Frequently Asked Questions (FAQ)

What is JSON Support?

JSON Support is a free online tool that converts JSON (JavaScript Object Notation) data into Excel spreadsheet files (.xlsx format). It's designed to make data conversion fast, easy, and secure.

Is JSON Support really free?

Yes! JSON Support is 100% free to use with no hidden fees, no registration required, and no limitations on the number of conversions you can perform.

Do I need to create an account?

No account is necessary. Simply visit the website and start converting your JSON files immediately.

How do I convert JSON to Excel?

There are two ways:

1. Upload a file: Drag and drop your .json file onto the upload area, or click to browse
2. Paste JSON: Click the "Paste JSON" tab and paste your JSON data directly

Click "Convert to Excel" and your file will download automatically!

What JSON format is supported?

We support standard JSON arrays of objects. For example:

[
  {"name": "Alice", "age": 30},
  {"name": "Bob", "age": 25}
]

Each object in the array becomes a row in Excel, and the keys become column headers.

What if my JSON is not an array?

If you paste or upload a single JSON object (not wrapped in an array), we'll automatically wrap it for you so it converts properly.

Is there a file size limit?

Yes — the converter accepts payloads up to about 4MB, which keeps conversions fast and comfortably under the underlying API's hard limit. That's typically tens of thousands of rows depending on how many fields each record has. If your file is larger, try splitting it into smaller files or removing unused fields.

Is my data safe?

Absolutely! Your data is:

• Encrypted during transmission (HTTPS)
• Processed in real-time and never stored
• Never seen by anyone else
• Immediately discarded after conversion

Do you store my uploaded files?

No. We do not store, save, or retain any of your uploaded files or converted data. Everything is processed in memory and discarded immediately.

Can I use this for sensitive data?

Yes. Since we don't store your data and everything is processed securely via HTTPS, it's safe for sensitive information. However, always follow your organization's data handling policies.

What browsers are supported?

JSON Support works on all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. We recommend using the latest version for best performance.

Can I use this on mobile devices?

Yes! Our website is fully responsive and works on smartphones and tablets.

Does it work offline?

No, you need an internet connection to use JSON Support because the conversion happens on our servers.

What technology powers JSON Support?

We use:

• AWS Lambda for serverless backend processing
• ExcelJS library for Excel file generation
• Modern HTML5/JavaScript for the frontend
• Vercel for hosting and global CDN

What Excel format is generated?

We generate .xlsx files (Excel 2007 and later) which are compatible with Microsoft Excel, Google Sheets, LibreOffice Calc, and other spreadsheet applications.

Can I customize the Excel formatting?

Currently, we provide a clean, professional format with styled headers. Custom formatting options are coming in a future update!

What if my JSON has nested objects?

Nested objects will be converted to their JSON string representation in the Excel cell. For complex nested structures, you may need to flatten your JSON first.

My conversion failed. What should I do?

Common issues and solutions:

• Invalid JSON: Make sure your JSON is valid. Use a JSON validator if needed.
• Empty data: Ensure your JSON array contains at least one object.
• Browser issues: Try refreshing the page or using a different browser.
• File too large: Try splitting large files into smaller chunks.

The Excel file didn't download. What happened?

Check if your browser blocked the download (check the address bar for download icons). Some browsers require you to allow downloads from our site.

I'm getting an error message. What does it mean?

Common error messages:

• "Invalid JSON format": Your JSON syntax is incorrect
• "Data must be a non-empty array": Your JSON needs to be an array of objects
• "Conversion failed": Try again or contact us if the problem persists

Will you add more features?

Yes! We're working on:

• Multiple sheet support
• Custom column formatting
• Excel to JSON (reverse conversion)
• API access for developers
• Batch processing

Can I suggest a feature?

Absolutely! We love hearing from our users. Contact us through the website with your ideas.