All JSON Tools

Free online JSON tools for developers. Format, validate, convert and compare JSON — all in one place.

Formatters & Editors

JSON Beautifier

Format and beautify your JSON with proper indentation and syntax highlighting.

Compress JSON by removing whitespace to reduce file size.

Convert escaped/stringified JSON back into a clean, readable object.

Validators

Validate JSON syntax in real-time with detailed error reporting.

JSON Schema Validator

Validate a JSON document against a JSON Schema (Draft-07) with detailed errors.

Converters

Convert JSON to YAML format with clean, readable output.

Convert JSON to properly structured XML with encoding declaration.

Convert JSON arrays to spreadsheet-ready CSV format. Download instantly.

JSON Key Sorter

Sort all JSON keys alphabetically — recursively through nested objects.

JSONPath Tester

Test JSONPath expressions against your JSON data and see matching results.

JSON to TypeScript

Generate TypeScript interfaces from any JSON object or array instantly.

JSON Flatten / Unflatten

Flatten nested JSON to dot-notation keys or unflatten back to nested objects.

Utilities

Decode JWT tokens and inspect header, payload, and expiry status.

Automatically fix broken JSON — trailing commas, missing quotes, and more.

JSON Table Viewer

Visualize JSON arrays as an interactive table.

Convert YAML to JSON format instantly.

Convert CSV data to a JSON array. Headers become object keys.

Convert XML to JSON format, preserving attributes and nesting.

JSON to Zod Schema

Generate a Zod validation schema from any JSON object.

JSON Mock Generator

Generate realistic fake JSON data from a JSON Schema. Supports formats, enums, and nesting.

Comparison

JSON Diff Checker

Compare two JSON documents and highlight added and removed lines.