🔐 Free Online Security Tools
Free online security tools for encryption, hashing, and password management. SHA, bcrypt, AES encryption, and more. All client-side processing.
18 free toolsHow to Use These Tools
- Choose a tool from the list above that matches your needs.
- Click "Use Now" to open the tool in a new page.
- Follow the tool-specific instructions to process your data.
- Copy or download the results — all processing happens in your browser!
AES Encrypt & Decrypt
Free online AES encrypt & decrypt tool using Web Crypto API with AES-256-CBC ...
Use Now →BCrypt Hash Generator
Free online BCrypt hash generator using bcryptjs library. Hash passwords with...
Use Now →Caesar Cipher Encrypt & Decrypt
Free online Caesar Cipher encryption and decryption tool. Shift letters to en...
Use Now →Checksum Verifier
Verify file checksums online. Support MD5/SHA1/SHA256/SHA512 hash comparison.
Use Now →MD5 Hash Generator
Free online MD5 hash generator. Generate 32-character MD5 hashes from text input. Supports lowercase/uppercase output, real-time calculation, hash com
Use Now →Passphrase Generator · PassphraseGenerate
Free online passphrase generator. Create memorable XKCD-style word-based passphrases. More secure than traditional passwords.
Use Now →Password Entropy Calculator - Password Strength Analyzer with Entropy Bits Online
Free online password entropy calculator. Scientifically evaluate password strength using Shannon information entropy formula. Calculate entropy in bit
Use Now →Password Generator
Generate strong random passwords. Customize character types, length, and batch generate.
Use Now →Password Pwned Checker
Free online password breach checker that uses HaveIBeenPwned's k-anonymity AP...
Use Now →Password Strength Meter
Free online password strength meter. Real-time password security analysis: character types, crack time estimation. Common password detection, improvem
Use Now →SHA-1 Generator
Generate SHA-1 hash online. 160-bit hash for text encryption and data verification.
Use Now →SHA-256 Generator
Free online SHA-256 hash generator. Generate SHA-256 hashes from text input. Supports lowercase/uppercase output, real-time calculation, one-click cop
Use Now →SHA-512 Generator
Generate SHA-512 hash online. High-strength encryption for data integrity verification.
Use Now →TOTP Authenticator Generator - Time-Based One-Time Password Generator Online
Free online TOTP (Time-based One-Time Password) generator based on RFC 6238. Generate time-synchronized one-time passwords with custom secret keys. Su
Use Now →TOTP Code Generator
Free online TOTP code generator. Generate time-based one-time passwords. Customizable key, algorithm, and code length. Client-side only. Compatible wi
Use Now →Vigenere Cipher Encrypt & Decrypt
Free online Vigenere Cipher encryption and decryption tool. A polyalphabetic ...
Use Now →🔐 Password Strength Tester
Free online password strength tester. Real-time security analysis with entrop...
Use Now →Frequently Asked Questions
Are these security tools safe to use?
Yes. All cryptographic operations use the browser's built-in Web Crypto API, which implements industry-standard algorithms. Your data never leaves your browser.
Can I use these for real encryption?
The encryption tools use standard algorithms (AES-256, SHA-256, bcrypt, etc.) suitable for real-world use. However, for highly sensitive data, we recommend using dedicated security software.
What hashing algorithms are supported?
We support MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA-3, bcrypt, Argon2, and more. All using the Web Crypto API for cryptographic-grade output.