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Security Tools — Free Online Tools

10 free security tools — encrypt, generate keys and validate securely. No signup, no payment, no watermark.

All Security Tools (10)

• Passphrase Generator
  Create strong, memorable word-based passphrases with adjustable options.
• Password Leak Checker
  Check a password against common breaches, fully offline and private.
• Email Validator
  Validate email format, detect typos and disposable domains instantly.
• Username Generator
  Generate creative, professional or random usernames in one click.
• Username Availability Checker
  Build profile links to check a username across major platforms.
• Random Token Generator
  Generate secure hex, alphanumeric, Base64 or UUID tokens in bulk.
• API Key Generator
  Generate cryptographically secure API keys with custom prefixes.
• CSR Generator
  Generate an RSA key pair and Certificate Signing Request in-browser.
• SSL Certificate Decoder
  Decode a PEM certificate to view issuer, subject, validity and more.
• Hex Encoder & Decoder
  Convert text to hexadecimal and back with file upload support.

Explore other categories

• QR Code Tools
  Generate customizable QR codes
• PDF Tools
  Convert and combine documents
• Image Tools
  Compress, resize and convert
• Text Tools
  Analyze and transform text
• SEO Tools
  Generate meta, schema and sitemaps
• Developer Tools
  Format, encode, hash and generate
• Calculators
  Calculate and convert units
• Converters
  Convert temperature and colors
• Password Tools
  Generate, hash and validate passwords
• Website Tools
  DNS, IP and WHOIS lookups
• File Tools
  Inspect, encrypt and secure files
• Video Tools
  Inspect video and extract frames
• Audio Tools
  Speech, voice and audio metadata