Compress PDF in Node SDK

Reduce PDF size using JavaScript

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

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Compress PDF in JavaScript

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

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

Reduce PDF file size in JavaScript

As mentioned, our Node SDK allows you to programmatically reduce PDF size. And now you can try our powerful functionality and evaluate how to compress PDF 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.pdf");
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: "pdf"

    .then((convertDocumentResult) => {
        console.log("Result of ConvertDocument: ", convertDocumentResult);
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How to compress PDF 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 PDF to compress
  5. Compress PDF, clean unused information
  6. Select the output file format
  7. Get the result of PDF compression as a separate file

JavaScript library to use PDF 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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