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JSON, regex, cron, UUID, hash and encoding tools.
Developer3 tools
Free Online JSON Converter - Multi-Format Conversion
Convert JSON data to YAML, XML, Java classes, Python dataclasses, TypeScript interfaces, and Go structs. Free online multi-format JSON converter.
Free Online JSON Formatter
Format, beautify, validate and minify JSON online. Free tool with customizable indentation, key sorting, line numbers and character statistics.
Free Online QR Code Generator
Use our free QR Code Generator to create QR codes instantly from text, URLs, and more. Download QR codes as PNG images. Updated for 2026.