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JSON Tools That Don't Leak Your Data

19 powerful JSON tools. 100% client-side. Your data never leaves your browser. Zero server requests. Verify in DevTools.

Client-Side OnlyOpen SourceNo TrackingNo Ads

Featured Tool

AI JSON Fixer

Auto-repair broken JSON from ChatGPT, Claude, and Gemini. Fixes trailing commas, single quotes, Python booleans, strips comments and markdown wrappers, extracts JSON from prose.

Core Tools

Essential JSON formatting and validation

JSON Formatter & Beautifier

Pretty-print JSON with syntax highlighting

JSON Validator

Validate JSON with precise error locations

JSON Minifier

Compress JSON to a single line

JSON Tree Viewer

Interactive tree view with search

AI Repair

Automatically fix broken JSON from AI outputs

AI JSON Fixer

Auto-repair broken JSON from AI outputs

Conversions

Convert JSON to and from other formats

JSON to CSV Converter

Convert JSON arrays to CSV format

JSON to YAML Converter

Convert JSON to YAML format

JSON to XML Converter

Convert JSON to XML format

JSON to TypeScript

Generate TypeScript interfaces from JSON

JSON to Zod Schema

Generate Zod schemas from JSON

JSON to Go Struct

Generate Go structs from JSON

JSON to Python Dataclass

Generate Python dataclasses from JSON

CSV to JSON Converter

Convert CSV data to JSON arrays

YAML to JSON Converter

Convert YAML to JSON format

Utilities

Advanced JSON utilities and analysis

JSON Diff & Compare

Compare two JSON documents structurally

JSONPath Query Tool

Query JSON with JSONPath expressions

JSON Schema Generator

Generate JSON Schema from example data

JSON to URL Parameters

Convert JSON to URL query strings

URL Parameters to JSON

Convert URL query strings to JSON

Your Privacy Matters

Every tool on JSONShield processes data entirely in your browser using JavaScript. We never send your data to any server. No cookies, no tracking, no analytics on your JSON data. Open source and verifiable.