Free Utility Tools — JSON, Regex, CSV & Encoders

Utility tools

QR Code Generator — Create QR codes from text or links and download as PNG.
Unit Converter — Convert length, weight, and temperature — everyday units only.
UUID Generator — Generate UUID v4 identifiers locally — single or bulk copy.
Hash Generator — SHA-256, SHA-384, and SHA-512 hashes of text via Web Crypto.
Color Converter — Convert between hex, RGB, and HSL color formats.
JSON Formatter — Pretty-print or minify JSON with clear syntax error messages.
JWT Decoder — Decode JWT header and payload locally — inspect tokens without verification.
Text Manipulator — Find and replace text or test regex patterns with live match highlights.
CSV JSON Converter — Convert CSV to JSON or JSON arrays back to CSV rows.
XML Formatter — Pretty-print XML with indentation — parse errors shown clearly.
Encoder Toolkit — Encode or decode Base64 and HTML entities in one place.