continuing to process the request.
    • 100 Continue: The server has received the request headers and is waiting for the request body.
    • 101 Switching Protocols: The client has requested the server to switch protocols.
  • 2xx Success: The request was successfully received, understood, and accepted by the server.
    • 200 OK: The request has succeeded.
    • 201 Created: The request has been fulfilled, and a new resource has been created.
    • 202 Accepted: The request has been accepted, but the processing has not been completed.
    • 204 No Content: The request has been successfully processed, but there is no content to send back.
  • 3xx Redirection: The client needs to take additional action to complete the request.
    • 300 Multiple Choices: The requested resource has multiple choices, each with its own URI.
    • 301 Moved Permanently: The requested resource has been permanently moved to a new URI.
    • 302 Found: The requested resource has been temporarily moved to a new URI.
    • 303 See Other: The requested resource can be found at a different URI.
    • 304 Not Modified: The requested resource has not been modified since the last time it was requested.
  • 4xx Client Error: The request contains bad syntax or cannot be fulfilled by the server.
    • 400 Bad Request: The request was invalid or could not be understood by the server.
    • 401 Unauthorized: The request requires authentication, but the client did not provide valid credentials.
    • 403 Forbidden: The server understood the request, but the client is not allowed to access the requested resource.
    • 404 Not Found: The requested resource could not be found on the server.
    • 405 Method Not Allowed: The requested method is not allowed for the specified resource.
    • 409 Conflict: The request could not be completed due to a conflict with the current state of the resource.
  • 5xx Server Error: The server failed to fulfill an apparently valid request.
    • 500 Internal Server Error: The server encountered an error while processing the request.
    • 501 Not Implemented: The requested method is not supported by the server and cannot be handled.
    • 502 Bad Gateway: The server received an invalid response from an upstream server while attempting to fulfill the request.
    • 503 Service Unavailable: The server is currently unable to handle the request due to a temporary overload or maintenance of the server.
    • 504 Gateway Timeout: The server did not receive a timely response from an upstream server while attempting to fulfill the request.