JSON (JavaScript Object Notation) is widely used to transmit data across web and mobile platforms. However, when working with databases, spreadsheets, or analytics platforms, data is often expected in a flat CSV (Comma-Separated Values) format. With the GroupDocs.Conversion Cloud SDK for Node.js, converting JSON to CSV is quick, accurate, and fully cloud-based.

Node.js API for JSON to CSV Conversion

GroupDocs.Conversion Cloud SDK for Node.js is a REST-based SDK that simplifies file format transformations. It supports over 50 document and data types, including JSON, CSV, DOCX, PDF, and more.

Key Benefits:

  • Converts JSON to flat CSV structure.
  • Retains headers, field mappings, and values.
  • No software installation required.
  • Easy-to-use SDK or RESTful cURL commands.
  • Secure OAuth 2.0 authentication.

Install the API

npm install groupdocs-conversion-cloud --save

Create a free account and get your Client ID and Client Secret from the GroupDocs Cloud dashboard.

Convert JSON to CSV in Node.js

This section explains the details on how we can transform JSON file to CSV format using Node.js code snippet.

Step 1: Import & Configure API

const { Configuration, ConvertApi, FileApi, UploadFileRequest, ConvertSettings, ConvertDocumentRequest } = require("groupdocs-conversion-cloud");
const config = new Configuration("YOUR_CLIENT_ID", "YOUR_CLIENT_SECRET");
const convertApi = new ConvertApi(config);
const fileApi = new FileApi(config);

Step 2: Upload the JSON File to Cloud

const fs = require("fs");
const uploadRequest = new UploadFileRequest("source.json", fs.createReadStream("source.json"));
await fileApi.uploadFile(uploadRequest);

Step 3: Convert JSON to CSV Format

const settings = new ConvertSettings();
settings.filePath = "input.json";
settings.format = "csv";
settings.outputPath = "converted/output.csv";

const request = new ConvertDocumentRequest(settings);
await convertApi.convertDocument(request);
console.log("JSON to CSV conversion completed successfully.");
json to csv

Image:- A preview of JSON to CSV conversion.

The sample files used in the above example can be downloaded from:

Convert JSON to CSV via cURL Command

Prefer using the command line or shell scripts? You can also use GroupDocs.Conversion Cloud via cURL for platform-independent automation.

Step 1 – Get Access Token:

curl -v "https://api.groupdocs.cloud/connect/token" \
-X POST \
-d "grant_type=client_credentials&client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET" \
-H "Content-Type: application/x-www-form-urlencoded"

Step 2 – Convert JSON to CSV using API: Once a JWT token has been obtained, please use this cURL command to convert a JSON to CSV format:

curl -v "https://api.groupdocs.cloud/v2.0/conversion" \
-X POST \
-H "accept: application/json" \
-H "authorization: Bearer {JWT_TOKEN}" \
-H "Content-Type: application/json" \
-d "{  \"StorageName\": \"internal\",  \"FilePath\": \"{inputFile}\",  \"Format\": \"csv\",  \"resultantPath\": \"{myResultant}\"}"

Replace inputFile with the name of input JSON file, resultantPath with the name of resultant CSV and JWT_TOKEN with a personalized JWT access token generated in step 1.

Try Free JSON to CSV Converter Online

You can also explore the power of this API through our Online JSON to CSV Converter. This tool showcases the REST API in action and requires no installation or coding.

json to csv converter

Developer Resources

✅ Conclusion

Using GroupDocs.Conversion Cloud SDK for Node.js, converting JSON to CSV becomes simple, fast, and highly reliable. Whether you’re building data processing tools, dashboards, or integration pipelines, this API enables you to transform structured data into tabular formats with ease.

Automate JSON to CSV conversion in your Node.js apps and enhance your data workflows today!

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