Extract images from document page Leave feedback
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GroupDocs.Parser provides the functionality to extract images from a document page by the getImages(int) method:
parser.getImages(pageIndex) // returns Iterable<PageImageArea> or null
This method returns a Java Iterable collection of PageImageArea objects:
| Member | Description |
|---|---|
getPage() | The page that contains the image. |
getRectangle() | The rectangular area on the page that contains the image. |
getFileType() | The format of the image. |
getRotation() | The rotation angle of the image. |
getImageStream() | Returns the image stream (java.io.InputStream). |
getImageStream(ImageOptions) | Returns the image stream in a different format. |
save(String) | Saves the image to the file. |
save(String, ImageOptions) | Saves the image to the file in a different format. |
The ImageOptions class is used to define the image format into which the image is converted. The following image formats (ImageFormat) are supported:
BmpGifJpegPngWebP
Here are the steps to extract images from the document page:
- Instantiate the
Parserobject for the initial document; - Call
parser.getFeatures().isImages()to check if images extraction is supported for the document; - Call the
getImages(int)method with the page index and obtain the collection ofPageImageAreaobjects; - Iterate through the collection and get sizes, image types and image contents.
The following example shows how to extract images from each document page:
const groupdocs = require('@groupdocs/groupdocs.parser');
// Create an instance of Parser class
const parser = new groupdocs.Parser('images.pdf');
try {
// Check if the document supports images extraction
if (!parser.getFeatures().isImages()) {
console.log("Document doesn't support images extraction.");
} else {
// Get the document info
const documentInfo = parser.getDocumentInfo();
const pageCount = documentInfo.getPageCount();
// Iterate over pages
for (let pageIndex = 0; pageIndex < pageCount; pageIndex++) {
// Print a page number
console.log(`Page ${pageIndex + 1}/${pageCount}`);
// Iterate over images
// We ignore null-checking as we have checked images extraction feature support earlier
const it = parser.getImages(pageIndex).iterator();
while (it.hasNext()) {
const image = it.next();
// Print a rectangle and image type
console.log(`R: ${image.getRectangle()}, Type: ${image.getFileType()}`);
}
}
}
} finally {
parser.close();
}
process.exit(0);
The output for images.pdf:
Page 1/2
R: (342.3999938964844; 233.83001708984375) (247.9499969482422; 164.8800048828125), Type: JPEG Image (.jpeg)
R: (342.3599853515625; 244.08001708984375) (248.0399932861328; 6.71999979019165), Type: JPEG Image (.jpeg)
R: (411.95001220703125; 626.4799957275391) (153.75; 102.41999816894531), Type: JPEG Image (.jpeg)
R: (411.9599914550781; 631.4400024414062) (153.72000122070312; 1.440000057220459), Type: JPEG Image (.jpeg)
Page 2/2
R: (85.05000305175781; 509.010009765625) (256.0199890136719; 204.75), Type: JPEG Image (.jpeg)
R: (392.54998779296875; 183.04998779296875) (191.10000610351562; 126.3499984741211), Type: JPEG Image (.jpeg)
Along with the full-featured library we provide simple but powerful free Apps.
You are welcome to extract data from PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, Emails and more with our Free Online Document Parser App.
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