1. GroupDocs Documentation
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    3. GroupDocs.Viewer Product Family
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    5. GroupDocs.Viewer for Python
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    7. Developer Guide
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    9. Render documents
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    11. Render to PDF
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    13. Optimize the output PDF file
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    15. Optimize images
    16. /
    17. Reduce image quality

    Reduce image quality

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    If the output PDF file contains images, you can reduce its size using image compression.

    To enable image compression, set the compress_images property to True. The GroupDocs.Viewer compresses all images in the file.

    The image_quality property determines the compression ratio. It is a quality value in percent. 100% means original quality.

    The following code snippet shows how to compress images in the file:

    with gv.Viewer("sample.docx") as viewer:

    viewOptions = gvo.PdfViewOptions()
    viewOptions.pdf_optimization_options = gvo.PdfOptimizationOptions()
    viewOptions.pdf_optimization_options.compress_images = True
    viewOptions.pdf_optimization_options.image_quality = 50

    viewer.view(viewOptions)

    The following image demonstrates the result:

    Reduce image quality

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