JSON Makr
Professional JSON Toolkit for Developers
Your Complete JSON Toolkit
Format, validate, convert, and transform JSON with professional-grade tools.
Privacy-first by design. No data uploads. All processing happens securely in your browser.
Why Developers Love JSON Makr
Privacy First
All processing happens in your browser
Lightning Fast
Instant results with no server delays
Works Offline
Use it anywhere, anytime
Beautiful UI
Modern, intuitive design
Keyboard Shortcuts
Work faster with shortcuts
Professional Tools
Developer-focused features
All Tools
JSON Formatter
Format and beautify JSON with customizable indentation
JSON Validator
Validate JSON syntax and find errors instantly
JSON Minifier
Compress JSON by removing whitespace
JSON Diff
Compare two JSON objects and see differences
JSON ⇄ TOON Converter
Convert to TOON format - 30-60% fewer tokens for LLMs
JSON to CSV
Convert JSON to CSV format
JSON to YAML
Convert between JSON and YAML formats
JSON to XML
Convert JSON to XML and vice versa
JSON to TypeScript
Generate TypeScript interfaces from JSON
Schema Generator
Generate JSON Schema from sample JSON
Schema Validator
Validate JSON against a JSON Schema
JSON Path Finder
Find and test JSON paths easily
JSON Query
Query JSON with JSONPath and JMESPath
JSON Merge
Merge multiple JSON objects intelligently
JSON Repair
Auto-fix common JSON errors
JSON Escape
Escape and unescape JSON strings
Mock Generator
Generate realistic mock JSON data
Graph Visualizer
Visualize JSON as interactive graphs
JSON Playground
Learn JSON with interactive examples