JSON Viewer & Formatter

Paste your JSON to format, validate, and visualize it in a structured way — perfect for debugging APIs.

What is a JSON Viewer?

A JSON Viewer is a tool that helps developers read and understand JSON (JavaScript Object Notation)by formatting it into a clean and readable structure. It highlights syntax, collapses nested objects, and validates JSON instantly.

Why Use a JSON Formatter?

  • To debug API responses
  • To visualize deeply nested objects
  • To pretty-print minimized or messy JSON
  • To identify syntax errors in JSON
  • To convert raw JSON into readable structured format

Common Use Cases

  • Inspecting REST API responses
  • Working with database exports
  • Debugging large config files
  • Validating JSON before sending to backend services

Features of UtilityFlux JSON Viewer

  • Pretty-print JSON with indentation
  • Collapse and expand nodes
  • Syntax highlighting
  • Instant validation error detection
  • Runs entirely in your browser — 100% privacy

What is JSON?

JSON is a lightweight data interchange format used by APIs, web applications, mobile apps, and databases. It is easy for humans to read and easy for machines to parse, making it the standard for structured data exchange.