Can using "Reduce File Size" in Acrobat Standard 9 effect DPI

I'm sure the answer is no to this question, but before I wholeheartedly recommend this fantastic tool for use throughout our firm, I need to know if there is the possibility of a PDF's functional DPI being reduced in a scanned PDF by using Reduce File Size. What I mean, I guess, by functional DPI, is the DPI in the PDF after running the tool. Courts require 300 dpi on scanned PDFs, which is our standard, but once in a PDF it's impossible to determine (as far as I can tell) DPI in a file. I notice no reduction in quality when using this tool, but want to make sure that we aren't circumventing court guidelines when using it to help reduce the size of files scanned at 300 dpi.

Hi Anoop,
I can share the graphic file, but not the pdf which contains it (as it contains confidential information) - thanks!

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Reduce File Size in Acrobat Pro (9.5.5) Corrupts Graphics in PDF Documents - shows up as black image

Whenever I use Reduce File Size in Acrobat Pro (9.5.5), sometimes some of the images (not all) get corrupted and show up as a black image in the new document.
Actually, the new reduced document looks okay when viewed in Acrobat, but the problem shows up when viewed in the Preview application on the Mac.
I'm using Acrobat 9.5.5 with Mac OS 10.8.6
I've tried re-importing the graphic into a new graphic box, which didn't work. Thinking there may be some type of corruption with the actual graphic file, I then tried viewing the graphic, then taking a screenshot of it to create a completely new file, and then re-importing the new graphic file into the original document (created in Adobe In Design 5.0.4). I then export the new document as a pdf, and brought it into Acrobat Pro to do the Reduce File Size. Same thing happens - black box appears where the graphic was.
I then tried using the Reduce File Size within the Save As function of the Preview application on the Mac - while the graphic remains intact, many of the other graphics in the document are "reduced" too much, to the point where the image quality is seriously degraded, and therefore not usable.
Any other ideas?

Hi Anoop,
I can share the graphic file, but not the pdf which contains it (as it contains confidential information) - thanks!

Making a interactive PDF from indesign, but it's too big. Tried to reduce file size in Acrobat, but

Making a interactive PDF from indesign, but it's too big. Tried to reduce file size in Acrobat, but it does not reduce file size.

Use the Optimize PDF command in Acrobat, it gives you more control. I think it's under the Advanced menu in Acrobat 9 Pro and File > Save As > Optimized PDF in Acrobat X Pro.
You might try playing around with different settings. You can also click the Audit Space button at the upper right to see if its from images or other things causing the file size problem.
Unfortunately, InDesign doesn't write interactivity in a very optimized way. You get better results with buttons, for example, creating them in Acrobat Pro and using the Duplicate command to duplicate them across multiple pages.

Issues in Reducing file size on Acrobat 9.3.1

The text has been merged or split on Acrobat 9.3.1 Pro by using the option "Reduce File Size" or "PDF Optimizer". There is no issue in the earlier version of Acrobat (7.0 & 8.0). We are using the Mac OS between 10.4.11 to 10.6.2. I have attached screenshots for your reference; please look at the Word "Issues" has been split after reducing file size on Acrobat 9.3.1. Is there any other way to do Hi-Res PDF to Low-Res PDF without any issue? Kindly help me out to sustain the best process in future.

I found a similar problem with text styled for small caps. It was fine in the original PDF, but became lowercase in the reduced file. The reduction process probably throws away characters from fonts that Acrobat decides are unnecessary.
I was able to partially solve the problem by combining multiple PDFs (book chapters) and selecting the smallest file size icon at the bottom of the page. Alternately, I chose a web-quality preset, which also worked. The file size might not be quite as small, but the files were good.

Images load really slow after using Reduce File Size...

After using the "Reduce File Size..." feature in Acrobat 9 on Windows Vista, some of the images load really slow as I page through the document. Is there some kind of compression setting that I should look for to prevent the images from be affected by this?
For some of my documents it will take 30 to 60 seconds to load an image. Sometimes I can't do anything with the document until the graphic loads entirely.

Can you post an example of a file that has this issue? Personally, I recommend using the PDF optimizer, it gives better control of the final pdf file.

What do I loose with "Reduce File Size" to Acrobat 8.0 compatability?

When scanning documents using the Acrobat interface in 9.0, I find that the file sizes are very large...about 1.5MB per page. If I then select the "reduce File Size" option from the Document tab, and select Acrobat 8.0 and later compatibility, the file size is reduced by 10 fold....to something approaching 150 KB per page. I don't see degradation of the scanned image on my screen....but am I loosing image quality?

I tried it at home & I used the optimize pdf thing. It went from 17MB to 12MB so I re-optimized it & got it down to 3MB. It's as good as it is going to get. The big problem is that the .pdf that I have was scanned on a copier machine.
I printed the 3MB pdf on the color printer & it came out okay, but then I printed it on the black & white printer & it barely had any ink on the page....
I am just going to not bother with it anymore. Not much I can do with a scanned document & it's not even my job to begin with!
Thanks Bill.
Jules

How to reduce file size in Acrobat XI?

How can I to reduce the file size is Acrobat XI Pro? Up until v.9, it was just a matter of opening the pulldown menu Documents > Reduce File Size. and then some more. How's that done in the newer versions of Acrobat?
This was simple and easy:

Works like a charm... I have a pdf file of a A1 size drawing that went from 6,7 to 1.7 Mb. The rendered image became slightly grainier (hardly noticable), but the text recognition stayed intact. Magnificent!
FYI I've tested this file size reduction in three different runs:
Save As Other... > Reduced Size PDF... (Acrobat 1.4 comp.) 1,69 Mb
Save As Other... > Reduced Size PDF... (Acrobat 1.6 comp.) 1,75 Mb
Save As Other... > Optimized PDF... 1,73 Mb

Reduce file size in Acrobat 7

Is there a way to automatically reduce the file size in acrobat 7 so that it is compatible with version 4? I would like to be able to do this automatically instead of having to go to File=>Reduce file size and downsizing each doc individually.
Any help would be greatly appreciated.

