Developer · JSON Toolkit
Debug APIs, clean content, format data, and run release checks directly in your browser.
A full pipeline for JSON data: format and validate, diff two payloads, flatten or unflatten nested keys, extract values by path, validate against JSON Schema, and convert between CSV, FormData, TypeScript, and XML.
Filter by Focus
JSON Formatter
Format, validate, auto-fix & inspect JSON paths
JSON & Data
URL Parser
Parse, clean, and export URL parts
JSON & Data
XML Formatter
Format and minify XML online
JSON & Data
JSON to TypeScript
Generate TypeScript interfaces from JSON
JSON & Data
JSON Minifier
Minify JSON and reduce payload size
JSON & Data
JSON Diff
Compare two JSON objects with path-level changes
JSON & Data
Query String Parser
Convert query strings and JSON objects both ways
JSON & Data
JSON Key Extractor
Extract key paths from JSON
JSON & Data
JSON Sorter
Sort JSON keys recursively
JSON & Data
JSON Flatten / Unflatten
Convert nested JSON to flat key paths
JSON & Data
JSON Path Extractor
Extract JSON values with path expressions
JSON & Data
XPath Tester
Run XPath queries on XML or HTML
JSON & Data
CSV Column Extractor
Extract selected columns from CSV data
JSON & Data
JSON FormData Converter
Convert nested JSON to FormData fields
JSON & Data
JSON Line Counter
Count JSONL records and detect invalid rows quickly
JSON & Data
JSON Schema Generator
Infer Draft 2020-12 or Draft 7 schemas from sample JSON values
JSON & Data
JSON Escape & Unescape
Escape raw text as a JSON string or decode strict and nested JSON string literals
JSON & Data
JSON to Go Struct
Infer nested Go structs, JSON tags, slices, pointers, and optional fields from samples
JSON & Data
JSON to Java Class
Generate Java records or POJO classes with nested models and optional Jackson annotations
JSON & Data
JSON to Rust Struct
Generate nested Rust structs with Serde derives, rename attributes, Vec, and Option fields
JSON & Data
JSON to Kotlin Data Class
Generate nested Kotlin data classes with nullable defaults and kotlinx or Jackson annotations
JSON & Data
JSON to C# Class Generator
Infer C# records or classes with nested models, nullable types, and JSON serializer attributes
JSON & Data