
Convert Excel (XLS, XLSX) to PDF online using Node.js API
When it comes to sharing or printing spreadsheet data, converting Excel to PDF is the most reliable option. PDF ensures universal readability, preserves the document layout, and supports cross-platform compatibility. With Aspose.Cells Cloud SDK for Node.js, converting XLS or XLSX to PDF becomes seamless, fast, and highly accurate—perfect for developers and enterprises alike.
Why Convert Excel to PDF?
- Universal Format: PDF files open on any device without formatting issues.
- Secure: Prevents unauthorized editing while maintaining data integrity.
- Print-Ready: Ideal for reports, invoices, and financial documents.
- Cross-Platform Sharing: Viewable on Windows, macOS, Linux, iOS, Android.
In this article, we are going to discuss following topics in more details.
Getting Started with Node.js API
Using Aspose.Cells Cloud for Node.js, you get the capabilities to easily convert an Excel workbook to PDF format. It enables you to transform all major formats including XLS, XLSX, XLSB, XLTX, ODS and many more. For further information, you may consider visiting Supported file formats.
Prerequisites:
- Sign up and get your API credentials from the Aspose Cloud Dashboard.
- Install the Node.js SDK via npm:
npm install asposecellscloud --save
Node.js Code to Convert Excel to PDF
Please follow the steps specified below to convert your Excel spreadsheet to a .txt file step-by-step:
- Create an object of cellsApi class that takes Client ID and Client Secret details as arguments.
- Upload the input XLS file using uploadFile(…) method to the cloud storage.
- Now invoke the PostWorkbookSaveAs(…)16 method for Excel to PDF format.

A preview of Excel to PDF conversion with Node.js API
Convert Excel to PDF via cURL
Prefer command-line tools? You can also convert Excel to PDF using the REST API with cURL.
Step 1: Generate Access Token:
curl -v "https://api.aspose.cloud/connect/token" \
-X POST \
-d "grant_type=client_credentials&client_id=CLIENT_ID&client_secret=CLIENT_SECRET" \
-H "Content-Type: application/x-www-form-urlencoded" \
-H "Accept: application/json"
Step 2: Trigger Excel to PDF Conversion: Now we are going to execute PostWorkbookSaveAs method to perform Excel to PDF conversion:
curl -v -X POST "https://api.aspose.cloud/v3.0/cells/{sourceFile}/SaveAs?newfilename=converted.txt&isAutoFitRows=false&isAutoFitColumns=false&checkExcelRestriction=true" \
-H "accept: application/json" \
-H "authorization: Bearer <JWT_Token>" \
-H "Content-Type: application/json" \
-d "{ \"SaveFormat\": \"TXT\"}"
Replace:
sourceFile
with input Excel file name.<JWT_TOKEN>
with the access token you generated.
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Excel to PDF converter App.
Useful Developer Resources
Conclusion
Whether you’re developing an enterprise-grade solution or a simple report automation tool, Aspose.Cells Cloud SDK for Node.js provides a robust and reliable way to convert Excel to PDF online. The RESTful approach makes integration easy, while the SDK ensures precise formatting and fast execution.
Start converting Excel files to PDF now and streamline your document workflows!
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