Free Tool Kit is a collection of 350 fast, private and free online utilities for developers and everyday use. Format SQL, test regex, decode cron expressions, convert cURL commands, validate JSON Schema, compare text with a diff checker, generate QR codes, convert units, count words and more. No signup, no clutter, and everything runs in your browser so nothing you paste leaves your device. Missing a tool? Use the Suggest a tool button and I'll add it.