Free Online JSON Editor with Advanced Features
Professional JSON editor with tree, code, and table views. Real-time validation, JSONPath queries, and format conversion. 100% client-side, no signup required.
Key Features of Our JSON Editor
Tree View - Hierarchical JSON Visualization
Explore complex JSON structures with our collapsible tree view. Click to expand/collapse nodes, search within the tree, and edit values inline.
Code View - Monaco Editor with Syntax Highlighting
Edit JSON with the same powerful editor used in VS Code. Features syntax highlighting, auto-completion, error detection, and VS Code keybindings.
Table View - Tabular Display for JSON Arrays
View JSON arrays as interactive tables. Sort columns, filter rows, resize columns, and export to CSV with a single click.
Real-Time JSON Validation
Validate JSON syntax as you type. Support for JSON Schema validation with detailed error messages and line highlighting.
JSONPath Query Tool
Query complex JSON documents using JSONPath expressions. Extract specific data, filter arrays, and navigate nested objects. Learn more in our JSONPath examples guide.
Format Conversion
Convert JSON to CSV, XML, YAML and back. Import from multiple formats and export in your preferred format with customizable options.
JSON Diff & Compare
Compare two JSON files side by side and see differences instantly. Track added, removed, and modified fields with color-coded highlights and detailed change reports.
Convert JSON to CSV, XML, YAML & More
JSON to CSV Converter
Convert JSON arrays to CSV format for Excel, Google Sheets, or data analysis. Handles nested objects, custom delimiters, and large datasets (1MB+). See our CSV conversion guide.
JSON to XML Converter
Transform JSON to XML format with customizable root element and attributes. Perfect for SOAP APIs, RSS feeds, and XML-based systems. Read about JSON vs XML.
JSON to YAML Converter
Convert JSON to YAML for Kubernetes configs, Docker Compose files, and CI/CD pipelines. Maintains readability and structure.
CSV to JSON Converter
Import CSV files and convert to JSON arrays. Auto-detect delimiters, handle headers, and support for complex data types. Learn more in our blog.
Advanced JSON Manipulation Tools
JSON Diff & Compare
Compare two JSON files and visualize differences. Highlight added, modified, and removed fields with color coding.
JSON Schema Validator
Validate JSON against JSON Schema (Draft 7, 2019-09, 2020-12). Get detailed validation errors with line numbers and suggestions. Read our JSON Schema guide.
TypeScript Type Generator
Generate TypeScript interfaces and types from JSON structure. Perfect for type-safe API integration and development. Learn more in our TypeScript types guide.
JSON Formatter & Beautifier
Format JSON with customizable indentation (2/4 spaces, tabs). Sort keys alphabetically, minify, or beautify with one click. Check out our formatting best practices.
Why Choose JSON Editor Online?
100% Client-Side - Your Data Never Leaves Your Browser
All processing happens locally in your browser. No server uploads, no data storage, complete privacy. Perfect for sensitive data.
Handle Large JSON Files (10MB+)
Process large JSON files efficiently with Web Workers and virtual scrolling. No size limits, no performance degradation.
No Signup Required - Start Immediately
No account creation, no email, no login. Just open the page and start editing. Auto-save to localStorage for convenience.
Free Forever - No Hidden Costs
All features completely free. No premium tiers, no paid plans, no feature limitations. Open source and community-driven.
Frequently Asked Questions
What is a JSON editor?
A JSON editor is a tool that allows you to view, edit, validate, and format JSON (JavaScript Object Notation) data. It provides features like syntax highlighting, error detection, and structure visualization to make working with JSON easier.
Is JSON Editor Online free?
Yes, JSON Editor Online is completely free with all features unlocked. There are no premium tiers, paid plans, or hidden costs. All processing happens in your browser, so there are no server costs.
Is my JSON data safe and private?
Absolutely. All JSON processing happens 100% client-side in your browser. Your data never leaves your computer - nothing is uploaded to any server. Perfect for confidential or sensitive JSON data.
What file size can JSON Editor handle?
JSON Editor Online can handle large files up to 10MB efficiently using Web Workers and virtual scrolling. For files over 10MB, you may experience slower performance depending on your device.
Can I convert JSON to CSV/XML/YAML?
Yes! JSON Editor includes built-in converters for JSON to CSV, XML, and YAML formats. You can also convert back from these formats to JSON.
Does JSON Editor work offline?
Yes, after the first load, JSON Editor works completely offline. All features are available without an internet connection since everything runs in your browser.
Can I compare two JSON files?
Yes! Use the Compare feature to view differences between two JSON files side by side. The tool highlights added, removed, and modified fields with color-coded indicators and provides a detailed summary of all changes. Perfect for API version comparison, config file auditing, or tracking data changes.
Start Editing JSON Files for Free
No signup required. No credit card. No installation. Just start editing.
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