Security Tools
Diagnose domains, servers and network configuration — DNS, SSL, WHOIS, IP lookup, password strength and more, all free with no sign-up required.
Password Generator
Generate strong, random passwords.
UUID Generator
Generate random UUID v4 identifiers.
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes.
QR Code Generator
Turn any text, URL or contact info into a scannable QR code.
QR Code Scanner
Upload a QR code image and instantly decode its contents.
Barcode Generator
Generate CODE128, EAN-13 and other common barcode formats.
URL Shortener
Turn a long link into a short, shareable URL.
IP Lookup
Find the location, ISP and network details behind any IP address.
DNS Lookup
Query A, AAAA, MX, TXT, NS and CNAME records for any domain.
HTTP Header Checker
Inspect the response status, redirect chain and headers for any URL.
SSL Checker
Check an SSL certificate's validity, issuer and expiry date.
WHOIS Lookup
Look up domain registration details: registrar, dates and nameservers.
Domain Age Checker
Find out exactly how old a domain is, based on its registration date.
Port Checker
Check whether a specific TCP port is open on a host.
User Agent Parser
Break down any User-Agent string into browser, OS and device details.
DNS Propagation Checker
Check a DNS record across multiple global resolvers to see if it has propagated.
Password Strength Checker
Check how strong a password is and get tips to make it stronger.
URL Scanner
Inspect a URL for redirects, HTTPS and other technical safety signals.
Email Header Analyzer
Trace an email's delivery path and check its SPF/DKIM/DMARC results.