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JSON & data

View & format

JSON Viewer JSON Sort JSON Escaper JSON Editor

Transform

JSON Flatten JSON Patch

JSON Merge Patch

Validate & query

JSON Schema Validator JSON Schema Generator

JSONPath Tester JSON Size Analyzer JSON Linter JMESPath Tester

Convert

JSON to YAML JSON to TOML JSON to SQL JSON to .env JSON to PHP Array JS Object to JSON MessagePack Converter JSON to TOON JSON to CSV, YAML, XML & More

Generate code

JSON to TypeScript

JSON to Java, Kotlin and C#JSON to PHP Classes

JSON to Protobuf ObjGen

Encode & convert

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Security

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Calculators & reference

English

Changelog Attributions

© 2026 Daniel Chen

PrismKit

JSON

JSON to CSV

JSON to CSV

Runs in your browserLocal

Flatten an array of JSON objects into CSV, working out the column headers for you.

JMESPath Tester

Run JMESPath queries against JSON and see the result live.

JSON to XML

Convert JSON to XML with attributes, text nodes, and repeated elements for arrays.