A collection of handy utilities for the everyday developer.
Domain registration info
Geolocation & VPN detection
Query DNS records
Full domain analysis
Discover subdomains via CT logs
Historical IPs for a domain
Inspect response headers
MD5, SHA-256, SHA-512, bcrypt
Encode & decode Base64
Encode & decode URLs
Encode & decode HTML
Decode JSON Web Tokens
Generate random numbers
Generate random strings
Generate v4 UUIDs
Secure password generator
Generate placeholder text
GB, MB, GiB converter
Timestamp & date converter
HEX, RGB, HSL converter
Binary, octal, hex converter
Format & validate JSON
Test regular expressions
Parse user agent strings