> drwho.me
network + dev tools. minimal and fast.
no signup. no tracking beyond ads.
network
- user agentnetwork
parse your browser's user agent string (browser, os, device, engine).
- what is my ipnetwork
your public ip address, location, and timezone.
- http headersnetwork
inspect the http request headers your browser sends.
- ip lookupnetwork
look up any IP's geolocation, ASN, and ISP (via ipinfo.io).
- dns lookupnetwork
resolve A, AAAA, MX, TXT, NS, or CNAME records via Cloudflare DoH.
dev utilities
- base64dev
encode and decode base64 strings (client-side, unicode-safe).
- jsondev
format and validate JSON. 2 / 4 space or minified output.
- url codecdev
percent-encode and decode URL components.
- uuiddev
generate UUIDs (v4 random, v7 time-ordered).
- jwt decoderdev
decode JWT header and payload client-side. no signature verification.