# JSON

JSON Developer Tools

Free browser-based json developer tools. 61 tools — no installs, no sign-ups, open and use instantly.

61 tools available
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Course Schema Builder
Course Schema Builder for faster developer workflows
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Event Schema Builder
Event Schema Builder for faster developer workflows
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Job Posting Schema Builder
Job Posting Schema Builder for faster developer workflows
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JSON Patch Builder
JSON Patch Builder for faster developer workflows
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JSON Size Estimator
JSON Size Estimator for faster developer workflows
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JSON to GraphQL Type
Convert JSON objects into GraphQL type definitions instantly
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JSON to Rust Struct
JSON to Rust Struct for faster developer workflows
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JSON to Swift Struct
Convert JSON to Swift Codable structs instantly
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JSON to Zod Schema
Convert JSON samples into Zod validation schemas for TypeScript
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JSON Type Analyzer
JSON Type Analyzer for faster developer workflows
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Person Schema Builder
Person Schema Builder for faster developer workflows
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Recipe Schema Builder
Recipe Schema Builder for faster developer workflows
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Review Schema Builder
Review Schema Builder for faster developer workflows
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JSON to SQL Generator
Infer schema and generate DDL + DML from JSON
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JWT Inspector
Parse header, payload, and signature of any jwt
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Data Type Detector
Analyze a column and infer its data type automatically
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Graph Data Visualizer
Paste data → render charts instantly
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HTML Table to JSON
Paste html table → get structured json instantly
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JSON Schema Generator
Infer draft-07 schema from any json sample
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JSON to HTML Table
Render json arrays as formatted html tables
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JSON to TOML
Translate json objects into toml config syntax
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TOML to JSON
Parse toml and export structured json output
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INI to JSON Converter
parse ini sections and keys into structured json
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JSON Diff Tool
highlight added, removed, and changed keys between two JSONs
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JSON to INI
translate json objects into ini file syntax
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NDJSON to JSON Array
wrap newline-delimited json into a standard array
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JSON Escape / Unescape
Escape and unescape JSON strings safely
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JSON Key Sorter
Sort JSON keys alphabetically
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JSON Flattener
Flatten nested JSON structures
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JSON Unflattener
Rebuild nested JSON from flat keys
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JSON Key Renamer
Rename JSON keys in bulk
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JSON Value Search
Search keys and values inside JSON
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JSON Duplicate Key Detector
Detect duplicate keys in raw JSON
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JSON Array Filter
Filter JSON arrays by rules
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JSON Array Sorter
Sort JSON arrays by field
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JSON Merge Tool
Merge two JSON documents
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JSON Splitter
Split large JSON into smaller chunks
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JSON Lines Formatter
Format NDJSON and JSONL files
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JSON Lines to JSON
Convert JSONL to JSON array
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JSON to PHP Array
Convert JSON into PHP array syntax
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JSON to Python Dict
Convert JSON into Python dict syntax
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JSON to Java Class
Generate Java classes from JSON
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JSON to C# Class
Generate C# models from JSON
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JSON to Go Struct
Generate Go structs from JSON
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JSON to Kotlin Data Class
Generate Kotlin data classes from JSON
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OpenAPI Snippet Generator
Generate API request snippets from endpoint data
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JSON Faker Template Builder
Build fake data templates
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JSON Formatter
Format & validate JSON instantly
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JS Minifier
Minify JS to one line
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JS Beautifier
Format and beautify JS code
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JS Obfuscator
JS Obfuscator — free browser-based tool
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JSON Minifier
Minify JSON to one line
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JSON to CSV
JSON to CSV — free browser-based tool
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CSV to JSON
CSV to JSON — free browser-based tool
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JSON to TypeScript
JSON to TypeScript — free browser-based tool
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JSON Diff
Diff two JSON objects and highlight changes
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JSON Path Tester
Test JSONPath expressions on live data
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JSON Schema Validator
Validate JSON against a schema
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JS Console Simulator
Run JavaScript snippets in a mini console
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npm Package Size Checker
Check npm package bundle size online
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TypeScript Playground
Compile TypeScript to JavaScript online