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JSON Workbench Tools

A complete toolkit for working with JSON, APIs, schemas, code generation and test data.

💡 How to use these tools

All tools are seamlessly integrated into the JSON Workbench editor. Simply click on any tool below to launch the editor.

For formatting, decoding, or querying: Use the dedicated buttons on the left Input Panel.
For Code and Format conversions: Select your desired output language from the dropdown menu on the right Generated Output panel.

🧰 Core JSON Tools

JSON Formatter & Beautifier

Format, indent, and beautify your raw JSON data to make it readable. Includes AI Explanation.

Instantly validate your JSON string to find syntax errors and missing commas.

Compress your JSON data by removing all whitespace and newlines for smaller payload sizes.

Visual JSON Diff

Compare two JSON payloads side-by-side to instantly find additions, deletions, and modifications.

JSONPath Filter

Query and filter massive JSON payloads using JSONPath syntax right in your browser.

Base64 / JWT Decoder

Instantly decode Base64 encoded strings or extract headers and payloads from JWT Authentication tokens.

Synthetic JSON Mock Generator

Generate realistic fake JSON datasets with custom field rules (UUIDs, emails, dates, names, avatars).

💻 Code Generators

JSON to Java (Lombok)

Generate robust Spring Boot compatible Java DTO classes with Lombok and JPA annotations.

JSON to TypeScript

Convert JSON payloads into strict TypeScript interfaces and types for your frontend projects.

Generate Python Data Classes or Pydantic models from standard JSON structures.

JSON to Go Structs

Generate idiomatic Golang structs with proper `json` tagging natively.

JSON to C# Classes

Generate pristine C# properties with `[JsonPropertyName]` attributes.

JSON to Kotlin Data Classes

Convert JSON responses to idiomatic Kotlin data classes for Android development.

JSON to Swift Structs

Generate Codable Swift structs from JSON for iOS and macOS applications.

JSON to Rust Structs

Generate serde-compatible Rust structs with proper derives.

JSON to Dart (Flutter)

Generate json_serializable compatible Dart classes with fromJson/toJson factory constructors.

Class / Model to JSON

Reverse parse Java classes/records, TypeScript, C#, Go structs, or Python models into sample JSON objects.

JSON to OpenAPI Spec

Generate valid, interactive OpenAPI 3.0 YAML specifications dynamically.

JSON to GraphQL Schema

Convert JSON payloads into GraphQL types, inputs, and sample Query/Mutation operations.

JSON to Protobuf / gRPC

Generate proto3 message definitions and gRPC service declarations from JSON payloads.

🔄 Format Converters

Convert standard JSON files into highly readable YAML format.

Flatten arrays of JSON objects into tabular CSV format for Excel.

JSON to SQL & Migrations

Generate CREATE TABLE DDL schemas, Flyway migrations, and Liquibase XML changelogs for PostgreSQL, MySQL, and SQLite.

Generate boilerplate curl POST scripts from your JSON payload.

JSON to Postman Collection

Export JSON payloads and endpoints into Postman v2.1 importable collection files.

JSONPath & JSONPointer Query

Evaluate $.store.book[*] and /users/0 expressions against JSON payloads in real time.

JSON Schema to Mock Data

Generate synthetic fake JSON records conforming strictly to JSON Schema validation rules.

RFC 6902 JSON Patch Exporter

Export executable add, remove, and replace operations between two JSON versions.

JSON to Excel Exporter

Export JSON objects and arrays into structured Excel spreadsheet files with key flattening.

Strip away bash junk from copied cURL requests to instantly extract the JSON body payload.

Data to JSON Convert

Auto-detect and convert YAML, CSV, URL Query Strings, and Java/C# Classes into Mock JSON.