Is this HTTP headers checker free?

Yes, and no account or signup is required.

Are Cookie or Authorization headers shown?

No, those are redacted on display since they can contain sensitive session data.

See the exact HTTP request headers your browser sends — user agent, accept-language, and more — no signup required.

accept	/
accept-encoding	gzip,br
cdn-loop	cloudflare; loops=1
cf-connecting-ip	216.73.217.52
cf-ipcountry	US
cf-ray	a36e99339a2d3a24-CMH
cf-visitor	{"scheme":"https"}
connection	keep-alive
host	www.toolzipp.com
user-agent	Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
x-forwarded-for	216.73.217.52, 216.73.217.52,216.73.217.52
x-forwarded-host	www.toolzipp.com
x-forwarded-port	3000
x-forwarded-proto	https

This page automatically reads and displays the HTTP headers your browser sent with this request.

Instantly find your public IP address, browser, and operating system — no signup required.

Calculate network address, broadcast address, subnet mask, and usable host range from an IP address and CIDR prefix — free, right in your browser.