This guide shows you how to compare Word documents using the .NET REST API. You’ll master comparing Word files with the C# Low‑Code API through the .NET cloud SDK, and get a full program flow plus ready‑to‑run sample code for online execution.

Prerequisite

• Create an account and get API credentials
• Download the Aspose.Words Cloud SDK for .NET (GitHub link) to compare two Word files
• Set up a C# solution project with the SDK to perform DOCX comparisons.

Steps Compare Two Word Docs with C# Low Code API

1. Initialize the WordsApi object by setting the cloned ID and secret to compare the documents
2. Read the latest Word file into the memory stream and upload it to the cloud storage
3. Create the CompareData object and use the uploaded file as a reference
4. Read the initial Word file into the memory stream
5. Create the CompareDocumentOnlineRequest object by providing the initial Word file, updated Word file and the output file name
6. Invoke the CompareDocumentOnline method and provide the request object
7. Download the output Word file from the response and save it on the disk

The above steps describe how to compare Word docs online with C# Low Code API. Commence the process by uploading the latest Word file to cloud storage followed by creating the CompareData object using the uploaded document reference. Read the original file into the memory stream, create the CompareDocumentOnlineRequest with the uploaded Word file, local document with changes, and the output Word file and finally call the CompareDocumentOnline() method to compare the Word files.

Code to Compare Word Documents Online with NET REST API

With this example you can see how to compare two Word documents using the C# REST API. First, the latest Word file is uploaded to cloud storage to serve as the reference, while the earlier version is read locally and compared against that reference. The CompareData class exposes a CompareOptions property that lets you fine‑tune the comparison—ignoring case changes, comments, fields, footnotes, formatting, headers and footers, tables, and text boxes.

By now you’ve seen how to compare two Word documents using the .NET REST API. If you also need to remove comments from a Word file, check out our guide: Delete Comments in Word DOC with NET REST API.