Extract text from EPUB eBooks

To extract a text from EPUB e-books getText and getText(int) methods are used. These methods allow to extract a text from the entire document or a text from the selected page. Raw mode is not supported for EPUB.

Here are the steps to extract a text from EPUB e-book:

  • Instantiate Parser object for the initial e-book;
  • Call getText method and obtain TextReader object;
  • Read a text from reader.

The following example demonstrates how to extract a text from EPUB e-book:

// Create an instance of Parser class
try (Parser parser = new Parser(Constants.SampleEpub)) {
    // Extract a text into the reader
    try (TextReader reader = parser.getText()) {
        // Print a text from the e-book
        System.out.println(reader.readToEnd());
    }
}

Here are the steps to extract a text from the page of EPUB e-book:

The following example demonstrates how to extract a text from the page of EPUB e-book:

// Create an instance of Parser class
try (Parser parser = new Parser(Constants.SampleEpub)) {
    // Get the e-book info
    IDocumentInfo documentInfo = parser.getDocumentInfo();
    // Iterate over pages
    for (int p = 0; p < documentInfo.getPageCount(); p++) {
        // Print a page number
        System.out.println(String.format("Page %d/%d", p + 1, documentInfo.getPageCount()));
        // Extract a text into the reader
        try (TextReader reader = parser.getText(p)) {
            // Print a text from the e-book
            System.out.println(reader.readToEnd());
        }
    }
}

GroupDocs.Parser also allows to extract a text from EPUB e-books as HTML, Markdown and formatted plain text. For more details, see Extract Formatted Text.

Here are the steps to extract a text from EPUB e-book as HTML:

The following example shows how to extract a text from EPUB e-book as HTML:

// Create an instance of Parser class
try (Parser parser = new Parser(Constants.SampleEpub)) {
    // Extract a formatted text into the reader
    try (TextReader reader = parser.getFormattedText(new FormattedTextOptions(FormattedTextMode.Html))) {
        // Print a formatted text from the e-book
        System.out.println(reader.readToEnd());
    }
}

More resources

GitHub examples

You may easily run the code above and see the feature in action in our GitHub examples:

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