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👑 Delimiters Pro Flagship Instant API Flattener • Zero Cloud Retention

JSON to CSV & Excel

Transform raw JSON payloads, REST API responses, and nested object arrays into spreadsheet-ready CSV and Microsoft Excel (.xlsx) files.

JSON Input • Paste JSON or upload file
Upload .JSON File

Drag and drop file here

Delimiter:
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Deep Object Flattening

Automatically traverses nested arrays and JSON objects, flattening child keys into dot-notation columns (user.contact.phone) without losing structure.

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Native Excel Workbooks

Generates authentic Microsoft Excel (.xlsx) binary spreadsheets with typed numeric cells, headers, and zero formatting corruption.

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100% Client-Side Privacy

Confidential customer records, CRM exports, and proprietary API keys stay entirely in your browser. No data is ever transmitted to an external server.

How to Convert JSON Data to CSV & Excel

Modern web APIs, databases, and microservices exchange information in JSON format. However, business stakeholders, financial analysts, and marketing teams require spreadsheets to perform pivot tables, VLOOKUPs, and executive reporting. Delimiters JSON to CSV Converter handles arrays of objects, single objects, and irregular datasets seamlessly in seconds.

Frequently Asked Questions

What JSON formats are supported?

You can provide an array of objects ([{"name": "Alice"}, {"name": "Bob"}]) or a single object. If an API returns a wrapper ({"data": [...]}), Delimiters automatically inspects and extracts the primary data array.

How does nested object flattening work?

When the flatten option is enabled, nested objects like {"user": {"profile": {"city": "New York"}}} are transformed into a single column named user.profile.city.

Is there a row or file size limit?

Because parsing executes directly within your browser's V8 engine, Delimiters can easily process tens of thousands of rows without hitting artificial cloud timeouts.