Deconstruct browser User-Agent strings completely client-side and inspect client hardware, viewport sizing, and pixel ratio metrics
IP Subnet Calculator
Calculate CIDR subnets, mask values & usable hosts
IPv6 Address Helper
Expand, compress, validate & parse IPv6 addresses
DNS Record Decoder
Parse DNS queries and responses from HEX streams
HTTP Status Code Glossary
Searchable reference for all HTTP status codes
URL & Query Parameter Inspector
Inspect, dissect, edit, encode, and rebuild URLs & query strings