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35+ free online tools for developers, designers, and data professionals. No signup required, no data stored.
Format, validate, and prettify JSON with syntax highlighting
Convert JSON arrays to CSV and vice versa
Auto-generate JSON Schema from sample JSON data
Compare two JSON documents and highlight differences
Convert between YAML and JSON formats instantly
Format, validate, and minify XML documents
Format and beautify SQL queries with syntax highlighting
Convert between length, weight, temperature, and data units
Real-time currency conversion for 150+ currencies
Generate customizable QR codes for URLs, text, and more
Convert between Unix timestamps and human-readable dates
Generate RFC 4122 compliant UUIDs (v1, v4, v5)
Parse and explain cron expressions in plain English
Convert between binary, octal, decimal, and hexadecimal
Test and debug regular expressions with live matching
Generate placeholder text for designs and mockups
Count words, characters, sentences, and paragraphs
Convert between camelCase, snake_case, kebab-case, and more
Live markdown preview with GitHub Flavored Markdown