JSON Tools for Developers
Work with JSON faster using our free browser-based tools. Format messy JSON, validate syntax, compare two JSON objects, convert to CSV or YAML, and more. All processing happens locally in your browser – your data never leaves your device.
JSON Tools (8 Tools)
JSON Formatter
Beautify and format JSON data with syntax highlighting
JSON Validator
Validate JSON syntax and structure with detailed error messages
JSON Diff
Compare two JSON objects and highlight differences
JSON Minifier
Minify JSON by removing whitespace
JSON to CSV
Convert JSON arrays to CSV format
JSON to YAML
Convert JSON data to YAML format
CSV to JSON
Convert CSV data to JSON format
XML to JSON
Convert XML data to JSON format
What Are JSON Tools?
JSON (JavaScript Object Notation) is the backbone of modern web development. Originally derived from JavaScript, JSON has become the universal standard for data interchange between servers and web applications, configuration files, and NoSQL databases. Its lightweight, human-readable format makes it ideal for APIs, real-time data streaming, and storing structured information. Unlike XML, JSON's minimal syntax reduces payload sizes and parsing complexity, which is why it powers everything from REST APIs to MongoDB documents. Our JSON tools help developers work with this essential format more efficiently, whether you're debugging API responses, cleaning up configuration files, or transforming data between systems.
Common Use Cases
API Development & Debugging
Format and validate JSON responses from REST APIs, debug malformed payloads, and compare different API versions to track changes.
Configuration Management
Clean up and validate JSON configuration files for applications, Docker containers, and cloud services like AWS or Firebase.
Data Transformation
Convert JSON to CSV for spreadsheet analysis, or to YAML for Kubernetes deployments. Transform between formats without writing code.
Database Operations
Prepare JSON documents for MongoDB, CouchDB, or other document databases. Validate structure before import to avoid schema errors.
Why Use Our JSON Tools?
- Instant formatting with proper indentation and syntax highlighting
- Real-time validation that catches errors as you type
- Side-by-side diff comparison for tracking changes
- One-click conversion to CSV, YAML, and other formats
- 100% client-side processing – your data stays private
Frequently Asked Questions
What is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write, and easy for machines to parse and generate. It's widely used for APIs, configuration files, and data storage.
How do I format JSON online?
Paste your JSON into our JSON Formatter tool and click Format. The tool will instantly beautify your JSON with proper indentation and syntax highlighting, making it easy to read and debug.
What's the difference between JSON and YAML?
Both are data serialization formats. JSON uses braces and brackets with strict syntax, while YAML uses indentation and is more human-readable. YAML is often preferred for configuration files, while JSON is standard for APIs.
Is my JSON data safe with these tools?
Yes, 100%. All our JSON tools run entirely in your browser. Your data never leaves your device or gets sent to any server.