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JSON Tools

Browse our free JSON Tools collection for developers. Every tool works in your browser with no installation required.

30 tools

Format and beautify JSON data

JSON Schema Validator

Validate JSON against schemas

JSON to TypeScript

Generate TypeScript interfaces

Array Sorter & Shuffler

Sort and shuffle arrays and objects

Sort JSON keys alphabetically

Generate Zod schemas from JSON

Fix broken JSON from LLMs, logs and JavaScript objects

View JSON arrays and API responses as a sortable, searchable table

Find where any key or value appears in nested JSON

JSON to Excel Converter

Convert JSON arrays into a real .xlsx workbook with a preview first

JSON Schema Generator

Infer a Draft 2020-12 JSON Schema from sample JSON

JSON to Markdown

Convert JSON into Markdown tables, readable sections or AI context

Flatten nested JSON into path keys and unflatten it back

JSON ↔ SQL Converter

Turn JSON into CREATE TABLE and INSERT statements, or SQL INSERT data into JSON

Generate Python dataclasses, Pydantic models or TypedDicts from JSON

Generate Java POJOs, records or Lombok classes from JSON

Generate Go structs with JSON tags from JSON

Generate Swift Codable structs or classes from JSON

Generate Rust structs with Serde attributes from JSON

Generate typed PHP classes with fromArray() from JSON

Generate C# classes or records for System.Text.Json or Newtonsoft.Json

Convert JSONC and JSON5 to strict JSON

Excel to JSON Converter

Turn .xlsx, CSV and TSV sheets into API-ready JSON in your browser

JSON ↔ Protobuf Toolkit

Infer .proto schemas from JSON, or encode and decode Protobuf payloads with your schema

JSON ↔ TOON Converter

Convert JSON to TOON and back for compact LLM prompts

JSON Query Playground

Run real jq on JSON and JSONL in your browser and see the output as you type

JSON Log Viewer & Analyzer

Open, search and filter JSONL, NDJSON and Docker JSON logs in your browser with a fast virtualized event list

JSONPath Query Playground

Test RFC 9535 JSONPath queries and see every match with its path

Generate Kotlin data classes from JSON for kotlinx.serialization, Gson, Moshi or Jackson

JSON ↔ TOML Converter

Convert JSON to TOML and TOML to JSON with every lossy change listed

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