Palindrome Checker
test if text reads the same forwards and backwards
Text Direction Checker
detect rtl & ltr characters in any string
Leap Year Checker
Determine leap years and find next / previous instantly
Port Conflict Checker
Check port conflicts in configs
Security Header Checker
Check common security headers
CIDR Overlap Checker
Check overlapping CIDR blocks
Meta Description Length Checker
Check meta description length
Title Tag Length Checker
Check title tag length
Slug SEO Checker
Check slugs for SEO friendliness
SEO Copy Length Checker
Check heading and copy lengths
npm Package Size Checker
Check npm package bundle size online
Password Strength Checker
Check password strength in one click
Contrast Checker
Check contrast in one click
Keyword Density Checker
Check keyword density in one click