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Convert images DJVU to WEBP via C#

Transform images DJVU into WEBP using native .NET APIs without needing any image editor or 3rd-party libraries

How to Convert DJVU to WEBP Using C#

Converting file formats may seem like a routine task encountered by graphic designers. Yet, underestimating its significance would be a mistake. The evaluation of your work might depend on how swiftly and effectively you tackle this task. Typically, original images need conversion into formats better suited for printing or online publication. If the original image originates from a graphic editor, it might be in vector format. In this scenario, it must be rasterized and converted to a raster format for publishing purposes. You have the choice to save the image in an uncompressed format for optimal quality or convert it to a lossless compressed format to reduce file size. In certain contexts, like web publishing, you can opt for lossy compressed formats. Specially designed algorithms for image data compression permit a significant reduction in file size while preserving acceptable image quality. This facilitates fast image file downloads from the internet. In order to convert DJVU to WEBP, we’ll use Aspose.Imaging for .NET API which is a feature-rich, powerful and easy to use image manipulation and conversion API for C# platform. Open NuGet package manager, search for Aspose.Imaging and install. You may also use the following command from the Package Manager Console.

Package Manager Console Command
PM> Install-Package Aspose.Imaging

Steps to Convert DJVU to WEBP via C#

Developers can easily load & convert DJVU files to WEBP in just a few lines of code.

load DJVU file with Image.Load method;
create & set the instance of required subclass of ImageOptionsBase (e.g. BmpOptions, PngOptions, etc.);
call the Image.Save method;
pass file path with WEBP extension & object of ImageOptionsBase class.

System Requirements

Before running the conversion example code, make sure that you have the following prerequisites:

Operating system: Windows or Linux.
Development environment: Supports .NET Core 7 and higher, such as Microsoft Visual Studio.

Free App to Convert DJVU to WEBP

Select or drag and drop DJVU image
Choose format and click Convert button
Click Download button to download WEBP image

Check our live demos to convert DJVU to WEBP

Convert DJVU to WEBP - .NET

	using Aspose.Imaging;
	using System;
	using System.IO;
	using System.Text;
	using System.Collections.Generic;

	//You can get all image templates from https://github.com/aspose-imaging/Aspose.Imaging-for-.NET/blob/master/Examples/Data/Templates.zip
	//After download archive please unpack it and replace templatesFolder variable path with your path to unpacked archive folder
	string templatesFolder = @"c:\Users\USER\Downloads\templates\";

	// Load the djvu file in an instance of Image
	using (var image = Aspose.Imaging.Image.Load(Path.Combine(templatesFolder, @"template.djvu")))
	{
	// Create an instance of WebPOptions
	var exportOptions = new Aspose.Imaging.ImageOptions.WebPOptions();

	// Save djvu to webp
	image.Save(Path.Combine(templatesFolder, "output.webp"), exportOptions);

	File.Delete(Path.Combine(templatesFolder, "output.webp"));
	}

view raw convert-djvu-to-webp.cs hosted with ❤ by GitHub

DJVU What is DJVU File Format

DjVu, pronounced as “déjà vu”, is a graphics file format intended for scanned documents and books especially those which contain the combination of text, drawings, images and photographs. It was developed by AT&T Labs. It uses multiple techniques like image layer separation of text and background images, progressive loading, arithmetic coding and lossy compression for bitonal images. Since DJVU file can contain compressed yet high-quality colour images, photographs, text, and drawings and can be saved in less space therefore, it's used on web as eBooks, manuals, newspapers, ancient documents, etc.

WEBP What is WEBP File Format

WebP, introduced by Google, is a modern raster web image file format that is based on lossless and lossy compression. It provides same image quality while considerably reducing the image size. Since most of the web pages use images as effective representation of data, the use of WebP images in web pages results in faster loading of web pages. As per Google, WebP lossless images are 26% smaller in size compared to PNGs, while WebP lossy images are 25-34% smaller than comparable JPEG images. Images are compared based on the Structural Similarity (SSIM) index between WebP and other image file formats. WebP is a sister project of WebM multimedia container format.

Other Supported Conversions

Using C#, one can easily convert different formats including:

BMP (Bitmap Picture)

GIF (Graphical Interchange Format)

DICOM (Digital Imaging & Communications)

EMF (Enhanced Metafile Format)

JPG (Joint Photographic Experts Group)

JPEG (Joint Photographic Experts Group)

JP2 (JPEG 2000)

J2K (Wavelet Compressed Image)

JPEG2000 (JPEG 2000)

PNG (Portable Network Graphics)

APNG (Animated Portable Network Graphics)

PSD (Photoshop Document)

DXF (Drawing Interchange Format, or Drawing Exchange Format,)

SVG (Scalable Vector Graphics)

TIFF (Tagged Image Format)

WEBP (Raster Web Image)

WMF (Microsoft Windows Metafile)

PDF (Portable Document Format (PDF))

HTML (HTML5 Canvas)

EMZ (Windows Compressed Enhanced Metafile)

WMZ (Compressed Windows Media Player Skin)

TGA (Targa Graphic)

SVGZ (Compressed version of Scalable Vector Graphics (.SVG) file.)

CANVAS (HTML5 Canvas)

ICO (Windows icon)