📋 Free Online JSON Tools 39 tools

★★★★½ 4.8 (2100 ratings)

🔄 Online CSV to JSON Converter Free online CSV to JSON converter with bidirectional conversion, automatic header detection, custom delimiters, neste... 🔄 Online CSV to JSON Converter Free online CSV to JSON converter with bidirectional conversion, automatic header detection, custom delimiters, neste... 🔄 Online CSV to JSON Converter Free online CSV to JSON converter with bidirectional conversion, automatic header detection, custom delimiters, neste... 🔄 Online CSV to JSON Converter Free online CSV to JSON converter with bidirectional conversion, automatic header detection, custom delimiters, neste... 🔧 Excel to JSON Converter Free online Excel to JSON converter. Upload .xlsx, .xls or .csv files and convert to JSON format instantly. Customiza... 🔧 Excel to JSON Converter Free online Excel to JSON converter. Upload .xlsx, .xls or .csv files and convert to JSON format instantly. Customiza... 🔧 Excel to JSON Converter Free online Excel to JSON converter. Upload .xlsx, .xls or .csv files and convert to JSON format instantly. Customiza... 🔧 Excel to JSON Converter Free online Excel to JSON converter. Upload .xlsx, .xls or .csv files and convert to JSON format instantly. Customiza... 🔧 Online HTML Table to JSON - Extract Tables to JSON/CSV Free online HTML Table to JSON converter, pure client-side. Extract HTML table data into JSON or CSV format. Supports... 🔧 Online HTML Table to JSON - Extract Tables to JSON/CSV Free online HTML Table to JSON converter, pure client-side. Extract HTML table data into JSON or CSV format. Supports... 🔧 Online HTML Table to JSON - Extract Tables to JSON/CSV Free online HTML Table to JSON converter, pure client-side. Extract HTML table data into JSON or CSV format. Supports... 🔧 Online HTML Table to JSON - Extract Tables to JSON/CSV Free online HTML Table to JSON converter, pure client-side. Extract HTML table data into JSON or CSV format. Supports... 🛠️ INI to JSON Converter Free online INI to JSON converter. Convert INI configuration files to JSON format with one click. Supports sections, ... 🛠️ INI to JSON Converter Free online INI to JSON converter. Convert INI configuration files to JSON format with one click. Supports sections, ... 🛠️ INI to JSON Converter Free online INI to JSON converter. Convert INI configuration files to JSON format with one click. Supports sections, ... 🛠️ INI to JSON Converter Free online INI to JSON converter. Convert INI configuration files to JSON format with one click. Supports sections, ... 🔧 JSON Diff Tool Free online JSON diff tool. Compare two JSON objects side by side with highlighted differences. Supports nested objec... 🔧 JSON Diff Tool Free online JSON diff tool. Compare two JSON objects side by side with highlighted differences. Supports nested objec... 🔧 JSON Diff Tool Free online JSON diff tool. Compare two JSON objects side by side with highlighted differences. Supports nested objec... 🔧 JSON Diff Tool Free online JSON diff tool. Compare two JSON objects side by side with highlighted differences. Supports nested objec... 🔧 Online JSON Diff Tool Free online JSON diff tool. Compare two JSON files or texts side by side with deep structural analysis. Tree-view vis... 🔧 Online JSON Diff Tool Free online JSON diff tool. Compare two JSON files or texts side by side with deep structural analysis. Tree-view vis... 🔧 Online JSON Diff Tool Free online JSON diff tool. Compare two JSON files or texts side by side with deep structural analysis. Tree-view vis... 🔧 Online JSON Diff Tool Free online JSON diff tool. Compare two JSON files or texts side by side with deep structural analysis. Tree-view vis... 🔧 JSON Editor Free online JSON editor with tree view and text view. Real-time syntax highlighting and validation. Format, minify JS... 🔧 JSON Editor Free online JSON editor with tree view and text view. Real-time syntax highlighting and validation. Format, minify JS... 🔧 JSON Editor Free online JSON editor with tree view and text view. Real-time syntax highlighting and validation. Format, minify JS... 🔧 JSON Editor Free online JSON editor with tree view and text view. Real-time syntax highlighting and validation. Format, minify JS... 🔧 JSON Escape/Unescape Free online JSON escape/unescape tool. Escape or unescape special characters in JSON strings including quotes, backsl... 