The ability to combine multiple CSV documents programmatically is valuable for projects where datasets originate from different sources, such as APIs or batch exports from enterprise tools. Instead of manually consolidating this data, you can automate the workflow and supercharge efficiency. This article explains how to utilize the Node.js REST API to automatically merge CSV files in Node.js apps, without complex server-side setups. Let’s dive straight in!

Steps to Merge CSV Files Using Node.js

1. Import and set up GroupDocs.Merger Cloud Node.js SDK
2. Obtain API credentials and initialize the DocumentApi with them
3. Configure the source CSV files to merge from the cloud storage
4. Define the CSV merging options with JoinOptions
5. Create an CSV file joining request using JoinRequest
6. Process the request to merge two CSV files using the join() method

By following these steps, developers can join CSV documents in Node.js and avoid building a custom parser or dealing with low-level file handling. When you use the Cloud REST API, you are not just combining CSVs—you are optimizing your workflow. It works in diverse environments, whether your Node.js app runs on Linux, Windows, or in a serverless setup. There are no local dependencies, and all heavy lifting is performed in the cloud, eliminating the need to install additional libraries or deal with platform compatibility issues.

Code to Merge CSV Files Using Node.js

For developers building Node.js apps for merging CSV files seamlessly, the GroupDocs.Merger Cloud Node.js SDK provides a robust and easy-to-integrate solution. It helps you combine multiple CSV files into one without manually managing formatting. Automating the process with the Node.js REST API improves workflow efficiency and guarantees data consistency. Unlike various other libraries, our REST API is a developer-focused solution for taking your cross-platform document processing apps to the next level.

If you are interested in similar functionality for other file formats, see our guide on Merging TXT Files using the Node.js REST API.