// dev-tools
Developer Tools
A small toolbox of things I reach for daily. All client-side unless noted.
server
SMTP Tester
Send a real test email through any SMTP server. Server-side.
./smtp →
JWT Decoder
Decode and inspect JSON Web Tokens. No signature verification.
./jwt →
Base64
Encode or decode Base64 strings, bidirectional.
./base64 →
JSON Formatter
Pretty-print, minify, and validate JSON.
./json →
Regex Tester
Test patterns with live highlighting, flags, and capture groups.
./regex →
Color Converter
HEX ↔ RGB ↔ HSL with live swatch and WCAG contrast scoring.
./color →
UUID Generator
Generate v4 UUIDs in bulk.
./uuid →
Hash Generator
SHA-1 / SHA-256 / SHA-512 via Web Crypto.
./hash →
Timestamp Converter
Unix ↔ ISO 8601 in both directions.
./timestamp →