How to View Response Headers
A form of information transfer over the Internet, hypertext transfer protocol (HTTP) determines the format, method and rules in which Web browsers receive information from servers that host individual websites and Web pages. When Web browsers ask for a document or Web page to be retrieved, the server sends back a response. This HTTP response is also known as a "response header" and contains information about the Web page requested, such as "cookie" information, the date the document or Web page was last modified and the size (in bytes) of the Web page.
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Instructions
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Open your Internet browser. Go to the official homepage of the browser in which you want to view response headers. Click on the "add-ons" or "extensions" link to view a listing of both official and user-created tools that allow you to extend your browser's functionality.
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Select the "web developer" or "development" section of the browser's add-ons or extensions. Read the descriptions of the different add-ons available and click on one that gives you the ability to view HTTP response headers. Examples of add-ons and extensions for different Web browsers include "Microsoft Fiddler" for Internet Explorer, "HttpFox" for Mozilla Firefox, and "HTTP Response Browser" and "Web Developer" for both Google Chrome and FireFox.
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Click the "install" button next to the add-on or extension you've chosen. Wait for the installation to complete. Restart your Web browser, if necessary, for changes to take effect.
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View the toolbar add-on or extension installed on your browser. Find and click the "information" section of the toolbar that allows you to view information about the Web pages you visit. Click on "view response headers" in this section to view the HTTP response headers.
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