have Adobe Acrobat DC (12) pro license+media. Need Acrobat 9 for max. compression

Question

Hi forum,I have a computer which lost Adobe Acrobat 9 Std. in an upgrade to Win10. Missing both media and license, it was decided to purchase the latest Adobe Acrobat version; 12 / DC. I have installed it on the computer and it works fine, but there is a problem:The license is basically used to compress pdf files using the pdf printer with 'max compression' enabled. The reason is the pdf files are to be transmitted over satellite, so size DOES matter here...We still had another computer running Adobe Acrobat 9, so it was easy to compare the compression of vs. 9 and 12 / DC. Version 12 is between 40-60% worse at compression. My response was to download Adobe Acrobat 9 from 'Download Acrobat 8 and Acrobat 9 ' but i receive an 'Invalid serial' when I try to use 12/DC key. I thought you could use previous versions but that does not seem to be the case? Is there a previous version i can use here? The license is:Acrobat Professional Product Version 12.0, purchased as an Education license/non profit usageAlternatives?:1.  have tried numerous online pdf compressors with similar poor results compared to Acrobat 9, it seems like it is the only tool able to achieve text (pictures are removed) compression of 50%+2. Besides selecting 'Max compression', dpi 72 and removed meta tags and embedded fonts, the rest of the configuration in vs. 12 is set to default as this was the configuration in vs. 9. If you can point to other settings in vs. 12 that can improve compression, please adviseBest regards and thanks in advanceJohn Heinonen

johnHeinonen · Accepted Answer

An update from me regarding the problem. I talked to Adobe Support Chat, which confirmed that I cannot use the Adobe Acrobat Pro DC / version 12 on any of the installation binaries from Adobe homepage. Simply because Acrobat vs. 9 is no longer supported. I received some URL from the support which actually worsened the file size when using save as with the optimize function, compared to the save as pdf from Word:

https://helpx.adobe.com/acrobat/using/optimizing-pdfs-acrobat-pro.html

https://helpx.adobe.com/acrobat/using/saving-pdfs.html#reduce_file_size_by_saving

But that made me go back to the Print to pdf function as I noticed there are many more options to tweak on to improve the file size. After reading the above articles, and tweaking around on the print feature, I managed to compress pdf files even better than version 9, Mission Accomplished :-)

Thanks for your input all :-)

Kurt1949 · Answer

Print to PDF reduced a 173 mb file to 32 mb for me.

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