Encoding & Security
Data encoding transforms information into formats suitable for transmission, storage, or security. Base64 encodes binary data as ASCII text for embedding in JSON or email. URL encoding ensures special characters pass safely through web requests. Hash functions create fixed-length fingerprints for integrity verification and password storage.
Security-focused tools help generate cryptographically random identifiers, decode authentication tokens for debugging, and evaluate password strength. UUIDs provide collision-resistant unique identifiers for distributed systems. JWT decoding reveals token claims without verification libraries. HMAC generation adds authentication to message signatures.
These tools handle common encoding and security tasks that would otherwise require installing libraries, writing scripts, or searching documentation for the correct algorithm parameters. All processing happens in your browser for sensitive data.
All Encoding & Security Tools
Base64 Encoder
Encode text or binary data to Base64 format and decode Base64 strings back to original content. Essential for embedding images in CSS, transmitting binary data in JSON, and email attachments.
URL Encoder
Encode special characters for safe URL transmission and decode percent-encoded strings. Properly escapes spaces, ampersands, and other characters that have special meaning in URLs.
Hash Generator
Generate cryptographic hashes using MD5, SHA-1, SHA-256, SHA-384, and SHA-512 algorithms. Create checksums for file integrity verification or hash passwords for storage comparisons.
UUID Generator
Generate universally unique identifiers in v1 (timestamp), v4 (random), and other formats. Create single IDs or bulk generate multiple UUIDs for database seeding or testing.
JWT Decoder
Decode JSON Web Tokens to inspect header, payload, and signature components. View claims, expiration times, and issuer information without implementing verification logic.
HTML Entity Encoder
Encode special characters as HTML entities and decode entity references back to characters. Prevents XSS vulnerabilities and ensures proper rendering of special characters in web pages.
HMAC Generator
Generate Hash-based Message Authentication Codes using SHA-256 and other algorithms. Create authenticated message signatures for API requests and webhook verification.
Checksum Calculator
Calculate MD5, SHA-1, and SHA-256 checksums for files to verify download integrity. Compare calculated hashes against published values to ensure files are unmodified.
Password Generator
Generate cryptographically secure random passwords with configurable length and character sets. Include uppercase, lowercase, numbers, and symbols based on security requirements.
Password Strength Checker
Analyze password strength based on length, character variety, patterns, and common password databases. Receive specific recommendations for improving weak passwords.
Which Tool Should You Use?
Transmitting binary data? Use the Base64 Encoder to convert images, files, or binary content into text format safe for JSON, XML, or email transmission.
Building URL query strings? The URL Encoder properly escapes special characters that would otherwise break query parameters or path segments.
Debugging authentication? The JWT Decoder reveals token contents including claims, expiration, and issuer without requiring server-side verification code.
Generating unique identifiers? The UUID Generator creates collision-resistant IDs for database records, session tokens, or distributed system coordination.
Improving security? Generate strong credentials with the Password Generator and verify strength with the Password Strength Checker.