Design Review

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dmiller
Posts: 108
Registered: ‎09-21-2006
Message 1 of 4 (398 Views)

DWF file size

398 Views, 3 Replies
11-13-2013 09:12 AM

When I convert a scanned PDF to DWF the file size balloons as much as 5 times.  Whether I print to DWF using the DWF writer for 2D printer driver or open the PDF in Design Review 2013 and save as DWF or DWFx makes no difference.

 

Is there a better way or are we stuck with multimegabyte files when I could stick with PDF and keep it under 1Mb per file?

 

Thanks,

David Miller

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pendean
Posts: 23,364
Registered: ‎11-06-2003
Message 2 of 4 (388 Views)

Re: DWF file size

11-13-2013 04:38 PM in reply to: dmiller

There is no relationshhip between those file types: it's content and your output (and perhaps even the lackluster driver being used to create the other format) that controls files sizes.

Scanned PDFs are a huge collection of points (your drawing plus "noise". DWF triesd to create Vector files, so each point is actually a point, taking up code space in the file definition. A billion points bulk up file size more than one continous line of the same length.

 

PDF= standard paint brush.

DWF= super fine pointed pen.

Dean Saadallah Blog | Facebook | Google+ | Twitter | PINS
Contributor
dmiller
Posts: 108
Registered: ‎09-21-2006
Message 3 of 4 (381 Views)

Re: DWF file size

11-13-2013 06:44 PM in reply to: pendean

My understanding of the DWF format is that it is based on the ISO 29500 Open Document format which is basically a ZIP file collection of objects which can include graphics such as PNG, BMP, etc.  Seems to me a PDF to DWF conversion would be mostly just a repackaging, not something requiring a 5:1 size expansion,  Are you saying it is really trying to convert raster data to vector?  Are the PDF graphics being converted to a graphics memory hog format like BMP instead of something more efficient like PNG?  If so then I'll just stick with PDF.  I had hoped I could use DWF to leverage the built in markup capabilities of Vault and Design Review without having to switch to Acrobat during change order reviews.

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pendean
Posts: 23,364
Registered: ‎11-06-2003
Message 4 of 4 (369 Views)

Re: DWF file size

11-14-2013 04:52 AM in reply to: dmiller
You might want to ask in the VAULT forum how other VAULT users handle your issues: I bet you're not the first (or last) :smileyhappy:
Dean Saadallah Blog | Facebook | Google+ | Twitter | PINS
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