✦20 tools · 100% free

20+ Free JSON Tools Online

Free online json tools. Convert, transform, and process your data instantly in your browser. No uploads, private and fast.

JSON Minifier
Minify JSON by removing all whitespace — perfect for production payloads
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JSON Viewer
Explore JSON data with an interactive collapsible tree view
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JSON Diff
Compare two JSON objects side-by-side and highlight all differences
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JSON Escape
Escape JSON to an embeddable string or unescape a stringified JSON
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JWT Decoder
Decode JWT tokens to inspect header, payload, and signature
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JSONPath
Query JSON data using JSONPath expressions — extract nested values instantly
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JSON Validator
Validate JSON syntax instantly — find errors with line and column numbers
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JSON Beautifier
Beautify messy JSON with customizable indentation (2, 4, or 8 spaces)
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JSON Stringify
Convert JSON to an escaped string representation — ready for embedding in code
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JSON → TypeScript
Generate TypeScript interfaces from JSON data instantly
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JSON → Pydantic
Generate Pydantic BaseModel classes from JSON data
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JSON → Zod
Generate Zod schema validators from JSON data
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JSON → Go
Generate Go structs from JSON data with proper tags
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JSON → C#
Generate C# classes with properties from JSON data
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JSON → Kotlin
Generate Kotlin data classes from JSON data
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JSON → Java
Generate Java POJO classes from JSON data
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JSON → Dart
Generate Dart model classes with fromJson/toJson from JSON data
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JSON → Rust
Generate Rust structs with serde from JSON data
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JSON → Swift
Generate Swift Codable structs from JSON data
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JSON → PHP
Generate PHP class with typed properties from JSON data
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