Created PDF files are HUGE!!!

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mrjacoby1
Posts: 19
Joined: Mon May 19, 2014 7:35 pm

Created PDF files are HUGE!!!

Post by mrjacoby1 » Mon May 19, 2014 7:40 pm

I bought Xnview a couple months ago, for the sole purpose of translating .CAL files into .PDF files. One of our customers insists on sending us blueprints in .CAL format.

The translation works OK, except the PDF files the XnView software creates are extremely large --- in the neighborhood of 75Mb. This from a .CAL file that was about 250Kb.

Any idea why this is happening and how it can be prevented? A 20 page blueprint that should take up about 2 Mb of space on our network is instead taking up 2 Gb of space.

mrjacoby1
Posts: 19
Joined: Mon May 19, 2014 7:35 pm

Re: Created PDF files are HUGE!!!

Post by mrjacoby1 » Mon May 19, 2014 7:53 pm

Found something useful on the board (BTW, searching for the letters "PDF" returns zero results in this forum. I had to search for "Adobe" in the hopes that PDF might be included in some posts . It was.)

Anyway, I cahnegd the compression type in Tools > Otptions > Write PDF to FAX compression. The PDF file size is much more reasonable now.

cday
XnThusiast
Posts: 2226
Joined: Sun Apr 29, 2012 9:45 am
Location: Cheltenham, U.K.

Re: Created PDF files are HUGE!!!

Post by cday » Mon May 19, 2014 9:16 pm

Uncompressed TIFF files are normally very large, and the optimum compression method to use in a particular case depends on whether the image is colour, grayscale or black and white. For black and white images 'Fax' -- CCITT G4 -- is generally optimum and can actually produce very small file sizes.
mrjacoby1 wrote:... searching for the letters "PDF" returns zero results in this forum
For some reason the phpBB format doesn't return results for three-character strings, which is particularly unfortunate for computing topics where file formats are usually three-characters...

A possible workaround is to use a Google search and to include 'xnview' in the search terms: that has often produced useful results for me.

cday
XnThusiast
Posts: 2226
Joined: Sun Apr 29, 2012 9:45 am
Location: Cheltenham, U.K.

Re: Created PDF files are HUGE!!!

Post by cday » Tue May 20, 2014 9:50 pm

Update:

http://newsgroup.xnview.com/viewtopic.p ... 38#p119738
XnTriq wrote:
cday wrote:
mrjacoby1 wrote:... searching for the letters "PDF" returns zero results in this forum
For some reason the phpBB format doesn't return results for three-character strings, which is particularly unfortunate for computing topics where file formats are usually three-characters...
This is due to a limitation in MySQL. The forum's search backend has now been switched from Fulltext mysql to Fulltext native, and the search index has been updated.
Thanks, that should be very useful... :D

The Forum search facility now supports searches for three-character terms... :D :D

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