Reducing Plot Size of Large PDFs

I have a large format plotter and a PDF that is 157 inches long x 36 inches wide. The plotter will handle the plot, but we do not need a plot that long. I need to reduce the plot size so that text is "readable" - I think about 50% will work.
However, I'm testing this on the plotter using Current View at different zoom scales so that I don't waste paper.
The problem I've run into is that the zoom scale on the screen and the zoom scale on the paper are not matching up. The "Current View with Fit to Printable Area" plot looks more like 25% on paper, rather than 50%. Setting the view on the screen to 100% gives me a 51%. See the attached images. The 1st, with the "Units: Inches Zoom: 51%" is for the 100% zoom on the screen. The 2nd, with "Units: Inches Zoom: 26%" is for the 50% zoom on the screen.
Is there a way in Acrobat 9.5.2 Pro to set a definite zoom scale for plotting? Shouldn't I be able to use the slider bar under the Preview? I am not able to adjust it at all.
Given the length of the plot, tiling is not appropriate.

Use the pdf optimizer and choose exactly which features you want to use to reduce the file size. You get much more control with the optimizer.

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PDF Reduce File Size makes certain pdfs HUGE

Generally reduce file size works great for me but certain files, those coming from someone using Microsoft Publisher in particular, result in larger pdfs. She sends me newsletters for a website and sometimes the 3 page pdfs are 2-4mb. I tried opening in Preview and re-saving them using the Reduce File Size filter and the result is that they ballon up to 50-100mb!! Info for the file reveals that the pdf producer is GPL Ghostscript 8.15 and the content creator is PScript5.dll Version 5.2.2. I seem to be able to open and reduce file size using Acrobat so I'm not quite sure why Preview is choking on them.

geekinthegarden wrote:
Generally reduce file size works great...
Microsoft Publisher...Ghostscript...PScript5.dll
I seem to be able to open and reduce file size using Acrobat so I'm not quite sure why Preview is choking on them.
Hi geekinthegarden- This does not surprise me. There are many variations and reiterations in specifications of the PDF format.
Going from Ghostscript language interpreter, to Apple in rendering could introduce complications which we will not be able to sort out in this forum encapsulating a complete description of a fixed-layout 2D documents that includes the text, fonts, images, and 2D vector graphics which compose the documents.
Suffice to say it is not a perfect science.
Print PDF has a compress PDF file option as well as ColorSynch in your /Utilities folder +reduce file size+ option for PDF's. This may or may not be of use.
You found your workaround using Acrobat, this is part of the value of having more than one PDF viewer, good computing!

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I have been trying to reduce the size of a PDF, using the Save As > Optimized PDF method.
I have also tried Save As > Reduced Size PDF.
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Part of the problem here is that the files that are produced when I run the script to output files from layer comps are very big.
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m spires wrote:
i have already re-set the settings on my scanner / printer to try to get the smallest dpi & image possible.
You may need to reset that to use higher scan quality for successful OCR.

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Rik Ramsay wrote:
To expand a little on what Jongware said, normally choosing vector over bitmap will decrease the filesize. If the vector art is very complex though, this will not be true.
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Hello
For pdf size,you can compress the pdf size if you want to reduce the size of the pdf files.
Here is the code to do it:
using System.IO;
using System.Drawing.Printing;
using RasterEdge.Imaging;
using RasterEdge.Imaging.Codec.Compression;
using RasterEdge.Imaging.PDF;
DocumentCompression.infile(@"C:\1.pdf");
DocumentCompression.Outfile(@"C:\2.pdf");
DocumentEncoder = DocumentEncoder.Group3Encoding
RasterEdgeImaging Document = new RasterEdgeDocumentg();
Image. DocumentCompression(@"C:\1.pdf", "C:\2.pdf", DocumentEncoder DocumentEncoder.Group3Encoding);

How to reduce the size of the pdf file?

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Thank you for the help,
Best
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You have two options:http://www.screencast.com/t/p3srGDGP
In this screen shot I have two method chosen.
the one highlighted in yellow is more effective, except in the case where the pdf was from a Scan which is graphics only.
select the one in yellow first and click on Fonts. Remove all duplicates. for some reason, I don't know if its defect in Acrobat, but usually multiple copies of the exact Font will show up and some cases there will font families not even used in your document. remove all duplicates.
Note: Duplicates do not mean for example: Helvetica, Helevetica Bold, Helvetica Bold Italic (these are three different fonts).
You can reduce the quality of the graphics used and so on while in menu.
The feature highlighted in green more or less just reduce the general qaulity of the PDF. and may work for some PDF's

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I have exported a pdf (our college mag) at smallest file size from Indesign CS4 for online use. The problem is the resultant file size is a little under 19Mb. Using both or either Reduce File Size or Optimise functions simply result in an increase to 22Mb. The document is packed with images however I would have thought one or both of these processes would have helped reduce the file size to a more manageable download file size.
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You might want to do an audit of the PDF (button in PDF Optimizer) and try to figure out what the various parts are. It shows 58% is content streams (sorry, but I am not sure what that is), 26% is overhead, and only 12.7% is graphics. Since you are not storing bookmarks and such, you might want to try going back to ID and printing to the Adobe PDF printer for a comparison. It may be one technique is more efficient than the other.
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You are sending public messages, don't worry about that. It's working fine. Now, rather than trying to share screen shots and send PDFs, please focus on answering ALL of my questions. Thanks. I will recap. If any of the questions don't make sense, just say so. We need to stay focussed, not go off on a tangent.
- the size in pixels and inches (or mm) for your photos.
- what app you use for layout
- What is the EFFECTIVE resolution you are using for your images (not the original ppi, but adjusted for layout size)?
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Reducing Plot Size of Large PDFs

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