[Qgis-user] PDF output - file size

[Ryan Brook (Perth)]

Hi Tony,



Consider using multiply blending mode for your map in the rendering menu of item properties.

This will lose transparency but reduce file size (could be an order of magnitude decrease if you have many raster layers loaded).



[cid:image001.png at 01D66861.B931BF90]



Not sure if the simplify geometries option will help you:

[cid:image002.png at 01D66862.4BC39180]



Regards,

Ryan

-----Original Message-----
From: Nyall Dawson <nyall.dawson at gmail.com>
Sent: Friday, 31 July 2020 7:26 AM
To: Tony Shepherd (FarmMaps NZ) <tony at farmmaps.nz>
Cc: qgis-user <qgis-user at lists.osgeo.org>
Subject: Re: [Qgis-user] PDF output - file size



On Fri, 31 Jul 2020 at 09:20, Tony Shepherd (FarmMaps NZ) <tony at farmmaps.nz<mailto:tony at farmmaps.nz>> wrote:

>

> Hi All

>

>

>

> Hope all is well.  I’m really liking QGIS 3.14!!

>

>

>

> I have a question re the file size of PDF outputs.  Since upgrading to 3.14, the file size of PDF outputs seems to have grown by a substantial amount.  If I have SVG or font marker fills, even more so.  An A3 map, typically was 5mb or so, now it is outputting at close to 30mb.  Id then normally use Acrobat to compress and get it down a bit without losing any discernable quality (but retain geo info), but even then it's still over 20mb.



Previously svg or font marker fills were exported as raster patterns, which resulted in a loss of quality when the PDFs were printed or zoomed in to. Since 3.14 we now output marker fills using vector artwork wherever possible, in order to avoid this loss of quality.



> How do others deal with this issue?  Is there anywhere that I can have some control over the DPI of the output etc, much like the old days when we hade Acrobat installed as a stand-alone printer driver?



There's no option for this in current versions, but it's worth filing a feature request!



Nyall



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