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A collection of practical utilities for website owners and developers. Extract links, scan open ports, and generate files such as robots.txt or Content Security Policy headers when you need a fast starting point.
Tool cluster
Test how strong your password is — 100% client-side, private
Generate perfect meta tags for SEO and social sharing
Generate MD5, SHA-1, SHA-256, SHA-512 hashes instantly
Encode or decode Base64 text instantly
Encode or decode URL-encoded strings
Format, validate, and beautify JSON data
Generate a robots.txt file for your website
Build Content-Security-Policy headers visually