Free Online Security Tools
Client-side tools never send your data anywhere — check your browser's network tab if you don't believe us. Lookup tools are proxied through our backend so no API keys are ever exposed to you or anyone watching the wire. Each tool below — from password and hash generators to WHOIS, CVE and breach lookups — has its own dedicated page. No signup required.
Password Generator
Generate strong, cryptographically random passwords and check their strength.
Instant Password GeneratorHash Generator
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes instantly, fully client-side.
Real-Time HashingBase64 / URL Codec
Encode or decode text as Base64 or URL-safe strings, in either direction.
Conversion ToolJWT Decoder
Decode and inspect JSON Web Tokens — header, payload and signature.
jwt token decode onlineCIDR Calculator
Get network range, broadcast address and host counts from CIDR notation.
Subnet/IP Address CalculatorWHOIS Lookup
Domain registration data via the modern RDAP protocol.
Domain CheckerCVE Lookup
Search the NVD database by keyword or CVE ID for severity and details.
Common Vulnerabilities and Exposures checker OnlineBreach Checker
Check whether an email appears in known public breach datasets.
email breach checker