Compress DOCX in Node SDK

Reduce DOCX size using JavaScript

Using the REST API in JavaScript, developers can compress DOCX programmatically. With the given solution, the output will be a high quality file after compression.

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Compress DOCX in JavaScript

Using our powerful JavaScript API, developers can compress DOCX to optimize content and output file size. Reducing file size occurs by cleaning up unused data and resources. You can also compress images to make the output file size even smaller.

The result of content optimization and compression can be saved in the original DOCX or any available save format – DOCX, DOC, RTF, PDF, HTML and many others.

Reduce DOCX file size in JavaScript

As mentioned, our Node SDK allows you to programmatically reduce the size of DOCX. And now you can try our powerful functionality and evaluate how to compress DOCX in JavaScript with the following example:

Upload a file you want to optimize/compress
Run code
Select the target format from the list
import * as fs from "fs";

const wordsApi = new WordsApi("####-####-####-####-####", "##################");

const requestDocument = fs.createReadStream("Input.docx");
const requestCompressOptions = new model.CompressOptions({
    imagesQuality: 75,
    imagesReduceSizeFactor: 1
const compressDocumentRequest = new model.CompressDocumentOnlineRequest({
    document: requestDocument,
    compressOptions: requestCompressOptions

.then((compressDocumentResult) => {
    const requestDocument = compressDocumentResult.Document.Values();
    const convertDocument = new model.ConvertDocumentRequest({
        document: requestDocument,
        format: "docx"

    .then((convertDocumentResult) => {
        console.log("Result of ConvertDocument: ", convertDocumentResult);
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How to compress DOCX JavaScript REST API

  1. Install Aspose.Words Cloud for Node
  2. Add a library reference (import the library) to your JavaScript project
  3. Configure API using your app keys
  4. Load the source DOCX to compress
  5. Compress DOCX, clean unused information
  6. Select the output file format
  7. Get the result of DOCX compression as a separate file

JavaScript library to use DOCX compression

Install 'Aspose.Words Cloud SDK for Node.js' using NPM package manager. Run npm install asposewordscloud --save from the command line to install the SDK via the NPM package manager. As an alternative, you can manually clone Aspose.Words Cloud SDK for Node.js source code from GitHub and use it in your project. Please follow these Instructions to quickly get the necessary security credentials and access our REST API.

System Requirements

  • @types/request (version 2.48.3+)
  • lodash (version 4.17.15+)
  • lodash.template (version 4.5.0+)
  • request (version 2.88.0+)
  • request-debug (version 0.2.0+)

Refer to the Repository Documentation to see more details.

Other supported file formats

You can perform document compression for other file formats:


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