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.
Binary file (PDF, 344 KB)
The following image demonstrates the result. There is no difference in appearance:
But there is the significant difference in size:
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