Security Tools
Encrypt text, hash files, check SSL certificates, and lookup DNS records. All tools run locally in your browser.
DNS Lookup - Query DNS Records Online
Free DNS lookup tool. Query A, AAAA, MX, NS, and TXT records for any domain using Google Public DNS. Fast and accurate results.
File Hash Calculator - SHA-256 & SHA-1 Checksums
Free file hash calculator. Drag and drop files to compute SHA-256 and SHA-1 checksums. Verify file integrity entirely in your browser.
HTTP Header Inspector - Check Response Headers
Free HTTP header inspector. Check any URL's response headers including security headers, caching, and content type.
SSL Certificate Checker - Verify HTTPS Status
Free SSL certificate checker. Verify if a domain has valid HTTPS and check connection security. Quick SSL validation tool.
Text Encryptor - AES-256 Encryption & Decryption
Free client-side text encryption. Encrypt and decrypt text with AES-256-GCM using the Web Crypto API. Your data never leaves your browser.