Free Developer Tools - DevTools

Free online developer tools for web development. Includes JSON formatter, validator, generator, and beautifier. Format, minify, validate, and generate JSON code instantly without registration.

📋 JSON Tools

✨ JSON Formatter

Format, validate, minify, and beautify JSON online. Pretty-print JSON code with syntax highlighting.

🔎 JSON Path Tester

Query and extract data from JSON using JSONPath expressions. Test paths and navigate JSON structures easily.

📄 XML Tools

📝 XML Formatter

Format, validate, minify, and beautify XML online. Pretty-print XML code with syntax highlighting.

🗂️ XPath Tester

Query and extract data from XML using XPath expressions. Test XPath queries and navigate XML documents easily.

🔄 Converters & Generators

🎲 JSON Generator

Generate realistic sample JSON data for testing and development. Create test data with templates.

↔️ JSON to XML Converter

Convert JSON to XML format instantly. Transform your JSON data into properly formatted XML with one click.

🔷 JSON to TypeScript

Convert JSON to TypeScript interfaces instantly. Generate type-safe TypeScript code from JSON data.

🧪 Testing & Query Tools

🔍 Regex Tester

Test and debug regular expressions online. Find matches, capture groups, and validate patterns in real-time.

💾 SQL Formatter

Format and beautify SQL queries online. Organize SQL code with proper indentation and syntax highlighting.

🔐 JWT Decoder

Decode and verify JSON Web Tokens (JWT) online. Inspect header, payload, and signature with support for multiple algorithms.

⏰ Cron Generator

Generate and validate cron expressions with human-readable descriptions. Create scheduled tasks with common presets and preview next run times.

🕐 Epoch Converter

Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds with GMT, local time, and ISO 8601 formats.