🔧 JSON Escape/Unescape Free online JSON escape/unescape tool. Escape or unescape special characters in JSON strings including quotes, backsl... 🔧 JSON Escape/Unescape Free online JSON escape/unescape tool. Escape or unescape special characters in JSON strings including quotes, backsl... 🔧 JSON Escape/Unescape Free online JSON escape/unescape tool. Escape or unescape special characters in JSON strings including quotes, backsl... 🗂️ ️ JSON Flattener Free online JSON flattener. Convert nested JSON objects to flat key-value pairs. Customizable separator (dot, undersc... 🗂️ ️ JSON Flattener Free online JSON flattener. Convert nested JSON objects to flat key-value pairs. Customizable separator (dot, undersc... 🗂️ ️ JSON Flattener Free online JSON flattener. Convert nested JSON objects to flat key-value pairs. Customizable separator (dot, undersc... 🗂️ ️ JSON Flattener Free online JSON flattener. Convert nested JSON objects to flat key-value pairs. Customizable separator (dot, undersc... 📋 Online JSON Formatter Free online JSON formatter, pure front-end local processing—no upload. Beautify, minify, validate with error hints, t... 📋 Online JSON Formatter Free online JSON formatter, pure front-end local processing—no upload. Beautify, minify, validate with error hints, t... 📋 Online JSON Formatter Free online JSON formatter, pure front-end local processing—no upload. Beautify, minify, validate with error hints, t... 📋 Online JSON Formatter Free online JSON formatter, pure front-end local processing—no upload. Beautify, minify, validate with error hints, t... 🔧 Mock JSON Data Generator Free online Mock JSON Data Generator. Create fake API data from schema definitions. Supports string/integer/number/bo... 🔧 Mock JSON Data Generator Free online Mock JSON Data Generator. Create fake API data from schema definitions. Supports string/integer/number/bo... 🔧 Mock JSON Data Generator Free online Mock JSON Data Generator. Create fake API data from schema definitions. Supports string/integer/number/bo... 🔧 Mock JSON Data Generator Free online Mock JSON Data Generator. Create fake API data from schema definitions. Supports string/integer/number/bo... 🔧 JSON Validator & Formatter Free online JSON validator and formatter. Check JSON syntax errors, beautify JSON, minify JSON, show error line and p... 🔧 JSON Validator & Formatter Free online JSON validator and formatter. Check JSON syntax errors, beautify JSON, minify JSON, show error line and p... 🔧 JSON Validator & Formatter Free online JSON validator and formatter. Check JSON syntax errors, beautify JSON, minify JSON, show error line and p... 🔧 JSON Validator & Formatter Free online JSON validator and formatter. Check JSON syntax errors, beautify JSON, minify JSON, show error line and p... 🔧 JSON Minifier & Beautifier Free online JSON minifier and beautifier. Compress JSON to reduce size, save bandwidth and storage. Or format/beautif... 🔧 JSON Minifier & Beautifier Free online JSON minifier and beautifier. Compress JSON to reduce size, save bandwidth and storage. Or format/beautif... 🔧 JSON Minifier & Beautifier Free online JSON minifier and beautifier. Compress JSON to reduce size, save bandwidth and storage. Or format/beautif... 🔧 JSON Minifier & Beautifier Free online JSON minifier and beautifier. Compress JSON to reduce size, save bandwidth and storage. Or format/beautif... 🔧 JSON Mock Data Generator Free online JSON mock data generator. Generate random test data with names, emails, addresses, companies and more. Pu... 🔧 JSON Mock Data Generator Free online JSON mock data generator. Generate random test data with names, emails, addresses, companies and more. Pu... 🔧 JSON Mock Data Generator Free online JSON mock data generator. Generate random test data with names, emails, addresses, companies and more. Pu... 🔧 JSON Mock Data Generator Free online JSON mock data generator. Generate random test data with names, emails, addresses, companies and more. Pu... 🔍 Json Path Tester Json Path Tester 🔍 Json Path Tester Json Path Tester 🔍 Json Path Tester Json Path Tester 🔍 Json Path Tester Json Path Tester 🔧 Online JSON Schema Generator Free online JSON Schema generator. Paste JSON example data to automatically generate JSON Schema definitions. Support... 🔧 Online JSON Schema Generator Free online JSON Schema generator. Paste JSON example data to automatically generate JSON Schema definitions. Support... 