Convert EPUB to JPG in Java

To convert EPUB to JPG in Java, open the EPUB file as an input stream, create ImageSaveOptions with ImageFormat.Jpeg, and call Converter.convertEPUB(). Use the save options to configure resolution, page size, margins, smoothing, and background color.

An EPUB file packages HTML, CSS, images, and other publication resources. Converting EPUB to JPG produces raster output that can be used in previews, presentations, and other workflows that require image files. JPG uses lossy compression and does not support transparency, so select an appropriate background color when needed.

Convert EPUB to JPG in Two Lines of Java Code

The following example opens an EPUB stream and passes it with JPEG save options and an output path to Converter.convertEPUB():

1// Convert EPUB to JPG using Java
2
3// Open an existing EPUB file for reading
4java.io.FileInputStream fileInputStream = new java.io.FileInputStream("input.epub");
5
6// Invoke the convertEPUB() method to convert EPUB to JPG
7Converter.convertEPUB(fileInputStream, new ImageSaveOptions(ImageFormat.Jpeg), "convert-in-two-lines.jpg");

Example_ConvertEpubToJpgInTwoLinesOfCode.java hosted with ❤ by GitHub

The example reads input.epub and saves the result as convert-in-two-lines.jpg.

Convert an EPUB File to JPG

Follow these steps for a basic EPUB-to-JPG conversion:

Open the source EPUB file as a FileInputStream.
Create ImageSaveOptions with ImageFormat.Jpeg.
Call Converter.convertEPUB(stream, options, outputPath) to convert EPUB to JPG.

In this example, the source is input.epub, and the result is saved as input-output.jpg.

 1// Convert EPUB to JPEG using Aspose.HTML for Java
 2
 3// Open an existing EPUB file for reading
 4java.io.FileInputStream fileInputStream = new java.io.FileInputStream("input.epub");
 5
 6// Create an instance of the ImageSaveOptions class
 7ImageSaveOptions options = new ImageSaveOptions(ImageFormat.Jpeg);
 8
 9// Call the сonvertEPUB() method to convert EPUB to JPG
10Converter.convertEPUB(fileInputStream, options, "input-output.jpg");

Example_ConvertEpubToJpegImage.java hosted with ❤ by GitHub

Download complete examples and data files from GitHub.

Save Options – ImageSaveOptions Class

For JPG output, the ImageSaveOptions settings used most often control the image format, page background, page dimensions, resolution, and smoothing.

Method	Use it to
`setFormat(value)`	Select the output image format. The default is PNG, so choose `ImageFormat.Jpeg` for JPG.
`setBackgroundColor(value)`	Set the color that fills each output page. The default is transparent.
`getPageSetup()`	Access the page setup used to configure output page size and margins.
`setHorizontalResolution(value)`	Set horizontal image resolution. The default is 300 dpi.
`setVerticalResolution(value)`	Set vertical image resolution. The default is 300 dpi.
`setSmoothingMode(value)`	Configure image rendering quality.

For additional settings, see Fine-Tuning Converters.

Customize EPUB to JPG with ImageSaveOptions

Use ImageSaveOptions when the JPG output requires custom rendering settings:

Open the source EPUB file as an input stream.
Create ImageSaveOptions with ImageFormat.Jpeg and configure the required image settings.
Call Converter.convertEPUB(stream, options, outputPath) to convert EPUB to JPG.

The following example converts input.epub to input-options.jpg with high-quality smoothing, 400 dpi resolution, an Alice Blue background, and an 800 × 500 pixel page with custom margins:

 1// Convert EPUB to JPG in Java with custom settings
 2
 3// Open an existing EPUB file for reading
 4java.io.FileInputStream fileInputStream = new java.io.FileInputStream("input.epub");
 5
 6// Initialize ImageSaveOptions
 7ImageSaveOptions options = new ImageSaveOptions(ImageFormat.Jpeg);
 8options.setSmoothingMode(SmoothingMode.HighQuality);
 9options.setHorizontalResolution(Resolution.to_Resolution(400));
10options.setVerticalResolution(Resolution.to_Resolution(400));
11options.setBackgroundColor(Color.getAliceBlue());
12options.getPageSetup().setAnyPage(new Page(new Size(800, 500), new Margin(30, 20, 10, 10)));
13
14// Convert EPUB to JPG
15Converter.convertEPUB(fileInputStream, options, "input-options.jpg");

Example_ConvertEpubToImageUsingImageSaveOptions.java hosted with ❤ by GitHub

Related EPUB Conversion Guides

EPUB Converter – review supported EPUB conversion workflows.
Convert EPUB to PNG – use lossless PNG image output.
Convert EPUB to PDF – convert EPUB to a fixed-layout document.

Other Platforms

FAQ

Can I convert EPUB to JPG for free?

Yes. Use the free online EPUB to JPG Converter for a quick manual conversion. Aspose.HTML for Java is a commercial API for programmatic conversion and can be evaluated before licensing; see Licensing.

Why should I set a background color for JPG output?

JPG does not support transparency. Set a background color in ImageSaveOptions when the EPUB design contains transparent page areas and the default replacement color is not appropriate for the output.

Try Online EPUB to JPG Conversion

Use the free online EPUB to JPG Converter for quick manual conversion without writing Java code.

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