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How to set brightness of the pdf document


Our customer converts the document from pdf to pdf/a but he complains about brightness of the document. I searched a bit and found out Brightness property is in the TiffSettings. But My input documents can be doc,docx, pdf, xls etc… So the output is pdf/a and I need to configure brightness for the output (pdf/a)

how can I set light-dark values for the output?



Thank you for contacting support.

Would you please share the source and generated files with us along with the code snippet that you are using for this conversion. However, Aspose.PDF API mimics the behavior of Adobe Acrobat which does not let us change brightness of any document. Likewise Aspose.PDF does not make any changes to brightness of documents. So, I am afraid that you may not change any values to make a document lighter or darker.