🔧 Online JSON Schema Generator Free online JSON Schema generator. Paste JSON example data to automatically generate JSON Schema definitions. Support... 🔧 Online JSON Schema Generator Free online JSON Schema generator. Paste JSON example data to automatically generate JSON Schema definitions. Support... ✅ JSON Schema Validator Free online JSON Schema validator. Validate JSON data against JSON Schema specifications including type checking, req... ✅ JSON Schema Validator Free online JSON Schema validator. Validate JSON data against JSON Schema specifications including type checking, req... ✅ JSON Schema Validator Free online JSON Schema validator. Validate JSON data against JSON Schema specifications including type checking, req... ✅ JSON Schema Validator Free online JSON Schema validator. Validate JSON data against JSON Schema specifications including type checking, req... 🔧 Online JSON Sorter - Sort Keys & Arrays Instantly Free online JSON sorter, pure client-side. Sort JSON keys alphabetically, sort array elements, ascending/descending, ... 🔧 Online JSON Sorter - Sort Keys & Arrays Instantly Free online JSON sorter, pure client-side. Sort JSON keys alphabetically, sort array elements, ascending/descending, ... 🔧 Online JSON Sorter - Sort Keys & Arrays Instantly Free online JSON sorter, pure client-side. Sort JSON keys alphabetically, sort array elements, ascending/descending, ... 🔧 Online JSON Sorter - Sort Keys & Arrays Instantly Free online JSON sorter, pure client-side. Sort JSON keys alphabetically, sort array elements, ascending/descending, ... 🔧 ️ JSON to C# Classes Free online JSON to C# class generator. Automatically generate C# class definitions from JSON. Supports nested object... 🔧 ️ JSON to C# Classes Free online JSON to C# class generator. Automatically generate C# class definitions from JSON. Supports nested object... 🔧 ️ JSON to C# Classes Free online JSON to C# class generator. Automatically generate C# class definitions from JSON. Supports nested object... 🔧 ️ JSON to C# Classes Free online JSON to C# class generator. Automatically generate C# class definitions from JSON. Supports nested object... 🔧 ️ JSON to C# Class Generator Free online JSON to C# class generator. Convert JSON to C# entity classes. Supports nested structures and type infere... 🔧 ️ JSON to C# Class Generator Free online JSON to C# class generator. Convert JSON to C# entity classes. Supports nested structures and type infere... 🔧 ️ JSON to C# Class Generator Free online JSON to C# class generator. Convert JSON to C# entity classes. Supports nested structures and type infere... 🔧 ️ JSON to C# Class Generator Free online JSON to C# class generator. Convert JSON to C# entity classes. Supports nested structures and type infere... 📊 JSON to CSV Converter Free online JSON to CSV converter. Transform JSON data to CSV format with flattening and custom delimiters. Client-si... 📊 JSON to CSV Converter Free online JSON to CSV converter. Transform JSON data to CSV format with flattening and custom delimiters. Client-si... 📊 JSON to CSV Converter Free online JSON to CSV converter. Transform JSON data to CSV format with flattening and custom delimiters. Client-si... 📊 JSON to CSV Converter Free online JSON to CSV converter. Transform JSON data to CSV format with flattening and custom delimiters. Client-si... 📱 JSON to Dart Class Generator Free online JSON to Dart converter. Generate Dart class definitions from JSON with null safety, copyWith, fromJson/to... 📱 JSON to Dart Class Generator Free online JSON to Dart converter. Generate Dart class definitions from JSON with null safety, copyWith, fromJson/to... 📱 JSON to Dart Class Generator Free online JSON to Dart converter. Generate Dart class definitions from JSON with null safety, copyWith, fromJson/to... 📱 JSON to Dart Class Generator Free online JSON to Dart converter. Generate Dart class definitions from JSON with null safety, copyWith, fromJson/to... 🔄 JSON to .env Converter Free online JSON to .env converter. Convert JSON config to environment variable format. Supports nested objects, uppe... 🔄 JSON to .env Converter Free online JSON to .env converter. Convert JSON config to environment variable format. Supports nested objects, uppe... 