Simple, fun, and useful web utilities for developers and enthusiasts. Explore what your browser sends and how servers respond!
user@linuxtools:~$ ls -1 /tools
/ip (Show Your IP)
/headers (View Request Headers)
/return?code=XXX (Test HTTP Codes)
/diff (Text Comparison Tool)
/totp (TOTP Code Generator)
user@linuxtools:~$ _
Quickly find out your public IP address (IPv4 or IPv6) as seen by this server.
See all the HTTP headers your browser is sending with it's request to this page. Useful for debugging!
Request a specific HTTP status code (e.g., 404, 200, 503) and see how your browser or tools react to the response.
Paste two blocks of text and instantly see the differences highlighted — additions, deletions, and unchanged lines.
Generate Time-based One-Time Passwords from any Base32 secret key — entirely in your browser, nothing sent to the server.