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Convert PDF to Image ​

Overview ​

ComPDFKit Conversion SDK provides an API for converting PDF to images. Integrate ComPDFKit Conversion SDK to your apps to convert PDF into images easily.

Setting Image Formats ​

In ComPDFKit Conversion SDK, supported image formats include:

  • JPG
  • JPEG
  • PNG
  • BMP
  • TIFF

Setting Image Color Modes ​

Supported image color modes in ComPDFKit Conversion SDK include:

  • Color: Color mode, where the image effect is consistent with the original PDF page.
  • Gray: Grayscale mode.
  • Binary: Black and white mode, which applies binarization to the original effect.

Setting Image Scaling ​

The SDK supports setting image scaling. The default scaling is 1.0, which maintains the original PDF page size. If you want to double the image size, you can setImageScaling to 2.0; similarly, to reduce the image size by half, setImageScaling to 0.5.

Enhancing Image Path Display ​

The SDK supports an option called image_path_enhance for enhancing the display of image paths. This option can be enabled when you want to enhance the display effect of paths within the PDF page.

  • Not enable image_path_enhance option(original PDF rendering effect): image-20250603162605558
  • Enable image_path_enhance option: image-20250603162651769

Notice ​

  • A higher imageScaling value results in images with higher resolution, but it also increases memory usage and slows down the conversion.
  • A higher imageScaling value does not necessarily equate to higher clarity; the clarity also depends on the original image resolution in the document.

Sample ​

The following complete example code demonstrates how to convert a PDF document into PNG format.

kotlin
val inputFilePath = "***";
val password = "***";
val outputFileName = "***";

val imageOptions = ImageOptions();
val error = ComPDFKitConverter.startPDFToImage(inputFilePath, password, outputFileName, imageOptions);