🔄 JSON to .env Converter Free online JSON to .env converter. Convert JSON config to environment variable format. Supports nested objects, uppe... 🔄 JSON to .env Converter Free online JSON to .env converter. Convert JSON config to environment variable format. Supports nested objects, uppe... 🔧 JSON to Go Struct Generator Free online JSON to Go struct code generator. Convert JSON data to Go struct code with automatic type inference, nest... 🔧 JSON to Go Struct Generator Free online JSON to Go struct code generator. Convert JSON data to Go struct code with automatic type inference, nest... 🔧 JSON to Go Struct Generator Free online JSON to Go struct code generator. Convert JSON data to Go struct code with automatic type inference, nest... 🔧 JSON to Go Struct Generator Free online JSON to Go struct code generator. Convert JSON data to Go struct code with automatic type inference, nest... 🔧 JSON to GraphQL Free online JSON to GraphQL converter. Transform JSON data into GraphQL Schema, Query, and Mutation instantly. Client... 🔧 JSON to GraphQL Free online JSON to GraphQL converter. Transform JSON data into GraphQL Schema, Query, and Mutation instantly. Client... 🔧 JSON to GraphQL Free online JSON to GraphQL converter. Transform JSON data into GraphQL Schema, Query, and Mutation instantly. Client... 🔧 JSON to GraphQL Free online JSON to GraphQL converter. Transform JSON data into GraphQL Schema, Query, and Mutation instantly. Client... 🔧 JSON to Kotlin Data Class Generator Free online JSON to Kotlin data class generator. Convert JSON data to Kotlin data class code with Gson/Moshi/Kotlinx ... 🔧 JSON to Kotlin Data Class Generator Free online JSON to Kotlin data class generator. Convert JSON data to Kotlin data class code with Gson/Moshi/Kotlinx ... 🔧 JSON to Kotlin Data Class Generator Free online JSON to Kotlin data class generator. Convert JSON data to Kotlin data class code with Gson/Moshi/Kotlinx ... 🔧 JSON to Kotlin Data Class Generator Free online JSON to Kotlin data class generator. Convert JSON data to Kotlin data class code with Gson/Moshi/Kotlinx ... 🔧 Json To Protobuf Json To Protobuf 🔧 Json To Protobuf Json To Protobuf 🔧 Json To Protobuf Json To Protobuf 🔧 Json To Protobuf Json To Protobuf 🔧 JSON to Python Dict Generator Free online JSON to Python dict converter. Convert JSON data to Python dictionary code with automatic type inference,... 🔧 JSON to Python Dict Generator Free online JSON to Python dict converter. Convert JSON data to Python dictionary code with automatic type inference,... 🔧 JSON to Python Dict Generator Free online JSON to Python dict converter. Convert JSON data to Python dictionary code with automatic type inference,... 🔧 JSON to Python Dict Generator Free online JSON to Python dict converter. Convert JSON data to Python dictionary code with automatic type inference,... 🦀 JSON to Rust Struct Generator Free online JSON to Rust converter. Generate Rust struct definitions from JSON with serde support, Option types, and ... 🦀 JSON to Rust Struct Generator Free online JSON to Rust converter. Generate Rust struct definitions from JSON with serde support, Option types, and ... 🦀 JSON to Rust Struct Generator Free online JSON to Rust converter. Generate Rust struct definitions from JSON with serde support, Option types, and ... 🦀 JSON to Rust Struct Generator Free online JSON to Rust converter. Generate Rust struct definitions from JSON with serde support, Option types, and ... 🔧 ️ JSON to SQL Insert Generator Free online JSON to SQL converter. Convert JSON arrays or objects into INSERT statements for MySQL, PostgreSQL, SQLit... 🔧 ️ JSON to SQL Insert Generator Free online JSON to SQL converter. Convert JSON arrays or objects into INSERT statements for MySQL, PostgreSQL, SQLit... 🔧 ️ JSON to SQL Insert Generator Free online JSON to SQL converter. Convert JSON arrays or objects into INSERT statements for MySQL, PostgreSQL, SQLit... 🔧 ️ JSON to SQL Insert Generator Free online JSON to SQL converter. Convert JSON arrays or objects into INSERT statements for MySQL, PostgreSQL, SQLit... 🔧 JSON to Table Converter 免费在线JSON转表格工具，将JSON数据转换为美观的HTML表格，支持嵌套对象展开、数组列表渲染。纯前端本地处理，数据不上传服务器。 🔧 JSON to Table Converter 免费在线JSON转表格工具，将JSON数据转换为美观的HTML表格，支持嵌套对象展开、数组列表渲染。纯前端本地处理，数据不上传服务器。 🔧 JSON to Table Converter 免费在线JSON转表格工具，将JSON数据转换为美观的HTML表格，支持嵌套对象展开、数组列表渲染。纯前端本地处理，数据不上传服务器。 