Convert PostScript to BMP using Java

You can check the quality of Aspose.Page PS to BMP conversion and view the results via free online PostScipt to BMP Converter or PostScript Viewer

Aspose.Page for Java PS to BMP converter allows to convert PostScript (PS) file to BMP image on any OS for which Java Virtual Machine exists.
It is necessary to do several steps in order to perform PS to BMP conversion:

1. Initialize an input stream for input PS file.
2. Create an instance of PsDocument from created earlier input stream.
3. Use ImageSaveOptions to specify AdditionalFontsFolder and SuppressError boolean value.
4. Create an instance of ImageDevice specifying image type and size if it is necessary.
5. Save PostScript document as image with image save options to an array of arrays of bytes. One array of bytes for one page of input document.
6. Save resulting 2-dimensional arrays of bytes to BMP files creating for every bytes array a new file output stream.
7. If SuppressErrors value was true, as it is by default, It is possible to see what errors were thrown during conversion of PS to BMP.

Following code snippet shows how to convert PS to BMP files in Java:

// For complete examples and data files, please go to https://github.com/aspose-page/Aspose.Page-for-Java
// The path to the documents directory.
String dataDir = Utils.getDataDir();
//Initialize image format
ImageFormat imageFormat = ImageFormat.BMP;
// Initialize Encapsulated PostScript input stream
FileInputStream psStream = new FileInputStream(dataDir + "input.ps");

PsDocument document = new PsDocument(psStream);

// If you want to convert Postscript file despite of minor errors set this flag
boolean suppressErrors = true;

//Initialize options object with necessary parameters.
ImageSaveOptions options = new ImageSaveOptions(suppressErrors);
// If you want to add special folder where fonts are stored. Default fonts folder in OS is always included.
//options.setAdditionalFontsFolders(new String [] {"FONTS_FOLDER"});

// Default image size is 595x842 and it is not mandatory to set it in ImageDevice
com.aspose.eps.device.ImageDevice device = new com.aspose.eps.device.ImageDevice(imageFormat);
// But if you need to specify size use constructor with two parameters
//ImageDevice device = new ImageDevice(new Dimension(595, 842), imageFormat);

try {
    document.save(device, options);
} finally {
    psStream.close();
}

byte[][] imagesBytes = device.getImagesBytes();

int i = 0;

for (byte [] imageBytes : imagesBytes) {
    String imagePath = dataDir + "PSToImage" + i + "." + imageFormat.toString().toLowerCase();
    FileOutputStream fs = new FileOutputStream(imagePath);

    try {
        fs.write(imageBytes, 0, imageBytes.length);
    } catch (IOException ex) {
        System.out.println(ex.getMessage());
    } finally {
        fs.close();
    }
    i++;
}

//Review errors
if (suppressErrors) {
    for (Exception ex : options.getExceptions()) {
        System.out.println(ex.getMessage());
    }
}

See PS to BMP conversion in .NET and C++.

Let’s consider ImageSaveOptions. Using this class we can assign different conversion parameters while converting PS to BMP.

• AdditionalFontsFolder specifies locations where to find fonts. System fonts folders are always included by default.
• SuppressError controls behaviour of PS to BMP converter when non-critical errors are appeared. If value is true than it is possible to view a list of such errors after conversion in Exceptions field. Default value is true.
• Debug allows outputting debug information to console. Default value is false.

Evaluate PS to BMP conversion online on our PS to BMP Converter. You can convert several PS files to BMP at once and dowload results in a few seconds.

You can download examples and data files from GitHub.