Convert EPUB to APNG via Java
Export EPUB file to APNG within any within any Java J2SE, J2EE, J2ME applications without using Adobe® Acrobat Reader
Converting an epub file to an APNG image in Java is a straightforward process that can be completed in two simple steps. The first step is to use the Aspose.PDF for Java API, which is part of the Aspose.Total for Java package. This API allows you to export the epub file to a JPEG image. The second step is to use the Aspose.Imaging for Java Image Processing API to render the JPEG image to an APNG image.
The Aspose.PDF for Java API is a powerful library that enables you to manipulate PDF documents in various ways. It allows you to convert PDF documents to other file formats, such as JPEG, PNG, and TIFF. It also enables you to extract text, images, and other content from PDF documents.
The Aspose.Imaging for Java Image Processing API is a comprehensive library that provides a wide range of image processing capabilities. It allows you to manipulate images in various ways, such as resizing, cropping, rotating, and flipping. It also enables you to convert images from one format to another, such as JPEG to APNG.
By combining the capabilities of the Aspose.PDF for Java and Aspose.Imaging for Java APIs, you can easily convert an epub file to an APNG image in Java. This process is simple and efficient, and it can be completed in just two steps. With the Aspose.Total for Java package, you can access both of these powerful APIs and take advantage of their comprehensive image processing capabilities.
Export EPUB to APNG via Java
Conversion Requirements
You can easily use Aspose.Total for Java directly from a Maven based project and include libraries in your pom.xml.
Alternatively, you can get a ZIP file from downloads .
| // supports PDF, CGM, EPUB, TeX, PCL, PS, XPS, MD, MHTML, XSLFO, HTML file formats | |
| // load PDF with an instance of Document | |
| Document document = new Document("input.pdf"); | |
| // create an object of JpegDevice | |
| JpegDevice renderer = new JpegDevice(); | |
| // convert first of a particular PDF page to JPEG format | |
| renderer.process(document.getPages().get_Item(1), "output.jpeg"); | |
| // load JPEG file | |
| Image image = Image.Load("output.jpeg"); | |
| // supports Dicom, Jpeg2000, Apng, Psd, Dxf, Wmf, Emz, Wmz, Tga, Svgz file formats | |
| // save JPEG to PSD file format | |
| image.save("output.psd", new PsdOptions()); |
Convert EPUB to APNG in a Single File via Java
The API also allows you to export EPUB file to APNG to a single file. In order to convert all pages, you can first render your EPUB document to one TIFF file and after that, you can export the TIFF file to APNG. You can open the input file using Document class and create Resolution, TiffSettings, & TIFF device objects. You can get a single TIFF image using process method of TiffDevice class. Finally, you can load TIFF file using Image class and save it to APNG format using save method.
| // supports PDF, CGM, EPUB, TeX, PCL, PS, XPS, MD, MHTML, XSLFO, HTML file formats | |
| // load PDF with an instance of Document | |
| Document pdfDocument = new Document("input.pdf"); | |
| // Create Resolution object | |
| Resolution resolution = new Resolution(300); | |
| // Create TiffSettings object | |
| TiffSettings tiffSettings = new TiffSettings(); | |
| tiffSettings.setCompression(CompressionType.None); | |
| tiffSettings.setDepth(ColorDepth.Default); | |
| tiffSettings.setShape(ShapeType.Landscape); | |
| // Create TIFF device | |
| TiffDevice tiffDevice = new TiffDevice(resolution, tiffSettings); | |
| // Convert a particular page and save the image to stream | |
| tiffDevice.process(pdfDocument, 1, 1, "output.tif"); | |
| // load TIFF file | |
| Image image = Image.Load("output.tif"); | |
| // supports Dicom, Jpeg2000, Apng, Psd, Dxf, Wmf, Emz, Wmz, Tga, Svgz file formats | |
| // save TIFF to PSD file format | |
| image.save("output.psd", new PsdOptions()); |
Convert EPUB to APNG With Watermark via Java
Using the API, you can also export EPUB file to APNG with watermark in your APNG document. In order to add a watermark to you can first convert EPUB to JPEG and add a watermark in it. In order to add watermark, load an image file using the Image class, create an object of the Graphics class and initialize it with Image object, create a new Matrix object and set translation and transformation to the desired angle and add watermark using Graphics.drawString method. After adding the watermark in your image, you can save the JPEG as APNG format.
| // supports PDF, CGM, EPUB, TeX, PCL, PS, XPS, MD, MHTML, XSLFO, HTML file formats | |
| // load PDF with an instance of Document | |
| Document document = new Document("input.pdf"); | |
| // create an object of JpegDevice | |
| JpegDevice renderer = new JpegDevice(); | |
| // convert first of a particular PDF page to JPEG format | |
| renderer.process(document.getPages().get_Item(1), "output.jpeg"); | |
| // load JPEG | |
| Image image = Image.load("output.jpeg"); | |
| // create and initialize an instance of Graphics class | |
| Graphics graphics= new Graphics(image); | |
| // create an instance of Font | |
| Font font = new Font("Times New Roman", 16, FontStyle.Bold); | |
| // create an instance of SolidBrush and set its properties | |
| SolidBrush brush = new SolidBrush(); | |
| brush.setColor(Color.getBlack()); | |
| brush.setOpacity(100); | |
| Size sz = graphics.getImage().getSize(); | |
| // create an object of Matrix class for transformation | |
| Matrix matrix = new Matrix(); | |
| // first a translation then a rotation | |
| matrix.translate(sz.getWidth() / 2, sz.getHeight() / 2); | |
| matrix.rotate(-45.0f); | |
| // set the Transformation through Matrix | |
| graphics.setTransform(matrix); | |
| // draw a string using the SolidBrush and Font objects at specific point | |
| graphics.drawString("Watermark by Aspose.Imaging for Java", font, brush, 0, 0); | |
| // supports Dicom, Jpeg2000, Apng, Psd, Dxf, Wmf, Emz, Wmz, Tga, Svgz file formats | |
| // save JPEG to PSD file format | |
| image.save("output.psd", new PsdOptions()); |
Convert & Rotate EPUB to APNG File via Java
Using the API, you can also rotate the output APNG image as per your needs. The Image.rotateFlip method can be used to rotate the image by 90/180/270-degrees and flip the image horizontally or vertically. The library provides simple methods to perform complex operations while encapsulating all ugly details. You can specify the type of rotation and flip to apply to the image. In order to rotate and flip the image, you can load the converted JPEG image using the Image class and call the Image.rotateFlip method while specifying the appropriate RotateFlipType .
| // supports PDF, CGM, EPUB, TeX, PCL, PS, XPS, MD, MHTML, XSLFO, HTML file formats | |
| // load PDF with an instance of Document | |
| Document document = new Document("input.pdf"); | |
| // create an object of JpegDevice | |
| JpegDevice renderer = new JpegDevice(); | |
| // convert first of a particular PDF page to JPEG format | |
| renderer.process(document.getPages().get_Item(1), "output.jpeg"); | |
| // load JPEG file | |
| Image image = Image.Load("output.jpeg"); | |
| // roate image | |
| image.RotateFlip(RotateFlipType.Rotate270FlipNone); | |
| // supports Dicom, Jpeg2000, Apng, Psd, Dxf, Wmf, Emz, Wmz, Tga, Svgz file formats | |
| // save JPEG to PSD file format | |
| image.save("output.psd", new PsdOptions()); |