Cryptography & Web Security Hardening
Generate RSA keys, TOTP 2FA codes, CSP headers, SRI hashes, HMAC signatures, and verify password hashes
Tools in This Collection
TOTP 2FA Generator
Generate TOTP 2FA codes and QR codes for authenticator apps. Supports otpauth:// URIs, multiple accounts, and backup export. 100% client-side.
Text Encryptor
Encrypt and decrypt text with various algorithms
.htaccess Generator
Generate Apache .htaccess configuration files with an intuitive visual interface. Create SSL redirects, URL rewriting rules, security headers, and performance optimizations without writing complex syntax.
Free CSP Generator Online | Create Content Security Policy Headers
Generate free Content Security Policy headers online. Protect your website from XSS attacks, clickjacking, and other code injection attacks with our CSP generator tool. No signup required.
SRI Hash Generator
Generate Subresource Integrity hashes
RSA Key Pair Generator
Generate RSA 2048/3072/4096-bit public and private key pairs in-browser via the Web Crypto API. Export as PEM or Base64.
JWK to PEM Converter
Convert JSON Web Keys (JWK) to PEM format and back using the Web Crypto API. Supports RSA, EC (P-256, P-384, P-521), and Ed25519 keys. 100% client-side.
Password Hash Verifier
Verify passwords against bcrypt hashes
Data Sanitizer
Clean and sanitize data to prevent XSS attacks and SQL injection
HMAC Generator
Generate HMAC for message authentication
.htpasswd Generator
Generate .htpasswd files for Apache authentication
Why This Collection
We curated this collection by combining the best tools for development to match your needs.
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Last updated: October 29, 2026