Can it handle nested JSON objects or arrays?

Deeply nested values are flattened or stringified into a single cell, since CSV is inherently a flat, two-dimensional format -- for deeply nested data, consider restructuring it first for a cleaner spreadsheet.

Is my data uploaded anywhere?

No -- the conversion runs entirely in your browser; your JSON never leaves your device.

developer Client-Side Only

JSON to CSV Converter

Convert structured JSON arrays of objects into clean, downloadable CSV tabular format.

Input JSON (Array of Objects)

CSV Output

id,name,role,city
"1","Alice","Engineer","San Francisco"
"2","Bob","Designer","New York"
"3","Charlie","Architect","London"

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

Extracts unique keys as headers and maps object values into escaped CSV rows locally.

Frequently Asked Questions

Common questions about calculations, assumptions, and edge cases.

The converter collects the union of all keys found across every object as CSV column headers, leaving a cell blank for any object missing that particular key.

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