Developer tools that don't suck.
Format, validate & minify JSON
Beautify SQL queries
Format & validate XML documents
Encode & decode Base64
Encode & decode URL components
Encode & decode HTML entities
Decode & inspect JWT tokens
Convert unix timestamps to dates
Convert YAML to JSON and back
Convert between number bases
Convert CSV data to JSON
Generate UUIDs v4
MD5, SHA-1, SHA-256, SHA-512
Generate strong random passwords
Generate placeholder text
CIDR subnet calculations
Look up IP address info
Compare text side by side
Test & debug regular expressions
Build & explain cron expressions