HTTP response headers tool returns all the HTTP headers we get in response of opening a web page in a browser. Checking Online HTTP server headers helps us to debug any changes we made recently to our website or to verify if the response headers we have set are correctly passing to the user's browsers.
The response headers can change with each different URL and its the webmaster's will to decide what HTTP headers to send in response and what headers to send for what page. Primarily, HTTP Server Headers can change with types of requests we send to the server. The commonly used request types are
DELETE. Moreover, this tool also offers you to select which request type you want to use before asking the web page for a response.
You can also provide the HTTP authentication credentials for those pages which does not allow public access without authenticating them with username and password.
It also gives an option to modify a few request headers, for example, you can modify what user agent you want to send with your request because some websites modify the response headers based on what user agent is requesting the web page.