MV Tools

Text tool

Online JSON Formatter and Validator

Format, validate, minify, sort keys, escape, unescape, and query JSON directly in your browser.

0 characters

Debug the smallest branch that reproduces the issue

Formatting helps reveal structure; validation confirms parseable JSON, not an application schema or business rule.

  • Format first, then validate after each material edit.
  • Use simple paths such as $.items[0].id. Only dot properties and numeric array indexes are supported.
  • Minify or copy only a safe, reduced reproduction after you have checked the branch you need.

JSON Toolkit runs locally in your browser and accepts up to 2 MB. Formatting, validation, key sorting, escaping, and simple path queries do not upload your text to MV Tools.

How to Debug JSON with Formatting, Validation, and JSONPath

Review structured data before reuse

Before you start

  • Keep a small original sample and decide the required delimiter, schema, or output format.
  • Remove credentials and personal data that are not needed for the conversion.

Check the result

  • Parse the output again and compare headers, empty fields, dates, decimal values, and leading zeroes.
  • Use a representative record in the destination system before importing a full file.

Know the limit: A valid format can still contain wrong business values; conversion cannot infer your intended schema or meaning.

Tool details

Online JSON Formatter, Validator, and Minifier

Format, validate, minify, sort keys, escape, unescape, and query JSON locally for API responses, configuration files, and debugging.

Reviewed by MV Tools Editorial Team

What This Tool Does

This browser-based JSON toolkit turns compact JSON into readable output, validates syntax, minifies JSON, sorts object keys, escapes and unescapes JSON strings, and queries values with simple paths.

Common Use Cases

  • Formatting and validating JSON responses from APIs
  • Minifying JSON before copying it into configs, scripts, or test data
  • Sorting object keys, escaping JSON strings, and locating fields with path queries

How Data Is Handled

JSON processing runs in your browser. Your JSON text is not uploaded to the backend.

FAQ

Does this validate JSON syntax?

Yes. Invalid JSON produces a clear error instead of formatted output.

Does it support JSONPath?

It supports simple paths that start with $ for accessing object fields and array indexes.

Is my JSON sent to the server?

No. Formatting, validation, minifying, escaping, and querying run locally in the browser.