✨ 100+ Free JSON Tools

Free JSON Tools

Powerful, fast, and privacy-focused JSON utilities

All tools run entirely in your browser. No data leaves your device.

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Lightning Fast

All processing happens instantly in your browser

100% Private

Your data never leaves your device

Free Forever

No signup required, no hidden fees

Popular JSON Tools

JSON Formatter

Beautify and format JSON with syntax highlighting

JSON Validator

Validate JSON syntax and find errors

JSON Editor

Edit JSON with tree and code views

JSON to CSV

Convert JSON arrays to CSV format

CSV to JSON

Convert CSV data to JSON format

JSON Minifier

Compress JSON by removing whitespace and comments

JSON Diff

Compare two JSON objects and find differences

JSON Merge

Merge two JSON objects together

JSON to XML

Convert JSON data to XML format

XML to JSON

Convert XML data to JSON format

JSON to YAML

Convert JSON data to YAML format

YAML to JSON

Convert YAML data to JSON format

Escape/Unescape

Escape or unescape JSON strings

JWT Decoder

Decode JWT tokens and view header/payload

Fake Generator

Generate fake JSON data for testing

Highlighted Formatter

Format JSON with syntax highlighting and line numbers

JSON Viewer

View JSON in a beautiful tree structure

Pretty Printer

Advanced JSON formatting with options

Auto Fix

Automatically fix minor JSON errors

Structure Analyzer

Analyze JSON depth, size, and key count

JSON Sorter

Sort JSON by keys alphabetically

Convert JSON Formats

Transform JSON to and from various data formats

JSON to Excel

Convert JSON to Excel format

Excel to JSON

Convert Excel to JSON format

JSON to SQL

Convert JSON to SQL statements

JSON to HTML Table

Convert JSON to HTML table

JSON to Markdown

Convert JSON to Markdown format

JSON to INI

Convert JSON to INI format

INI to JSON

Convert INI to JSON format

JSON to TOML

Convert JSON to TOML format

TOML to JSON

Convert TOML to JSON format

JSON to Plist

Convert JSON to Plist (iOS)

JSON to ProtoBuf

Convert JSON to ProtoBuf

JSON to SQL Insert

Convert JSON to SQL INSERT statements

JSON to cURL

Convert JSON to cURL command

Analyze & Debug

Powerful tools to analyze, compare, and debug your JSON data

JSON Linter

Lint and find issues in JSON

JSON Benchmark

Benchmark JSON parsing performance

Size Calculator

Calculate JSON size and statistics

Structure Graph

Visualize JSON structure as a graph

Duplicate Keys Detector

Find duplicate keys in JSON

Missing Keys Finder

Find missing keys in JSON objects

Syntax Highlighter

Highlight JSON syntax with colors

JSON Compare

Compare two JSON objects side-by-side

Developer Tools

Essential tools for API development and testing

Base64 to JSON

Decode Base64 to JSON

JSON to Base64

Encode JSON to Base64

Code Generator

Generate code from JSON schema

API Request Tester

Test API requests with JSON

API Response Formatter

Format API JSON responses

API Rate Limit Test

Test API rate limits

API Mock Server

Create mock API server with JSON

API to JSON Extractor

Extract JSON from API responses

JSON to Dart

Convert JSON to Dart model classes

JSON to Java

Generate Java POJO classes from JSON

JSON to Kotlin

Generate Kotlin data classes from JSON

JSON to Swift

Convert JSON to Swift model structs

JSON to Go

Generate Go structs from JSON

JSON to Rust

Generate Rust structs from JSON

JSON to PHP

Convert JSON to PHP arrays

JSON to C#

Generate C# classes from JSON

JSON to Python

Generate Python dataclasses from JSON

Schema Tools

Generate, validate, and work with JSON schemas

Schema Validator

Validate JSON against a schema

Schema Generator

Generate JSON schema from JSON data

Schema to TypeScript

Convert JSON schema to TypeScript

Schema Merger

Merge multiple JSON schemas

Schema to Form

Generate form from JSON schema

Schema Visualizer

Visualize JSON schema structure

Bulk Schema Validator

Validate multiple JSON files against schema

Utilities

Handy utilities for everyday JSON tasks

UUID Generator

Generate UUIDs for JSON

Random Generator

Generate random JSON data

Color Picker to JSON

Convert colors to JSON format

URL Parser

Parse URL query strings to JSON

Time Converter

Convert timestamps in JSON

Array Shuffle

Shuffle JSON array elements

Key Renamer

Rename keys in JSON objects

Export & File Ops

Export and process multiple JSON files

Gzip Compressor

Compress JSON with Gzip

JSON to Markdown Export

Export JSON to Markdown file

JSON to HTML Export

Export JSON to HTML file

JSON to ZIP

Export JSON files to ZIP archive

JSON Report PDF

Generate PDF report from JSON

Transform Data

Powerful tools to transform and manipulate JSON structures

Flatten

Flatten nested JSON objects

Unflatten

Unflatten JSON to nested structure

Filter by Key

Filter JSON by key patterns

Remove Keys

Remove specific keys from JSON

Extract Data

Extract specific data from JSON

Remove Null Values

Remove null values from JSON

Group by Key

Group JSON array by key

Array to Map

Convert array to map structure

Convert String Types

Convert string types in JSON

Extract URLs

Extract all URLs from JSON data

Extract Emails

Extract all email addresses from JSON

Extract Phone Numbers

Extract phone numbers from JSON data

Extract Numbers

Extract all numeric values from JSON

Bulk Operations

Process multiple JSON files at once

Bulk Formatter

Format multiple JSON files

Bulk Validator

Validate multiple JSON files

Bulk CSV to JSON

Convert multiple CSV files to JSON

Bulk Rename Keys

Rename keys in multiple JSON files

Bulk Find & Replace

Find and replace in multiple JSON files

Bulk Diff

Compare multiple JSON files

Bulk Merge

Merge multiple JSON files

Security & Encoding

Secure your JSON data with encryption and encoding tools

Sanitizer

Sanitize JSON data

Encrypt/Decrypt

Encrypt and decrypt JSON data

Signature Verifier

Verify JSON signatures

JSON to QR Code

Convert JSON to QR code

QR Code to JSON

Decode QR code to JSON