🔧 ️ JSON to SQL Insert Generator 免费在线JSON转表格工具，将JSON数据转换为美观的HTML表格，支持嵌套对象展开、数组列表渲染。纯前端本地处理，数据不上传服务器。 🔧 JSON to TOML Converter Free online JSON to TOML converter. Convert JSON format to TOML configuration format with real-time preview, syntax h... 🔧 JSON to TOML Converter Free online JSON to TOML converter. Convert JSON format to TOML configuration format with real-time preview, syntax h... 🔧 JSON to TOML Converter Free online JSON to TOML converter. Convert JSON format to TOML configuration format with real-time preview, syntax h... 🔧 JSON to TOML Converter Free online JSON to TOML converter. Convert JSON format to TOML configuration format with real-time preview, syntax h... 🔧 JSON to TypeScript Interface Generator Free online JSON to TypeScript interface generator. Convert JSON data to TypeScript type definitions with automatic t... 🔧 JSON to TypeScript Interface Generator Free online JSON to TypeScript interface generator. Convert JSON data to TypeScript type definitions with automatic t... 🔧 JSON to TypeScript Interface Generator Free online JSON to TypeScript interface generator. Convert JSON data to TypeScript type definitions with automatic t... 🔧 JSON to TypeScript Interface Generator Free online JSON to TypeScript interface generator. Convert JSON data to TypeScript type definitions with automatic t... 🔧 JSON to XML Converter Free online JSON to XML converter. Convert JSON data to XML format with one click. Supports nested objects, arrays, a... 🔧 JSON to XML Converter Free online JSON to XML converter. Convert JSON data to XML format with one click. Supports nested objects, arrays, a... 🔧 JSON to XML Converter Free online JSON to XML converter. Convert JSON data to XML format with one click. Supports nested objects, arrays, a... 🔧 JSON to XML Converter Free online JSON to XML converter. Convert JSON data to XML format with one click. Supports nested objects, arrays, a... 🔄 JSON to YAML Converter Free online JSON to YAML converter. Instantly transform JSON data into YAML format with customizable indentation. Pur... 🔄 JSON to YAML Converter Free online JSON to YAML converter. Instantly transform JSON data into YAML format with customizable indentation. Pur... 🔄 JSON to YAML Converter Free online JSON to YAML converter. Instantly transform JSON data into YAML format with customizable indentation. Pur... 🔄 JSON to YAML Converter Free online JSON to YAML converter. Instantly transform JSON data into YAML format with customizable indentation. Pur... 🔧 Online JSON Validator Free online JSON validator with real-time syntax error detection, line and column pinpointing, formatting and minific... 🔧 Online JSON Validator Free online JSON validator with real-time syntax error detection, line and column pinpointing, formatting and minific... 🔧 Online JSON Validator Free online JSON validator with real-time syntax error detection, line and column pinpointing, formatting and minific... 🔧 Online JSON Validator Free online JSON validator with real-time syntax error detection, line and column pinpointing, formatting and minific... 🔧 TOML to JSON Converter Free online TOML to JSON converter. Supports standard TOML syntax including tables, arrays, inline tables, multi-line... 🔧 TOML to JSON Converter Free online TOML to JSON converter. Supports standard TOML syntax including tables, arrays, inline tables, multi-line... 🔧 TOML to JSON Converter Free online TOML to JSON converter. Supports standard TOML syntax including tables, arrays, inline tables, multi-line... 🔧 TOML to JSON Converter Free online TOML to JSON converter. Supports standard TOML syntax including tables, arrays, inline tables, multi-line... 🔄 XML to JSON Converter Free online XML to JSON converter. Paste XML data and convert to formatted JSON instantly. Handles complex nested XML... 🔄 XML to JSON Converter Free online XML to JSON converter. Paste XML data and convert to formatted JSON instantly. Handles complex nested XML... 🔄 XML to JSON Converter Free online XML to JSON converter. Paste XML data and convert to formatted JSON instantly. Handles complex nested XML... 🔄 XML to JSON Converter Free online XML to JSON converter. Paste XML data and convert to formatted JSON instantly. Handles complex nested XML... 🔄 YAML to JSON Converter Free online YAML to JSON converter. Instantly transform YAML config/data into JSON format with customizable indentati...