✨ JSON Formatter & Validator

The core tool allows you to paste raw, unformatted JSON and instantly make it readable, validate it for syntax errors, or compress it.

• 1 Paste your JSON into the left "Input Source" panel.
• 2 Click "Beautify JSON" to indent and colorize it.
• 3 Click "Minify JSON" to remove all spaces for production use.

💻 Generate Code (Java, C#, TS, etc.)

Instantly convert any JSON response into strict typed classes and models for your frontend or backend applications.

• 1 Paste a valid JSON object in the left panel.
• 2 Click the "JSON → Code" tab on the right panel.
• 3 Select your desired language (e.g., Java, TypeScript) from the dropdown.
• 4 Click "Download Project" to get a ready-to-run ZIP file.

🚀 Live Mock API Deployment

Need an endpoint to test your frontend? You can host your JSON as a live API instantly.

• 1 Write your desired API response in the left JSON editor.
• 2 Click the glowing "Deploy as Mock API" button below the editor.
• 3 The system will generate a secure URL (e.g., /api/v1/mock/xyz). Use this URL in your application's fetch() requests.

🔍 Visual JSON Diff Tool

Compare two different JSON payloads side-by-side to easily spot additions, deletions, and value changes.

• 1 Click the "JSON Diff" tab on the right panel.
• 2 Paste your "Original" JSON on the left.
• 3 Paste your "Modified" JSON on the right.
• 4 Click "Compare JSON" to highlight the differences in red and green.

✅ JSON Schema Validator

Validate JSON payloads against JSON Schema definitions directly in your browser with real-time inline diagnostics.

• 1 Click the "Schema Validator" tab in the navigation bar.
• 2 Paste or write your JSON Schema on the left editor pane.
• 3 Enter the JSON data payload to validate on the right pane.
• 4 Validation results appear live — green for valid, red with error counts for invalid payloads.

📜 OpenAPI / Swagger Spec Generator

Convert any JSON object into a valid OpenAPI 3.0.3 YAML specification. The engine generates endpoint definitions, schemas, request bodies, and places reusable models under components.schemas.

• 1 Paste a valid JSON object or array in the left editor.
• 2 Switch to the "JSON → Code" tab and select "OpenAPI 3.0 (YAML)" from the language dropdown.
• 3 Click "Generate Code" to produce a complete OpenAPI specification with GET/POST endpoints.
• 4 Copy or download the YAML output for use with Swagger UI, Redoc, or API code generators.

🎲 Synthetic JSON Mock Data Generator

Generate realistic fake JSON datasets for testing, seeding databases, or populating frontend prototypes. The engine detects field names and injects contextually appropriate mock values — UUIDs, email addresses, full names, ISO timestamps, geo addresses, prices, and more.

• 1 Click the "Mock Generator" tab in the navigation bar.
• 2 Select a template preset (User Profile, E-Commerce Order, API Audit Event) or choose "Left JSON Template" to use your own sample object.
• 3 Set the desired batch count (1–100 records) using the count input field.
• 4 Click "✨ Generate Synthetic Data" to produce the array of mock records in the output panel.
• 5 Copy, download, or deploy the generated dataset directly as a Mock API endpoint.

🕸️ GraphQL Schema & Query Exporter

Convert any JSON payload into strongly-typed GraphQL type definitions, input types, and sample Query and Mutation operations.

• 1 Paste your JSON object in the input pane.
• 2 Select "GraphQL Schema" from the language dropdown under the "JSON → Code" tab.
• 3 Click "Generate Code" to produce type blocks, scalar type inference (ID!, Int!, Float!, Boolean!, String!), and CRUD operation blueprints.

🗄️ SQL DDL & Migration Exporter

Export database tables and insert statements tailored for PostgreSQL, MySQL, or SQLite, plus generate versioned Flyway SQL migrations or Liquibase XML changelogs.

• 1 Select "SQL" from the language dropdown.
• 2 Choose your target database dialect (PostgreSQL, MySQL, or SQLite).
• 3 Choose your export format: Standard DDL, Flyway SQL script, or Liquibase XML changelog.
• 4 Click "Generate Code" and download your migration script file.

⚡ Protobuf / gRPC Schema Generator

Generate clean, production-ready Protocol Buffer proto3 message definitions and gRPC service declarations.

• 1 Select "Protobuf (.proto)" from the language dropdown.
• 2 Click "Generate Code" to produce indexed fields, composed messages, and gRPC RPC declarations.

🎯 Dart / Flutter Code Generator

Generate Flutter-ready Dart model classes fully compatible with the json_serializable package.

• 1 Select "Dart (Flutter)" from the language dropdown.
• 2 The engine creates null-safe fields (?), @JsonKey mapping annotations, factory fromJson, and toJson methods.

🚀 Postman Collection Exporter (v2.1)

Export JSON payloads and Mock API configurations as valid Postman v2.1.0 collection files ready for instant import into Postman, Insomnia, or Bruno API clients.

• 1 Select "Postman Collection v2.1" from the language dropdown.
• 2 Click "Generate Code" to produce a JSON collection containing GET, POST, PUT, and DELETE CRUD request blueprints with raw JSON bodies and {{baseUrl}} environment variables.
• 3 Click "Download File" to save the postman_collection.json file and import it directly into your favorite API client.

🔍 JSONPath & JSONPointer Query Evaluator

Evaluate, test, and extract data using JSONPath expressions ($.store.book[*].author, $..id) or RFC 6901 JSONPointer paths (/users/0/email) in real time.

• 1 Type or paste your query into the workspace top toolbar query input field.
• 2 Press Enter or click "Filter". The engine automatically detects the syntax and extracts matching nodes, displaying live match count badges.

🎲 JSON Schema to Mock Data Generator

Generate synthetic fake JSON records conforming strictly to JSON Schema (Draft-07 / Draft 2020-12) validation rules.

• 1 Paste your JSON Schema definition into the editor.
• 2 Select "JSON Schema to Mock Data" from the tools list.
• 3 The engine produces valid mock payloads satisfying string formats (email, uuid, date-time), numeric ranges (minimum, maximum), enum choices, and array constraints.

🩹 RFC 6902 JSON Patch Exporter

Compare two JSON versions and generate executable RFC 6902 JSON Patch documents containing add, remove, and replace operations.

• 1 Open the "JSON Diff" tab in the navigation bar.
• 2 Paste the original JSON payload on the left pane and the modified JSON on the right pane.
• 3 Click "Export RFC 6902 Patch" to generate the JSON Patch array formatted with JSONPointer paths.

⌨️ Keyboard Shortcuts

Power users can speed up their workflow with these shortcuts.

• ? ? — Open the Keyboard Shortcuts reference modal.
• ⏎ Ctrl + Enter — Beautify JSON (Formatter tab) or Generate Code (Code tab).
• P Alt + P — Toggle the left input panel visibility.
• S Alt + S — Load the sample JSON payload.
• C Alt + C — Clear the editor contents.