CSV to XLSX using JavaScript

The JavaScript library for converting Csv documents to Excel files.

The JS module for converting comma-separated values CSV file to Excel XLSX file.

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ConvertAPI JavaScript library install

ConvertAPI provides a JavaScript module that allows you to perform a CSV to XLSX conversion with just a few lines of code. First, install the convertapi-js@~1.1 package from npm:

        NPM package >
    
npm i convertapi-js@~1.1

JavaScript Client GitHub

If you are interested in our old version of non-module JavaScript library you can find it here.

Authenticate your JavaScript library

Next, obtain your secret key by signing up for a free account. Once you sign up, you'll receive 250 free conversions instantly! Grab your authentication secret from the account dashboard, and authenticate the ConvertAPI JavaScript library like this:

        import ConvertApi from 'convertapi-js'
    
        let convertApi = ConvertApi.auth('your-api-secret')

Convert CSV to XLSX using JavaScript in no time!

Once you have your authentication in place, simply copy-paste this csv to xlsx conversion code snippet into your JavaScript project. Convert CSV to XLSX documents using JavaScript with no effort at all!

// Code snippet is using the ConvertAPI JavaScript Client: https://github.com/ConvertAPI/convertapi-js

// Code snippet is using the ConvertAPI Node.js Client: https://github.com/ConvertAPI/convertapi-nodejs

// Code snippet is using the ConvertAPI PHP Client: https://github.com/ConvertAPI/convertapi-php

// Code snippet is using the ConvertAPI Java Client: https://github.com/ConvertAPI/convertapi-java

// Code snippet is using the ConvertAPI C# Client: https://github.com/ConvertAPI/convertapi-dotnet

# Code snippet is using the ConvertAPI Ruby Client: https://github.com/ConvertAPI/convertapi-ruby

# Code snippet is using the ConvertAPI Python Client: https://github.com/ConvertAPI/convertapi-python

// Code snippet is using the ConvertAPI Go Client: https://github.com/ConvertAPI/convertapi-go

REM Code snippet is using the command line utility program: https://github.com/ConvertAPI/convertapi-cli

Upload the file and see how it works

You can set up the advanced conversion parameters and test the conversion result online using our interactive demo tool. It will auto-generate the code snippet for you!

Advanced CSV to XLSX conversion parameters

CellType Collection

Set Excel cell type, if set as text the date and number format will be the same as in CSV file.

Values: general text

Delimiter String

Set fields separator.