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Conversion tif, dwg dgn to pdf
Posted: Tue Oct 20, 2015 11:28 am
by AutoCadConverter
Hi Experts,
I have the following requirement and need your help.
1. I I am converting tif to pdf via the command line. The PDF file as output is rather too large. How can I reduce this to be the same size but without any reduction in quality?
2. I want to convert DWG and DGN files to PDF as well. Do I need a plugin to do this?
3. More questions to come.
Your help is appreciated heaps.
Thanks.
Re: Conversion tif, dwg dgn to pdf
Posted: Tue Oct 20, 2015 4:36 pm
by cday
AutoCadConverter wrote:I am converting tif to pdf via the command line. The PDF file as output is rather too large. How can I reduce this to be the same size but without any reduction in quality?
Do you have the NConvert Help file? If necessary, you can create a listing using this code:
To reduce the size of the PDF output file, you'll need to apply a suitable compression option depending on the bit-depth of the TIFF images you are converting; if the images are 1-bit black and white, or can be converted to 1-bit without loss, 'Fax' compression should be optimal and can be added using this code:
If the bit depth of the input image is 8-bit or 32-bit JPEG compression will normally minimise the output file size, but as a lossy compression method could potentially degrade the output image, especially if too much compression is applied, as you probably already know...
With optimal compression the PDF file created should be only marginally larger than the input TIFF file, or actually smaller if the TIFF file is not optimally compressed.
AutoCadConverter wrote:I want to convert DWG and DGN files to PDF as well. Do I need a plugin to do this?
DWG is listed as a supported file type (no plug-in required) but not DGN...
Re: Conversion tif, dwg dgn to pdf
Posted: Tue Oct 20, 2015 9:49 pm
by AutoCadConverter
Thank you very very much for your help.
Can I please ask:
I tried converting to pdf from dwg and it gave me an error.
The command was similar to the the one I wrote for TIF to PDF
The commands I used were:
nconvert -out pdf *.dwg -
nconvert -c 1 -out pdf *.dwg
First I got a warning that had status message 65534
and it also said Error: Can't read _____.dwg (There is only one file in the folder)
Also because I have so many TIF files to convert, I don't really want to open them all to verify.
The command -c 1: Will that completely remove all the color in the TIF? I mostly have BlacknWhite TIFs but there definitely a few color ones too.
Thanks so much for your help.
Re: Conversion tif, dwg dgn to pdf
Posted: Tue Oct 20, 2015 10:17 pm
by cday
AutoCadConverter wrote:I tried converting to pdf from dwg and it gave me an error.
The command was similar to the the one I wrote for TIF to PDF
The commands I used were:
First I got a warning that had status message 65534
and it also said Error: Can't read _____.dwg (There is only one file in the folder)
I'm not familiar with the DWG format, possibly someone else can help.
I don't know if you might possibly require GhostScript to be installed (same x32 or x64 as the NConvert version you are using), or whether there might be different DWG format versions??
AutoCadConverter wrote:Also because I have so many TIF files to convert, I don't really want to open them all to verify.
The command -c 1: Will that completely remove all the color in the TIF? I mostly have BlacknWhite TIFs but there definitely a few color ones too.
If the files you load are mixed bit depths I'm not sure what the effect will be without testing it. 'Fax' compression is certainly specific to 1-bit depth images, but if you want to maintain the bit depth of images that aren't 1-bit I think it would probably be necessary either to separate them and then apply the optimal compression method to each, or possibly alternatively use more advanced scripting to test the bit depth, if that is possible, and then process each file appropriately.
Could you please post any
new threads under the NConvert heading of the forum.
Re: Conversion tif, dwg dgn to pdf
Posted: Tue Oct 20, 2015 10:36 pm
by cday
If you do need to process files with mixed bit depths, another option would be to use a compression method that is applicable to any bit depth such as LZW, if the resulting file sizes are acceptable.
Re: Conversion tif, dwg dgn to pdf
Posted: Wed Oct 21, 2015 4:00 am
by XnTriq
cday wrote:I'm not familiar with the DWG format, possibly someone else can help.
The AutoCAD formats are not “natively” supported by XnView and NConvert. For converting DWG files, a 3rd-party I/O plug-in is required which isn't included in the “Minimal” and “Standard” but in the “Extended” download package of XnView. The plug-in is also available as a separate download from
xnview.com and
cadsofttools.com.
Re: Conversion tif, dwg dgn to pdf
Posted: Wed Oct 21, 2015 7:54 am
by AutoCadConverter
Thank you soo much!
I will ask my IT friend to help me install this and will try my first ever batch conversion of DWG files.
I will come back with update.
Thank you very much again.
Re: Conversion tif, dwg dgn to pdf
Posted: Wed Oct 21, 2015 8:05 am
by AutoCadConverter
XnTriq wrote:cday wrote:I'm not familiar with the DWG format, possibly someone else can help.
