Why optimize files in C#?

Compressing files allows you to improve the use of disk spaces and network traffic without sacrificing data quality. Install Aspose.Words for .NET. Add a library reference (import the library) to your C# project. Open the source file in C#. 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 C# library?

We support a variety of file formats for optimization using Aspose.Words for .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 .NET?

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

Optimize File's Content Using C#

Compress Word documents in C#

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

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

Reduce the size of Word and HTML files using C#

The maximum effect can be obtained by optimizing high-resolution images, as well as documents containing such images. Our C# 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 .NET'. The following example shows how to shrink the size of a Word document in C#:

C# 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

dotnet add package Aspose.Words

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using Aspose.Words;

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

var nodes = doc.GetChildNodes(NodeType.Shape, true);
foreach (Shape shape in nodes)
{
    if (shape.IsImage)
    {
        // It's up to developer to choose the library for image compression.
        using var image = Image.FromStream(shape.ImageData.ToStream());

        // ...
        // Compress image and set it back to the shape.
        shape.ImageData.SetImage("yourCompressedImage");
    }
}


var saveOptions = new OoxmlSaveOptions
{
  CompressionLevel = CompressionLevel.Maximum
};

doc.Save("Output.docx", saveOptions);
                            using Aspose.Words;

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

var nodes = doc.GetChildNodes(NodeType.Shape, true);
foreach (Shape shape in nodes)
{
    if (shape.IsImage)
    {
        // It's up to developer to choose the library for image compression.
        using var image = Image.FromStream(shape.ImageData.ToStream());

        // ...
        // Compress image and set it back to the shape.
        shape.ImageData.SetImage("yourCompressedImage");
    }
}

var saveOptions = new PdfSaveOptions
{
    CacheBackgroundGraphics = true
};

doc.Save("Output.docx", saveOptions);

                            using Aspose.Words;

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

var nodes = doc.GetChildNodes(NodeType.Shape, true);
foreach (Shape shape in nodes)
{
    if (shape.IsImage)
    {
        // It's up to developer to choose the library for image compression.
        using var image = Image.Fromstream(shape.ImageData.ToStream());

        // ...
        // Compress image and set it back to the shape.
        shape.ImageData.SetImage("yourCompressedImage");
    }
}

doc.Save("Output.docx");
                            using Aspose.Words;

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

var nodes = doc.GetChildNodes(NodeType.Shape, true);
foreach (Shape shape in nodes)
{
    if (shape.IsImage)
    {
        // It's up to developer to choose the library for image compression.
        using var image = Image.FromStream(shape.ImageData.ToStream());

        // ...
        // Compress image and set it back to the shape.
        shape.ImageData.SetImage("yourCompressedImage");
    }
}


var saveOptions = new OoxmlSaveOptions
{
  CompressionLevel = CompressionLevel.Maximum
};

doc.Save("Output.docx", saveOptions);
                            using Aspose.Words;

var doc = new Document();
var builder = new DocumentBuilder(doc);

var shape = builder.InsertImage("Input.docx");

var saveOptions = new ImageSaveOptions(SaveFormat.Docx)
{

};

shape.GetShapeRenderer().Save("Output.docx", saveOptions);

                            using Aspose.Words;
using Aspose.Words.Pdf2Word.FixedFormats;

using var pdfStream = File.OpenRead("Input.docx");

var renderer = new PdfFixedRenderer();
var pdfReadOptions = new PdfFixedOptions
{
    ImageFormat = FixedImageFormat.Jpeg,
    JpegQuality = 50
};

const double maxPageDimension = 1584;
var pagesStream = renderer.SavePdfAsImages(pdfStream, pdfReadOptions);

var builder = new DocumentBuilder();
for (var i = 0; i < pagesStream.Count; ++i)
{
    // Set maximum page size to avoid the current page image scaling.
    var pageSetup = builder.PageSetup;
    SetPageSize(pageSetup, maxPageDimension, maxPageDimension);

    var pageImage = builder.InsertImage(pagesStream[i]);

    SetPageSize(pageSetup, pageImage.Width, pageImage.Height);
    pageSetup.TopMargin = 0;
    pageSetup.LeftMargin = 0;
    pageSetup.BottomMargin = 0;
    pageSetup.RightMargin = 0;

    if (i != pagesStream.Count - 1)
        builder.InsertBreak(BreakType.SectionBreakNewPage);
}

var saveOptions = new PdfSaveOptions
{
    CacheBackgroundGraphics = true
};

builder.Document.Save("Output.docx", saveOptions);

private void SetPageSize(PageSetup pageSetup, double width, double height)
{
    pageSetup.PageWidth = width;
    pageSetup.PageHeight = height;
}

            

					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 C#

Install Aspose.Words for .NET.
Add a library reference (import the library) to your C# project.
Open the source file in C#.
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.

C# library to optimize and compress files

There are three alternative options to install "Aspose.Words for .NET" onto your system. Please choose one that resembles your needs and follow the step-by-step instructions:

Install a NuGet Package. See Documentation
Install the library using Package Manager Console within Visual Studio IDE
Install the library manually using Windows Installer

System Requirements

Our product is fully cross-platform and supports all major .NET implementations:

.NET ≥ 5.0
.NET Core ≥ 2.0
.NET Standard ≥ 2.0
.NET Framework ≥ 3.5
MonoMac
MonoAndroid
Xamarin

As far as .NET code doesn't depend on the underlying hardware or operating system, but only on a Virtual Machine, you are free to develop any kind of software for Windows, macOS, Android, iOS and Linux. Just make sure you have installed the corresponding version of .NET Framework, .NET Core, Windows Azure, Mono or Xamarin.

We recommend using Microsoft Visual Studio, Xamarin, and MonoDevelop integrated development environments to create C#, F#, VB.NET applications.

Fore more details please refer to Product Documentation.