Website HTTP Headers Checker

0 of 0 ratings

HTTP headers are part of the Hypertext Transfer Protocol, created in the 1990s to transfer data to and from browsers. HTTP headers are a key component of a website as they are the primary way for the server to communicate with the browser through requests and responses.

Typically, HTTP headers contain information such as host, method, user agent, Accept, Cookie, cache control, and more, each serving a specific function. This HTTP headers checker tool will display the response from the website you wish to analyze.

There are SEO benefits hidden within these headers, not just in the URL after the "www" but also before it. Use our HTTP headers checker to further optimize your SEO by reviewing the server response and status codes of your URLs, as these codes provide invaluable information about your site’s performance.

Common Reasons to Use Our HTTP Headers Checker

200! 300! 400! 500! Once, twice…

It might sound like an auction, but these numbers represent crucial information about your site and what is happening on it. There are dozens of codes between these ranges, most of which are hidden from the end user unless there’s a notorious error like 404, which we have all seen, and it lives in the communication between the browser (or client) and the server.

The HTTP headers checker makes this exchange visible. To understand why you might need one of these codes, you first need to understand a bit more about headers. Simply put, when someone tries to access any page on your site, multiple HTTP requests are sent to the server, and the server responds, including the content. This happens in a fraction of a second with an HTTP header that contains information you can use to improve your site’s performance and SEO.

The output from our HTTP response checker, which search engine crawlers see, includes details like server software, content type, content length, etag, location, language, and more. Working with these often-overlooked parts of your site and instructing servers on how to cache your data is important.

So, what is the main reason to use our HTTP headers checker?

Improving technical SEO
Enhancing search engine indexing by eliminating errors
Ensuring you have declared canonical pages
Increasing website performance

Status Codes Commonly Returned by Our HTTP Headers Checker

Although our HTTP status checker can return many different response codes, you will most likely see only a few.

200: OK

One of the best codes to see, indicating the request was successful.

301: Moved Permanently

This status indicates that the requested page has been permanently redirected to a new URL.

302: Found (Temporary Redirect)

This status indicates that the redirect is temporary.

403: Forbidden

HTTP 400-level codes indicate client-side issues. A 403 indicates that the server understood the request but refused to authorize it, usually due to permission issues.

404: Not Found

The most well-known error code, 404 means that the page was not found on the server.

500: Internal Server Error

All 500-level codes relate to server-side issues. A 500 indicates a general server error, but unfortunately does not specify the exact problem.

503: Service Unavailable

A 503 error means the server is not available to process your request, typically due to maintenance, and is usually resolved quickly.

HTTP Status Code Keys for Our HTTP Headers Checker

While we have mentioned the most common error codes, there are many more possible ones. Here is a comprehensive list of all possible codes that our HTTP checker may return:

100's – Informational Responses

100: Continue
101: Switching Protocols
102: Processing
103: Early Hints

200's – Successful Responses

200: OK
201: Created
202: Accepted
203: Non-Authoritative Information
204: No Content
205: Reset Content
206: Partial Content
207: Multi-Status
208: Already Reported
226: IM Used

300's – Redirection Responses

300: Multiple Choices
301: Moved Permanently
302: Found
303: See Other
304: Not Modified
305: Use Proxy
307: Temporary Redirect
308: Permanent Redirect

400's – Client Error Responses

400: Bad Request
401: Unauthorized
402: Payment Required
403: Forbidden
404: Not Found
405: Method Not Allowed
406: Not Acceptable
407: Proxy Authentication Required
408: Request Timeout
409: Conflict
410: Gone
411: Length Required
412: Precondition Failed
413: Payload Too Large
414: URI Too Long

500's – Server Error Responses

500: Internal Server Error
501: Not Implemented
502: Bad Gateway
503: Service Unavailable
504: Gateway Timeout
505: HTTP Version Not Supported
506: Variant Also Negotiates
507: Insufficient Storage
508: Loop Detected
509: Bandwidth Limit Exceeded
510: Not Extended
511: Network Authentication Required