The AutoCAD formats are not “natively” supported by XnView and NConvert. For converting DWG files, a 3rd-party I/O plug-in is required which isn't included in the “Minimal” and “Standard” but in the “Extended” download package of XnView. The plug-in is also available as a separate download from
xnview.com and
cadsofttools.com.
Again Thank you.
I just read the other posts and saw that we have to pay 10Euros. I am fine with that but can you please tell me if :
The DWG files will be converted to PDF like for like. A0 size to A0 size pdf , A3 to A3 and so on.
Some of my DWG files are really old and when converting there usually is a line problem, which gets fixed when I change the line weight settings. Will I be able to overcome this?
Re: Conversion tif, dwg dgn to pdf
Posted: Wed Oct 21, 2015 4:45 pm
by XnTriq
AutoCadConverter wrote:I just read the other posts and saw that we have to pay 10Euros. I am fine with that but can you please tell me if :
The DWG files will be converted to PDF like for like. A0 size to A0 size pdf , A3 to A3 and so on.
Some of my DWG files are really old and when converting there usually is a line problem, which gets fixed when I change the line weight settings. Will I be able to overcome this?
I'm afraid I can't give you a definitive answer.
It's possible to specify a
Maximum Width or Height of Drawing in pixels with the “CADSoftTools plugins Manager”, but there's no DPI setting.
Re: Conversion tif, dwg dgn to pdf
Posted: Wed Oct 21, 2015 10:13 pm
by AutoCadConverter
XnTriq wrote:AutoCadConverter wrote:I just read the other posts and saw that we have to pay 10Euros. I am fine with that but can you please tell me if :
The DWG files will be converted to PDF like for like. A0 size to A0 size pdf , A3 to A3 and so on.
Some of my DWG files are really old and when converting there usually is a line problem, which gets fixed when I change the line weight settings. Will I be able to overcome this?
I'm afraid I can't give you a definitive answer.
It's possible to specify a
Maximum Width or Height of Drawing in pixels with the “CADSoftTools plugins Manager”, but there's no DPI setting.
Thank again for your help. It has been very valuable.
Could you please answer another question for me:
This is in regard to Tiff to PDF
If I want my PDF to have these settings:
Navigation Tab: Page only
Page Layout: Single Page
Magnification: Fit Page
How can I pass these parameters in my nconvert command?
At the moment the command -
nconver -c 1 -out pdf *.tif
achieves Navigation Tab: Page only, but how do I achieve the other settings?
Thanks again!
Re: Conversion tif, dwg dgn to pdf
Posted: Thu Oct 22, 2015 4:00 am
by XnTriq
AutoCadConverter wrote:If I want my PDF to have these settings:
Navigation Tab: Page only
Page Layout: Single Page
Magnification: Fit Page
How can I pass these parameters in my nconvert command?
As of now, XnView and NConvert don't have options for setting the viewer preferences of PDF documents.
I've been using
BeCyPDFMetaEdit (freeware) in the past for post-processing XnView's output. “As an alternative to the dialog-based user interface, the tool supports operating in batch mode (for usage in batch files or links).”
I don't have any hands-on experience with the
Reformat function of PlotSoft's free
PDFill PDF Tools which depend on Adobe Reader and GhostScript.
Re: Conversion tif, dwg dgn to pdf
Posted: Thu Oct 22, 2015 7:08 am
by AutoCadConverter
XnTriq wrote:AutoCadConverter wrote:If I want my PDF to have these settings:
Navigation Tab: Page only
Page Layout: Single Page
Magnification: Fit Page
How can I pass these parameters in my nconvert command?
As of now, XnView and NConvert don't have options for setting the viewer preferences of PDF documents.
I've been using
BeCyPDFMetaEdit (freeware) in the past for post-processing XnView's output. “As an alternative to the dialog-based user interface, the tool supports operating in batch mode (for usage in batch files or links).”
I don't have any hands-on experience with the
Reformat function of PlotSoft's free
PDFill PDF Tools which depend on Adobe Reader and GhostScript.
Thank you once again. You have been very kind and helpful!
Re: Conversion tif, dwg dgn to pdf
Posted: Thu Oct 22, 2015 5:00 pm
by XnTriq
AutoCadConverter wrote:Thank you once again. You have been very kind and helpful!
You're welcome
Re: Conversion tif, dwg dgn to pdf
Posted: Fri Oct 23, 2015 10:37 am
by AutoCadConverter
XnTriq wrote:AutoCadConverter wrote:Thank you once again. You have been very kind and helpful!
You're welcome
Can I please ask a last question:
If I want my output folder to be provided in the parameter
nconvert -c 1 -out pdf *.tif
Where do I place this parameter so that all my output goes to another folder?
Re: Conversion tif, dwg dgn to pdf
Posted: Fri Oct 23, 2015 12:00 pm
by XnTriq
AutoCadConverter wrote:Where do I place this parameter so that all my output goes to another folder?
Code: Select all
nconvert -c 1 -out pdf C:\Source\*.tif -o C:\Destination\%.pdf
Is that correct,
cday?
