I have a PDF file (4.6MB) which was made by combining 6 different PDFs (containing both text and bitmap graphics) using pdftk in Ubuntu 12.04. I wish to compress this file to something close to 2MB without affecting its quality.
I have tried pdftk's "compress" option (couldn't compress it to 2 MB), also tried converting it to ps first and than back to pdf, it gives the following warning:
****Warning: considering '0000000000 XXXXX n' as a free entry.
and then hangs. qpdf also failed saying that the file is damaged.
Could someone help me out?
has this pdf file reserved infos? If it has no confidential data it would be interesting to see
anyway many times where qpdf fails, Multivalent works
you can try to use its Compress tool (it also attempts to repair pdf file)
Multivalent
java -cp path....to/Multivalent.jar tool.pdf.Compress file.pdf