Difference between revisions of "PDF"

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(Created page with "Category: Hacks Category: PDF == Reduce the size of a PDF file consisting of scanned images == It is wise to scan documents at the highest resolution possible as downsamp...")
 
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Assuming we have a PDF with images scanned at 600dpi and I want to downsample it to 150dpi and use JPEG compression at a ratio of 80% for sending it via mail.
Assuming we have a PDF with images scanned at 600dpi and I want to downsample it to 150dpi and use JPEG compression at a ratio of 80% for sending it via mail.
convert -density 150x150 -compression jpeg -quality 80 INPUT.pdf OUTPUT.pdf
convert -density 150x150 -compression jpeg -quality 80 INPUT.pdf OUTPUT.pdf

== Convert images to PDF documents ==
Assuming you have a few images laying around that need to be converted to a PDF with a paper size in DIN A4.
convert -page A4 -density 150x150 -compress jpeg -quality 80 INPUT01.tif INPUT02.tif INPUT03.tif OUTPUT.pdf

Revision as of 20:19, 25 April 2012

Reduce the size of a PDF file consisting of scanned images

It is wise to scan documents at the highest resolution possible as downsampling can be done at any point. The fastest way I found so far the tools of the ImageMagick suite or with GhostScript.

Assuming we have a PDF with images scanned at 600dpi and I want to downsample it to 150dpi and use JPEG compression at a ratio of 80% for sending it via mail.

 convert -density 150x150 -compression jpeg -quality 80 INPUT.pdf OUTPUT.pdf

Convert images to PDF documents

Assuming you have a few images laying around that need to be converted to a PDF with a paper size in DIN A4.

convert -page A4 -density 150x150 -compress jpeg -quality 80 INPUT01.tif INPUT02.tif INPUT03.tif  OUTPUT.pdf