Subset fonts Leave feedback
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Not optimized files may contain embedded fonts. GroupDocs.Viewer can remove unused instructions in embedded fonts to reduce the file size.
To subset fonts in a PDF file, set the subset_fonts property to True.
The following code snippet shows how to subset fonts in a PDF file:
from groupdocs.viewer import Viewer
from groupdocs.viewer.options import PdfViewOptions, PdfOptimizationOptions
def subset_fonts():
# Load document
with Viewer("sample.docx") as viewer:
viewOptions = PdfViewOptions("subset_fonts/subset_fonts.pdf")
viewOptions.pdf_optimization_options = PdfOptimizationOptions()
viewOptions.pdf_optimization_options.subset_fonts = True
viewer.view(viewOptions)
if __name__ == "__main__":
subset_fonts()
sample.docx is the sample file used in this example. Click here to download it.
The following image demonstrates the result. There is no difference in appearance:
But there is the significant difference in size:
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