Why optimize files in JavaScript?

Compressing files allows you to improve the use of disk spaces and network traffic without sacrificing data quality. Install Aspose.Words for Node.js via .NET. Add a library reference (import the library) to your JavaScript project. Open the source file in JavaScript. Compress documents and images without losing quality. Call the Document.cleanup() method. The resulting code may vary depending on the input/output file formats. Get the result as a compressed file.

What file formats can I optimize with JavaScript library?

We support a variety of file formats for optimization using Aspose.Words for Node.js via .NET, including DOCX, DOC, HTML, RTF, Markdown, ODT, XML, JPG, PNG, TIFF, TXT and many more.

What is the maximum allowed file size for optimization using Aspose.Words for Node.js via .NET?

There are no size limits to compress files using Aspose.Words for Node.js via .NET.

Optimize File's Content Using Javascript

Compress Word documents in JavaScript

Make large files smaller without loss of quality. Delete unnecessary and unused data. Shrink the size of Word and HTML files in JavaScript. Our JavaScript library provides developers with an integrated API to optimize documents in various formats.

This JavaScript library is a stand-alone solution and doesn't require any third party software installed.

Reduce the size of Word and HTML files using JavaScript

The maximum effect can be obtained by optimizing high-resolution images, as well as documents containing such images. Our JavaScript library will help you to compress DOCX, DOC, RTF, ODT, EPUB, HTML, JPG, PNG files.

Optimization of documents without loss of quality made easy with 'Aspose.Words for Node.js via .NET'. The following example shows how to shrink the size of a Word document in JavaScript:

JavaScript code example to optimize file's content and size

Input file

Upload a file you want to optimize/compress

Run code

Output format

Select the target format from the list

CompressionLevel

Cache shapes ^?

npm install @aspose/words

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const aw = require('@aspose/words');

var doc = new aw.Document("Input.docx");
doc.cleanup();

var shapes = doc.getChildNodes(aw.NodeType.Shape, true)
for (var shape of shapes) {
    if (shape.hasImage()) {
        // It's up to developer to choose the library for image compression.
        const imageData = shape.getImageData().toStream();

        // ...
        // Compress image and set it back to the shape.
        shape.getImageData().setImage(compressedImageBuffer);
    }
}

var saveOptions = new aw.Saving.OoxmlSaveOptions()
saveOptions.compressionLevel = aw.Saving.CompressionLevel.Maximum

doc.save("Output.docx", saveOptions)

							const aw = require('@aspose/words');

var doc = new aw.Document("Input.docx");
doc.cleanup();

var shapes = doc.getChildNodes(aw.NodeType.Shape, true)
for (var shape of shapes) {
    if (shape.hasImage()) {
        // It's up to developer to choose the library for image compression.
        const imageData = shape.getImageData().toStream();

        // ...
        // Compress image and set it back to the shape.
        shape.getImageData().setImage(compressedImageBuffer);
    }
}

var saveOptions = new aw.Saving.PdfSaveOptions()
saveOptions.cacheBackgroundGraphics = true

doc.save("Output.docx", saveOptions)
 
							const aw = require('@aspose/words');

var doc = new aw.Document("Input.docx");
doc.cleanup();

var shapes = doc.getChildNodes(aw.NodeType.Shape, true)
for (var shape of shapes) {
    if (shape.hasImage()) {
        // It's up to developer to choose the library for image compression.
        const imageData = shape.getImageData().toStream();

        // ...
        // Compress image and set it back to the shape.
        shape.getImageData().setImage(compressedImageBuffer);
    }
}

doc.save("Output.docx")
 
							const aw = require('@aspose/words');

var doc = new aw.Document("Input.docx");
doc.cleanup();

var shapes = doc.getChildNodes(aw.NodeType.Shape, true)
for (var shape of shapes) {
    if (shape.hasImage()) {
        // It's up to developer to choose the library for image compression.
        const imageData = shape.getImageData().toStream();

        // ...
        // Compress image and set it back to the shape.
        shape.getImageData().setImage(compressedImageBuffer);
    }
}

var saveOptions = new aw.Saving.OoxmlSaveOptions()
saveOptions.compressionLevel = aw.Saving.CompressionLevel.Maximum

doc.save("Output.docx", saveOptions)
 
							const aw = require('@aspose/words');

var doc = new aw.Document()
var builder = new aw.DocumentBuilder(doc)

shape = builder.insertImage("Input.docx")

var saveOptions = new aw.Saving.ImageSaveOptions(aw.SaveFormat.Docx)

shape.getShapeRenderer().save("Output.docx", saveOptions)
 
			

					Run code
				

You may freely copy this code and use it in any applicable purpose

How to compress Word, JPG and other file formats in JavaScript

Install Aspose.Words for Node.js via .NET.
Add a library reference (import the library) to your JavaScript project.
Open the source file in JavaScript.
Compress documents and images without losing quality.
Call the Document.cleanup() method. The resulting code may vary depending on the input/output file formats.
Get the result as a compressed file.

JavaScript library to optimize and compress files

We host our Node.js via .Net packages in NPM repositories. Please follow the step-by-step instructions on how to install "Aspose.Words for Node.js via .NET" to your developer environment.