Web and Network Tools in One Page: URL and UTM, Subnets, HTTP Codes and Browser Info

This set works only on what you type. It does not look up IPs or domains through outside services, which keeps it fast and private.

The tabs

• URL: parse, remove tracking, build UTM, encode.
• Subnet: CIDR for IPv4 and IPv6.
• HTTP status codes: a searchable table.
• Browser info: what sites can read and a User-Agent parser.

What it does not do

There is no WHOIS, DNS or speed test, because those need a server. These tools run entirely in your browser.

Direct links

Each tool also has its own page, handy when you want to send a colleague straight to one of them, for example the subnet calculator or the HTTP status table.