Security & Password Tools
Free online security tools to generate strong passwords, verify password strength, create cryptographic hashes, generate UUIDs, and produce random strings. All processing happens in your browser.
Online Security Utilities
Security tools help protect your accounts, applications, and data. Our free collection includes a password generator for creating strong credentials, a strength checker to audit existing passwords, a hash generator for data integrity verification, and UUID tools for unique identifier creation. Every tool runs entirely in your browser — no data is ever sent to our servers.
Who uses security tools? Developers generate UUIDs for database keys and API tokens, security teams audit password policies, sysadmins create hashes for file integrity checking, and individuals generate strong passwords for new accounts. Building secure habits starts with the right tools.
Common Mistakes to Avoid
Using short or simple passwords
Passwords under 12 characters are vulnerable to brute-force attacks. Always use at least 16 characters with a mix of uppercase, lowercase, numbers, and symbols for critical accounts.
Reusing passwords across sites
If one site is breached, all accounts sharing that password are at risk. Use a unique password for each account and store them in a reputable password manager.
Using MD5 for security-critical hashing
MD5 is broken for cryptographic security. Use SHA256 or SHA512 for password hashing in applications. For password storage specifically, use bcrypt or Argon2.
Not using UUIDs for primary keys
Sequential integer IDs expose record counts and make scraping easy. UUIDs prevent enumeration attacks and are safer for public-facing APIs.
Tips for Better Security
Use a password manager: Generate a unique strong password for every account and let your password manager store them. You only need to remember one master password.
Check your passwords regularly: Run existing passwords through the strength checker periodically. Upgrade any that score below "Strong".
Always enable 2FA: Even the strongest password is better protected with two-factor authentication. Enable it on every account that supports it.
Use SHA256 for file verification: When downloading software or files, compare the provided SHA256 hash with one you generate from the downloaded file to confirm authenticity.