You can use this form to check the HTTP headers for a web page. Enter the URL in the box and press "Submit".
Optionally you can send an "If-Modified-Since" header. If you want to do this you can press "Now" to fill in the current time or enter your own time. Otherwise leave it blank.
The "If-None-Match" header can contain a comma-separated list of ETags.
Please contact me with queries, problems and bugs.