Can it handle very large JSON files?

Yes, within your browser's memory limits — since parsing happens entirely client-side, extremely large files (tens of megabytes) may be slower depending on your device.

Does minifying change the actual data?

No — minifying only removes whitespace and line breaks; the underlying keys, values, and structure stay exactly the same, just more compact.

developerPopular Client-Side Only

JSON Formatter & Validator

Format, validate, beautify, and minify raw JSON payloads with instant error line pointers.

Indentation:

Raw Input JSON

Formatted Output

{
  "project": "Burnjet",
  "version": 1,
  "tools": [
    "seo",
    "finance",
    "developer"
  ],
  "active": true
}

Zero-Leakage Local Processing

All text formatting, JSON/JWT parsing, cryptographic hashing, and image compression execute entirely inside your browser. No private data is ever sent to Burnjet servers.

Quick Reference & Instructions

Simple steps, pro tips, and execution details

Paste or Enter Input

Paste your raw JSON, code snippet, tokens, or values into the input panel.

Select Options & Modes

Choose formatting options, indentation spaces, or target conversion standards.

Copy or Download Output

One-click copy to clipboard or download the formatted file ready for production.

How It Works

Parses JSON client-side, highlights exact syntax error line and column numbers, and formats with custom spacing.

Frequently Asked Questions

Common questions about calculations, assumptions, and edge cases.

The formatter points to the exact line and column where parsing failed, rather than just saying the document is invalid, so you can jump straight to the problem.