Free security tools online
20 free security tools — instant, private, no sign-up
AES Encrypt Decrypt
Encrypt and decrypt text with AES-GCM in your browser.
Open tool →Bcrypt Hash Generator & Verifier
Generate and verify cryptographically secure Bcrypt password hashes ($2a$, $2b$, $2y$) with configurable cost factor rounds and salt.
Open tool →Cryptographic Hash Identifier
Identify unknown hash types (MD5, SHA-256, Bcrypt, Argon2, NTLM) and analyze cryptographic bit length and security.
Open tool →CSR Certificate Request Decoder
Decode PKCS#10 Certificate Signing Requests (CSR) to verify Common Name, SANs, organization, key size, and signature algorithm.
Open tool →DMARC & SPF Record Generator
Generate and validate DMARC and SPF DNS TXT records to protect your domain from email spoofing, phishing, and ensure delivery to Gmail and Yahoo.
Open tool →File Hash Generator (SHA-256, MD5)
Free online tool — no sign-up required.
Open tool →Hash Generator
Compute SHA-256, SHA-1, and other hashes from any text input.
Open tool →HMAC Generator
Compute HMAC-SHA256 signatures locally.
Open tool →HTML Sanitizer & XSS Cleaner
Sanitize unsafe HTML markup, eliminate XSS vulnerabilities, remove dangerous script tags and event handlers with real-time preview.
Open tool →HTTP Security Headers Auditor
Inspect and audit website HTTP response security headers: HSTS, Content-Security-Policy (CSP), X-Frame-Options, and Referrer-Policy.
Open tool →MS Access Password Recovery & DB Tools
Free online tool — no sign-up required.
Open tool →Password Entropy & Crack Time Calculator
Calculate information entropy (in bits) according to Shannon formula and estimate brute-force crack time.
Open tool →Password Generator
Create strong random passwords with custom length and character sets.
Open tool →Password Strength Checker
Check password strength locally — nothing is uploaded.
Open tool →Random String PIN Generator
Generate random strings, passwords, and PINs locally.
Open tool →ROT13 & Caesar Cipher Encoder/Decoder
Encode and decode text using the ROT13 substitution cipher and Caesar shift cipher with configurable rotation shift from 1 to 25.
Open tool →RSA Key Pair Generator (2048/4096-bit)
Generate secure 2048-bit and 4096-bit RSA public and private key pairs in standard PKCS#8 and SPKI PEM formats directly in your browser.
Open tool →SSL Certificate Checker & Expiry Inspector
Inspect SSL/TLS certificate health, days until expiration, certificate authority (CA) issuer, and HTTPS handshake parameters.
Open tool →Text & Message Encryptor
Encrypt and decrypt sensitive text, notes, passwords, and secret messages using client-side AES-256-GCM encryption.
Open tool →TOTP 2FA Generator
Generate TOTP 2FA codes from a Base32 secret in your browser.
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