Developer & Data Utilities
Fast formatting, parsing, encoding, cryptography, and code utilities designed for modern software engineers and web developers.
JSON Formatter, Validator & Minifier
Format messy JSON with 2-space indentation, validate syntax, and compress into 1 line.
JWT Token Decoder & Claims Inspector
Decode header algorithms, payload claims, expiration timestamps, and issuer details.
Cryptographic Hash Generator
Generate secure cryptographic message digests and HMAC signatures instantly.
Base64 Encoder & Decoder
Encode and decode standard and URL-safe Base64 strings and image data URIs.
UUID / GUID Generator (v4)
Generate batches of RFC 4122 v4 Universally Unique Identifiers with custom formatting.
Unix Timestamp & Epoch Converter
Convert epoch seconds and milliseconds to human-readable UTC and local date formats.
URL Encoder & Decoder
Safely encode and decode query parameters, special characters, and percent codes.
User-Agent String Parser
Parse browser family, rendering engine, OS version, device brand, and bot signatures.
CSV to JSON & JSON to CSV Converter
Convert tabular spreadsheet data to JSON arrays and structured JSON to clean CSV files.
Regular Expression (RegEx) Tester
Test patterns, flags (g, i, m, s), capture groups, and match highlighting.
Secure Password & Passphrase Generator
Generate cryptographically secure random passwords with entropy calculations.
QR Code Generator & Styler
Generate clean, scannable QR codes for URLs, WiFi credentials, and text payloads.
Magic Byte & File Type Identifier
Detect real file types, spoofed extensions, and MIME types from binary headers.
Multi-Hash File Checksum Verifier
Verify file integrity, detect tampering, and calculate cryptographic checksums.