Convert PDF files in Java

Portable Document Format (PDF) was developed to introduce a standard for document’s representation and other reference material in a format that is independent of application software, hardware as well as operating system. Content of PDF files is not limited to text only, it could be hyperlinks, images, interactive buttons and forms, electronic signatures, watermarks and many more. Therefore it’s often needed to convert PDF files to some other formats to edit or modify its content. Using GroupDocs.Conversion for Java library you can convert PDF files to a wide range of popular file formats, and all you need for this is just several lines of lines code in Java programming language.

GroupDocs.Conversion for Java supports different kinds of conversions from PDF documents to other file formats and also conversion from different formats to PDF. You can examine conversion quality and accuracy online by using GroupDocs.Conversion App live demo. It works on any device and is absolutely free.

Learn this section for PDF conversion code snippets and examples in Java programming language.

Convert PDF to Word

Microsoft Word is one of the most convenient ways to edit and manage document’s content, that’s why PDF to Word conversion is so popular. Transforming a PDF file to Word document in a manual way could be a tricky and lengthy process. Much easier is to convert PDF to Word programmatically in Java. This way any file created as PDF could be converted to a Word document for later content manipulations and editing text, tables, images, lists etc.

GroupDocs.Conversion for Java supports PDF conversion to all popular formats of Microsoft Word like - DOC, DOCX, RTF etc. Document transformation process is quite simple and straightforward from users point of view - all you need is two-three lines of code. The default format for PDF to Word conversion is DOCX - it’s a well-known format for Microsoft Word 2007 and later versions which is a combination of XML and binary files.
Here is a code snippet for PDF to DOCX conversion:

// Load the source PDF file
Converter converter = new Converter("sample.pdf");
// Set the convert options for DOCX format
WordProcessingConvertOptions options = new WordProcessingConvertOptions();
// Convert to DOCX format
converter.convert("converted.docx", options);

GroupDocs.Conversion for Java also provides WordProcessingFileType class if you need to specify another Word file format as a target for your conversion. For example DOC format represents documents generated by Microsoft Word 97-2003 and still is quite popular and the code snippet for PDF to DOC conversion is the following:

// Load the source PDF file
Converter converter = new Converter("sample.pdf");
// Set the convert options for DOC format
WordProcessingConvertOptions options = new WordProcessingConvertOptions();
options.setFormat(WordProcessingFileType.Doc);
// Convert to DOC format
converter.convert("converted.doc", options);

Convert PDF to Excel

Spreadsheet formats are designed to represent data in the form of rows and columns, and this way tables are much easier to use. Therefore, when it’s required to transform data from PDF file into Excel format GroupDocs.Conversion library comes to resque.

You can choose from wide range of supported spreadsheet formats:

  • Microsoft Excel - XLS, XLSX, XLSM, XLSB, XLTX, XLT;
  • OpenDocument - ODS, OTS;
  • Apple iWork Numbers.

Required spreadsheet format can be specified with the help of SpreadsheetFileType class, however default format for PDF to Spreadsheet conversion is XLSX. Please check below how to convert PDF to Excel in Java in a few lines of code.

// Load the source PDF file
Converter converter = new Converter("sample.pdf");
// Set the convert options for XLSX format
SpreadsheetConvertOptions options = new SpreadsheetConvertOptions();
// Convert to XLSX format
converter.convert("converted.xlsx", options);

Convert PDF to PowerPoint

Presentation file formats store collections of records to accommodate data such as: slides, shapes, text, animations, video, audio and embedded objects. The most popular app for creating and editing presentations is Microsoft PowerPoint with its PPT and PPTX file formats, though there are plenty of applications that work with OpenDocument formats like ODP and OTP. GroupDocs.Conversion for Java is a wise choice when you have to convert PDF file into PowerPoint format, and here is how code snippet looks like for PDF to PPTX conversion in Java language:

// Load the source PDF file
Converter converter = new Converter("sample.pdf");
// Set the convert options for PPTX format
PresentationConvertOptions options = new PresentationConvertOptions();
// Convert to PPTX format
converter.convert("converted.pptx", options);

In case you need to convert PDF to another presentation format please use PresentationFileType to specify it.

Convert PDF to Image

Popular use case is when you need to save the whole PDF document or some specific document pages as a collection of images. GroupDocs.Conversion for Java allows converting PDF to images of many popular formats like - TIFF, JPG, PNG, GIF, BMP and many others. The code snippet for such conversion is a bit different from other conversions as you have to declare a SavePageStream delegate that specifies saved images name format. You can choose the desired image format by using ImageFileType class.

Convert PDF to PNG

Please check a complete code example of PDF to PNG conversion below:

// Load the source PDF file
Converter converter = new Converter("sample.pdf");
SavePageStream getPageStream = page => new FileOutputStream(String.format("converted-page-%s.png", page));
// Set the convert options for PNG format
var options = new ImageConvertOptions();
options.setFormat(ImageFileType.Png);
// Convert to PNG format
 converter.convert(getPageStream, options);

Convert PDF to JPG

PDF to JPG conversion is another one popular use case and the code snippet for it is similar to what was described before. The only difference is the otput image files extension and ImageConvertOptions.Format that should be set to ImageFileType.Jpg:

// Load the source PDF file
Converter converter = new Converter("sample.pdf");
SavePageStream getPageStream = page => new FileOutputStream(String.format("converted-page-%s.jpg", page));
// Set the convert options for JPG format
ImageFormatOptions options = new ImageConvertOptions();
options.setFormat(ImageFileType.Jpg);
// Convert to JPG format
converter.convert(getPageStream, options);