# JSON Inspection, Diff, and Transformation Tools

Compare JSON formatting, diffing, path inspection, schema validation, merging, transformation, and export tools in one hub for API and data workflows.

> Canonical page: https://elysiatools.com/en/hubs/json-utility

- **Category:** utility

- **Keywords:** json formatter, json diff, json path, json schema validation, json merge, json transform, json inspector, api payload review

## Overview

This hub focuses on the everyday work around JSON payloads: making data readable, checking differences, exploring nested paths, validating schemas, transforming structures, and packaging JSON for downstream systems or reviews.

## Tools

- JSON Formatter: Format and validate JSON data
- Pretty JSON Diff: Compare two JSON objects and display their differences in a readable format
- JSON Path Visualizer: Visualize JSON or JSONL as an expandable tree and copy JSONPath expressions for every node
- JSON Visualizer: Visualize and edit JSON data with interactive forms and real-time updates
- JSON File Merger: Merge multiple JSON files with various merging strategies (deep merge, overwrite, combine arrays, etc.)
- JSONata Query & Transform Studio: Preview JSONata-style queries and transformations, compare results across sample payloads, and export the transformed output as JSON, CSV, YAML, or Markdown
- JSON Schema Validator: Validate JSON against schema
- Structured Log Analyzer: Detect common log formats, extract core fields, infer field types, and export parsed logs as JSON, CSV, or SQL inserts
- CSV/JSON Data Watermarker: Inject visible or signature-style watermark fields into CSV or JSON exports so shared datasets can be traced later
- API Response Contract Validator: Validate a real API response JSON against the response schema declared in an OpenAPI 3.x specification

## Samples

- JSON Samples: JSON (JavaScript Object Notation) format examples from simple to complex structures
- Terraform Plan JSON Samples: Sample Terraform plan JSON files exported from terraform show -json style payloads for dependency visualization and change review
- JWT Samples: Comprehensive JWT examples from basic token structure to advanced security implementations

## Frequently asked questions

### What can I do in this hub?

You can format JSON, compare versions, inspect nested paths, validate schemas, merge files, transform payloads, analyze structured logs, and prepare JSON for sharing or downstream use.

### Who is this hub for?

It is useful for developers, data engineers, QA teams, API integrators, and anyone working with JSON responses, configs, or exported data.

### How should I start?

Start with formatting or visualization, then move to diffing, schema checks, transformations, or export-oriented tools depending on what you are trying to verify or produce.

## Related content

- [JSON Formatting, Diff, and Normalization Tools](https://elysiatools.com/en/hubs/json-format): Compare JSON formatting, diffing, log review, config comparison, and data-normalization tools in one hub for readable and reviewable JSON workflows.
- [JSON Schema and API Contract Validation Tools](https://elysiatools.com/en/hubs/json-validate): Compare JSON schema validation, OpenAPI response checks, mutation testing, stress testing, and breaking-change detection tools in one hub for API contract review.
- [CSV Cleanup and Table Reshaping Tools](https://elysiatools.com/en/hubs/csv-utility): Compare CSV cleanup, filtering, sorting, grouping, merging, splitting, and table reshaping tools in one hub for spreadsheet and import/export workflows.
- [Text Extraction Tools](https://elysiatools.com/en/hubs/text-extract): Explore 15 tools for extracting links, emails, phone numbers, dates, emojis, HTML attributes, and other structured signals from mixed text.