Free Online JSON Tools
Collection of 50+ free online JSON tools: formatter, validator, converter, diff checker, schema generator, and more. No signup required.
78 tools available
JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting
JWT Decoder
Decode and inspect JSON Web Tokens (header, payload, signature)
JSON ā YAML Converter
Convert JSON to YAML and YAML to JSON online instantly
CSV ā JSON Converter
Convert JSON to CSV and CSV to JSON online for free
Escape / Unescape
Escape or unescape HTML, JavaScript, and JSON strings
HTML Table Generator
Convert CSV or JSON to HTML table markup
JSON to TypeScript
Convert JSON to TypeScript interfaces and types online
JSON to Go
Convert JSON to Go struct definitions online
JSON to Go Struct Converter
Generate Go struct definitions from JSON with customizable options
JSON to GraphQL
Convert JSON data to GraphQL schema definitions
JSON to Java Class
Convert JSON data to Java class definitions
JSON to Kotlin
Convert JSON data to Kotlin data classes
JSON to Python
Convert JSON to Python dataclass, TypedDict, or Pydantic model
JSON to C#
Convert JSON data to C# class definitions
JSON to Zod Schema
Convert JSON data to Zod validation schemas
JSON to JSON Schema
Convert JSON to JSON Schema ā generate schema from JSON instantly
JSON to Rust Struct
Convert JSON data to Rust struct definitions with serde
XML to JSON Converter
Convert XML to JSON online ā free XML to JSON converter
Schema Markup Generator
Generate JSON-LD structured data for rich snippets in search results
JSON Viewer / Tree
View JSON data as an interactive collapsible tree
JSON Path Finder
Paste JSON, click any node to get its JSONPath expression
JSON to Dart
Convert JSON to Dart/Flutter classes
JSON to Protobuf
Convert JSON to protobuf
YAML ā JSON Converter
Convert between YAML and JSON formats with real-time preview
Json Beautifier
Json Beautifier - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Validator
Json Validator - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Minifier
Json Minifier - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Vs Yaml
Json Vs Yaml - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Vs Xml
Json Vs Xml - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
JSON to Table
Convert JSON data to an interactive, sortable HTML table with search, filter, and CSV export
JSON to CSV Converter
Convert JSON arrays to CSV with customizable delimiters and options
Online Json Editor
Online Json Editor - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Yaml To Json
Yaml To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Beautifier
Json Beautifier - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Yaml
Json To Yaml - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Csv To Json
Csv To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Minify
Json Minify - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Xml
Json To Xml - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Schema Generator
Json Schema Generator - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Csv
Json To Csv - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Zod
Json To Zod - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Diff Tool
Json Diff Tool - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
JSON to XML Converter
Convert JSON to XML
Json Path Tester
Json Path Tester - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Yaml To Json
Yaml To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Jwt Debugger
Jwt Debugger - Free online tool for JWT token decoding. Fast, secure, and easy to use.
Xml To Json
Xml To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Yaml
Json To Yaml - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Yaml To Json
Yaml To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Prettifier
Json Prettifier - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Csv To Json
Csv To Json - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Typescript
Json To Typescript - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Validator
Json Validator - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json To Mysql Schema
Json To Mysql Schema - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
Json Minifier
Json Minifier - Free online tool for JSON data processing and conversion. Fast, secure, and easy to use.
TOML ā JSON Converter
Convert between TOML and JSON formats
JSON to JSON Schema Generator
Generate JSON Schema from JSON data automatically. Create Draft-07 compliant schemas with type inference and validation rules.
JSON Schema Validator
Validate JSON data against JSON Schema specifications
TOML Editor
TOML editor, validator and JSON converter
JSON to Swift
Convert JSON to Swift Codable structs
JSON to PHP
Convert JSON to PHP arrays/classes
.env to JSON Converter
Convert environment variable files to JSON format
JSON to HTML Form
Generate HTML forms from JSON data
JSON to GraphQL Schema
Convert JSON to GraphQL types
JSON to SQL
Convert JSON data to SQL INSERT statements
JSON to Scala
Convert JSON to Scala case classes
JSON to Rust Struct
Convert JSON data to Rust struct definitions with serde support
JSON to Protobuf
Convert JSON to Protocol Buffer definitions
SQL to JSON Schema
Convert SQL CREATE TABLE to JSON schema
YAML Editor
YAML editor with validation and JSON conversion
API Response Generator
Generate mock API responses
JSON to CSV Online
Convert JSON to CSV format
JSON to Rust Serde
Convert JSON to Rust structs
JSONPath Evaluator
Evaluate JSONPath expressions
JSON Key Sorter
Sort JSON keys alphabetically
TOML ā JSON Converter
Convert TOML to JSON and JSON to TOML online instantly
INI ā JSON Converter
Convert INI config files to JSON and JSON to INI online
Plist ā JSON Converter
Convert Apple Property List (plist) XML to JSON and back
About Free Online JSON Tools
DevToolBox provides a collection of free online developer tools to help you efficiently complete everyday development tasks. This category includes 78 tools, all running directly in your browser with no installation required. Your data stays on your device and is never sent to our servers, ensuring complete privacy.
All tools are completely free with no registration or login required. Available in 15 languages for developers worldwide.