Security
51 free browser-based security tools.
Hash Generator
Generate hashes from text.
Bcrypt Generator
Create bcrypt password hashes.
UUID Generator
Generate UUIDs and ULIDs.
Password Strength Checker
Measure password strength.
JWT Decoder
Inspect JWT payloads.
JWT Generator
Sign and create JWTs.
JWT Expiry Checker
Check JWT expiration.
JWT Visualizer
Visualize JWT structure.
JWT RS256 Verifier
Verify RS256-signed JWTs.
Token Strength Analyzer
Analyze token entropy.
Random Password Generator
Generate secure passwords.
Random API Key Generator
Generate random API keys.
SHA-512 Generator
Compute SHA-512 hashes.
SHA-256 Generator
Compute SHA-256 hashes.
SHA-1 Generator
Compute SHA-1 hashes.
MD5 Generator
Compute MD5 hashes.
HMAC Generator
Generate HMAC signatures.
CRC32 Calculator
Compute CRC32 checksums.
Htpasswd Generator
Generate htpasswd entries.
Basic Auth Generator
Build Basic Auth headers.
PKCE Generator
Generate PKCE challenges.
OAuth URL Generator
Build OAuth authorization URLs.
Session Token Decoder
Decode session tokens.
File Hash Checker
Verify file hashes.
API Key Formatter
Format API key strings.
QR Code Generator
Generate QR codes from text.
QR Code Decoder
Decode QR codes from images.
Barcode Generator
Generate 1D/2D barcodes.
Barcode Decoder
Decode barcode images.
Passphrase Generator
Diceware-style memorable passphrases.
Password Entropy Calculator
Compute Shannon entropy in bits.
Password Pattern Analyzer
Detect common patterns and weaknesses.
Common Password Checker
Check against a list of common passwords.
Password Length Estimator
Estimate crack time by length.
PIN Generator
Random PIN codes of any length.
Memorable Password Generator
Word + symbol blended passwords.
Password Comparison Tool
Compare two passwords side by side.
AES Encryption/Decryption Tool
AES-GCM encrypt/decrypt in browser.
RSA Key Generator
Generate RSA keypair in browser.
Elliptic Curve Key Generator
Generate ECDSA keypair in browser.
Caesar Cipher Tool
Classic shift cipher.
Vigenère Cipher Tool
Polyalphabetic key cipher.
XOR Cipher Tool
XOR-based stream cipher.
Rail Fence Cipher Tool
Zig-zag transposition cipher.
Zero-Width Character Inserter
Hide messages in zero-width chars.
JWT Validator
Validate JWT structure & claims.
Hash Comparison Tool
Constant-time hash compare.
CSP Validator
Validate CSP in browser.
Subresource Integrity Generator
Build SRI hashes for scripts.
API Key Format Detector
Detect common API key formats.
JWT HS256 Verifier
Verify HS256-signed JWTs.