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JSON to CSV Online Converter

Online converter that turns JSON data into CSV files and supports nested objects and arrays.

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JSON input

Please enter the JSON data to be converted.

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Conversion options

Include header rowWrap values with quotes

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CSV output

Converted CSV data

Technical Description

YYTools JSON to CSV converter uses a high-performance streaming parsing engine that precisely handles complex nested JSON structures. Whether it's a simple array of objects or complex JSON reports with deep nesting relationships, our algorithm can map them to two-dimensional table rows through "automatic flattening" technology. This tool runs entirely in your browser (client-side JS), ensuring the privacy and security of sensitive data without uploading to any server.

Use Cases

Ideal for developers exporting API responses to spreadsheets, data analysts converting NoSQL database exports, business users transforming webhook data for reporting, and anyone migrating data between JSON-based systems and spreadsheet applications. Perfect for preparing data for Excel, Google Sheets, or database imports.

User Guide

1
Paste or UploadPaste JSON code directly into the editor, or click to upload a .json file.
2
Structure PreviewThe system automatically parses and displays a real-time preview of the converted table for header verification.
3
Custom OptionsSupport setting delimiters (comma, semicolon) and whether to preserve original nested paths.
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One-Click DownloadClick "Download CSV" to get a standard .csv file compatible with Excel or Google Sheets.

Frequently Asked Questions

Can nested JSON objects be converted?

Yes. Our tool automatically converts nested paths into column headers (e.g., user.address.city), ensuring lossless data presentation.

Is there a data size limit for conversion?

This tool supports processing megabytes of JSON data. Since processing happens locally in your browser, speed mainly depends on your computer's performance.

Will my data be stored in the cloud?

Absolutely not. YYTools guarantees that all conversion processes are completed locally in your browser. Your data never leaves your device, ensuring security and compliance.