Test a regular expression with live match highlighting as you type. Faster than debugging a pattern inside your code.
Convert an IP address between decimal, binary and hexadecimal notation. Useful when reading logs and configuring networks.
Create a QR code for a link, text or contact card, and read a code back out of an uploaded image. Everything runs in the browser.
Generate and read QR codes, test regular expressions with live match highlighting, and convert IP addresses between notations.
This section gathers the utilities most often needed when working on a site or a network. The QR tools build a code for a link or text and read a code back out of an image. The regex tester highlights matches as you type, which is noticeably faster than checking a pattern inside code. The IP converter moves an address between decimal, binary and hexadecimal notation. Everything opens without registration and runs in the browser.