Developer Tools
Fast, no-nonsense utilities for encoding, formatting and inspecting data.
Punycode Converter
Convert IDN domains to/from xn-- Punycode
Base64 / Hash Tools
Encode, decode & hash text
JSON Utilities
Format, validate & minify JSON
SSL Checker
Inspect TLS/SSL certificates
Password Generator
Generate strong random passwords
QR Code Generator
Create custom QR codes with live preview & colors
URL Shortener
Shorten long URLs with instant QR preview & copy
Chmod Calculator
Calculate file & directory permissions in octal & symbolic
Text Diff Checker
Compare text changes side-by-side with diff highlighting
LLMs.txt Generator
Generate standardized llms.txt files for AI search engines and LLM crawlers