data_object

JSON Formatter & Validator

Format, validate, and minify JSON instantly — with syntax highlighting and error detection.

edit_note Input JSON
data_object — Status
key 0 Keys
account_tree 0 Max Depth
straighten 0 B Size
code Output
Formatted JSON will appear here…

How to Use

  1. 1
    Paste your JSON

    Enter or paste any JSON data into the input area — API responses, config files, or data exports.

  2. 2
    Choose format or minify

    Click Format for readable output with indentation, or Minify to remove all whitespace.

  3. 3
    Review validation results

    The tool instantly validates your JSON and shows error position if something is wrong.

  4. 4
    Copy the result

    Click Copy to grab the formatted or minified JSON for use in your project.

Common Use Cases

api

API Development

Format API responses to inspect data structure, debug endpoints, and validate payloads before sending.

settings

Config Files

Clean up and validate JSON configuration files for package.json, tsconfig.json, and app settings.

bug_report

Debugging

Prettify minified JSON from logs or network requests to quickly find the data you need.

database

Data Analysis

Format exported JSON datasets to understand structure, count keys, and check nesting depth.

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Frequently Asked Questions

How does the JSON formatter work?

Paste your JSON and it's instantly formatted with syntax highlighting. Everything runs in your browser — nothing is sent to any server.

Can it fix invalid JSON?

The tool validates your JSON and shows exactly where the error is (line and character position), but it cannot auto-fix structural errors like missing brackets or quotes.

What's the difference between format and minify?

Format adds indentation and line breaks for readability. Minify removes all whitespace to produce the smallest possible output — useful for APIs and config files.

Is there a size limit?

No hard limit, but very large files (10MB+) may slow down your browser since processing happens client-side.

Does it support JSON with comments?

Standard JSON does not allow comments. If your JSON contains comments (// or /* */), they will cause a validation error. Remove them first or use a JSON5 parser.

Is my data safe?

Yes. Everything runs locally in your browser. Your JSON data never leaves your device.