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JSON Viewer

Paste JSON to instantly format, validate, and explore with an interactive tree view

Paste or drop JSON to begin
Input
Drop .json file here
Tree View
Your formatted JSON will appear here

How to use the JSON Viewer

1

Paste or drop your JSON

Paste raw JSON into the input panel, or drag and drop a .json file directly onto it.

2

Explore the tree

Click the ▶ arrows to expand or collapse nested objects and arrays. Use search to highlight keys.

3

Beautify or minify

Use Beautify to pretty-print with indentation, or Minify to strip all whitespace for compact output.

What Is a JSON Viewer?

JSON (JavaScript Object Notation) is the standard data format used by virtually every web API, configuration file, and modern database. Raw JSON is often written as a single compact line with no indentation, making it nearly impossible to read by eye. A JSON viewer parses this raw text and presents it in a structured, colour-coded, collapsible tree that lets you instantly navigate complex data structures.

EazyStudio's JSON viewer also validates your JSON as you type, catching syntax errors like missing commas, unmatched brackets, or incorrect quotes. It runs entirely in your browser — no server calls, no data transmission, completely private.

How to Use the JSON Viewer

  1. Paste or type your JSON — paste raw JSON text into the input panel on the left, or drag and drop a .json file directly onto the page.
  2. View the tree — the right panel instantly renders your data as a collapsible, colour-coded tree. Objects, arrays, strings, numbers, booleans, and null values are all displayed in distinct colours for easy scanning.
  3. Search keys — use the search box to highlight any key name throughout the tree. Matching keys are highlighted in red and their parent nodes are automatically expanded.
  4. Beautify or minify — use the format buttons to pretty-print your JSON with proper indentation, or collapse it to a single compact line for use in code.
  5. Copy the result — click the copy button to put the formatted or minified JSON on your clipboard.

Why Validate JSON?

A single misplaced comma or forgotten quote mark breaks the entire JSON document and causes API calls to fail with cryptic parse errors. Manually hunting through hundreds of lines of minified JSON for a syntax error is tedious and error-prone. The JSON validator in this tool highlights the exact line and character position of any syntax error, so you can fix it in seconds instead of minutes.

Frequently Asked Questions

Is my JSON data sent to a server?

No. All processing happens entirely in your browser using JavaScript. Your JSON data never leaves your machine. This makes it safe to paste sensitive API responses or config files.

What is the difference between beautify and minify?

Beautify (or pretty-print) adds indentation and line breaks to make JSON human-readable. Minify removes all unnecessary whitespace to produce the smallest possible version, which is useful when sending JSON over a network or embedding it in code.

Can I view very large JSON files?

Yes, the tool handles large JSON documents well. For very large files (several megabytes), the tree rendering may take a moment, but all processing still happens locally in your browser with no size limits imposed by a server.

What JSON syntax errors does the validator catch?

The validator catches all standard JSON syntax errors including: trailing commas after the last item in an array or object, missing or mismatched quotes around strings, unescaped special characters, invalid number formats, and mismatched brackets or braces.

JSON Viewer, Formatter & Validator — All in One

Working with raw JSON can be painful — a missing comma, a mismatched bracket, or deeply nested data can be nearly impossible to spot in a wall of unformatted text. EazyStudio's JSON Viewer solves this with instant formatting, collapsible tree view, and error detection with line numbers.

Paste your JSON, and in milliseconds you get: colour-coded syntax highlighting, collapsible nodes for navigating large structures, a validation status badge, and stats on keys, values, and nesting depth.

How to Use the JSON Viewer

  1. Paste or type your JSON into the left panel, or drag and drop a .json file.
  2. The tool validates automatically — green means valid, red shows the exact error location.
  3. Click Format to beautify the JSON with correct indentation.
  4. Use the collapsible tree view to expand or collapse objects and arrays for easier navigation.
  5. Click Minify to produce a compact, single-line version for use in API calls or config files.
  6. Copy the output or use the search bar to find specific keys.

Frequently Asked Questions

JSON (JavaScript Object Notation) is a lightweight text format for storing and exchanging data. It's the standard format for REST APIs, configuration files, databases like MongoDB, and data storage. Virtually every programming language can parse and generate JSON.
Common causes include: trailing commas after the last item in an object or array, single quotes instead of double quotes around strings, unescaped special characters (like \n or " inside a string), and missing commas between items. The error message shown by the tool will include the line number to help you locate the issue.
Yes. The tree view collapses large objects and arrays so you can navigate complex structures without scrolling through thousands of lines. Drag and drop a .json file directly onto the input panel to load large files quickly.
No. All processing happens entirely in your browser using JavaScript. Your JSON data never leaves your device — there are no server calls when formatting, validating, or viewing your data.

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