
Of these, by far the most popular is Proxomitron, and it is the one I personally recommend, if you are able to use it for your project. Some local proxy servers can display sent and received headers.
Relies on script, so noscript response cannot be tested. May get different results to a regular GET request. Cannot take form POST data into account. Makes an extra HEAD request instead of showing the headers for the real page:. Can only check the headers for the _top page, not any pages in framesets, or images, stylesheets, script files, etc. This is the most limited of all the approaches.īookmarklet: HEADers (right click and bookmark it).Ĭustom button: HEADers (drag it to a toolbar). Custom button or bookmarkletĪ bookmarklet or custom button can run a script that uses XMLHttpRequest to request the page again, and see what headers are received. Pros/Consĩ.2 version is the same as a custom button, except it also works with pages in framesets. This works in exactly the same way as a custom button. In Opera 9.2, Tools - Advanced - Developer console -> HTTP.
In Opera 10, Tools - Advanced - Developer tools -> Network. The following are some possibilities: Developer console There is no such extension for Opera, but you are not without options. The Live HTTP Headers extension for Firefox can be a useful debugging tool, as it allows Web developers to see the sent and received HTTP headers for any page.