I have the exact same problem and I'm running 7.1.0 on XP. I've tried the detect and repair and no dice.
What's really annoying is that every 6 mos or so some functionality is 'lost' and I have to re-install Adobe and download/install the updates.
I know there are newer versions of Acrobat, but frankly, although I use Acrobat frequently, it is simply to PDF files (nothing fancy, straight PDF) and getting a newer version doesn't seem warranted.
My paranoid self is beginning to believe that Adobe has an 'expiry date' - i.e., it begins to self-destruct if you haven't upgraded in 2 years or more?
Don't expect a reply, just venting.

Reduce file size in Acrobat X

What is the best way to reduce file size? The Document menu is no longer an option. When I try to Save As... Reduced File Size or Optimized PDF, the program crashes.

We aren't Adobe. We're just users like you.
Regardless, this is something that requires Adobe Acrobat and not Adobe Reader. This is the Reader forum.

Reducing file size in Acrobat Pro XI

Created a 36 page PDF from 300ppi scans of pages of a large 1822 Bible, applied OCR, resulting file size was 53, 149 KB. Need to get it down below 20,000 KB. Used "Save as Other>File Size Reduce" and "Save as Other>Optimize." Set the latter to Reader X, and minimum size. Result was no reduction whatever in file size. What's wrong?

I have Acrobat Pro X - so I'm not sure if XI has this same feature, or if it's in the same location, but see if you can try this:
Tools > Document Processing > Optimize Scanned PDF
I use this a lot to reduce PDFs that won't reduce through a Save As.
Hope this helps.

REDUCE FILE SIZE with Acrobat Pro

Hi everyone!
I created a epk for a rock band with Illustrator then I created one pdf that contains the all three pages with Acrobat Pro (I downloaded the trial because it was just for this occasion) This epk is a pdf file with 3 pages, some pictures and hyperlinks.
I need to send the epk to the band and they want a reduced size one. The original is 8.3 M but obviously it's too big to be sent via email.
I have been trying with the option SAVE AS - REDUCED SIZE PDF but it doesn't work! Still the same size.
I am new to acrobat so maybe I am missing something.
HELP!
Thanks

Hi michelab,
You can also try choosing Save As > Optimized PDF. There are various settings in that dialog box that you can manipulate to bring down the file size. Here's the Help topic on that dialog box, with information about the various settings:http://helpx.adobe.com/acrobat/using/optimizing-pdfs-acrobat-pro.html
Please let us know how it goes.
Best,
Sara

Cannot reduce file size in Acrobat X due to "image masks"

Occasionally, when I try to reduce the file size of a PDF file in Acrobat X, I am getting the error message that the file was not re-rendered because of "image masks".
What precisely does this mean? How are image masks created in the PDF production process and how do I avoid them going into the file?
In this case, it was a simple Word document including a text and two semi-transparent GIF images on top of each other placed behind the text.
Any help would be appreciated!

Try to flatten the pdfs that should get rid of the masks (use Preflight tools).

Reduce file size with action wizard

(German version below)
Hey,
I got two questions for action wizard in Acrobat XI Pro.
I try to reduze file size of many PDFs using acion wizard. My tests worked fine but now I got some problems I try to explain now:
1. I add a directory with many subdirectorys to my process list. Adobe now adds not only PDFs to my list, it also adds JPGs, DOCs etc. That means I have to delete every single file I not want to convert to PDF cause I only want to reduce file size of excisting PDFs. Is there any possibility to only add PDFs in my processing list?
2. If a PDF is opend by any other user I get a information about it. This info I need to acknowledge every time it pops up cause my process interrups. Is there any possibility to ignore this info?
I´m happy for any help i can get here. Thx.
Regards
(Sorry for bad english, it´s not my favorite language )
Hallo Leute,
ich benötige Hilfe beim Benutzen des Aktionsassistenten im Acrobat XI Pro.
Ich versuche bei sehr vielen PDFs die Dateigröße zu verringern. Dazu habe ich mir eine Stapelverarbeitung per Aktionsassistent erstellt die bei meiner Testumgebung auch super funktioniert. Leider habe ich noch einige Probleme für die ich Hilfe benötige:
1. Wenn ich einen Ordner mit sehr vielen Unterordnern und verschiedenen Inhalten einfüge möchte ich eigentlich nur die PDFs verarbeiten. Leider fügt Acrobat auch alle JPGs DOCs etc. hinzu. Ich muss also alle unerwünschten Dokumente herausfiltern, da auch keine sortierung vorhanden ist. Bei mehreren Tausend Dokumenten nicht leistbar. Gibt es hier eine Möglichkeit nur PDFs in die Stapelverabeitung aufzunehmen?
2. Sollte die Verarbeitung mal laufen kommt es hin und wieder vor das die PDFs durch einen Benutzer geöffnet sind. Ich bekommen hier eine Meldung von Acrobat die ich erst bestätigen muss bevor es weiter geht. Da das Programm eigentlich über mehrer Tage/Wochen im Hintergrund laufen soll passt mir das gar nicht wenn ich alle Stunde überprüfen muss ob die Stapelverabeitung noch läuft.
Ich hoffe es gibt jemanden der mir helfen kann. Ich bin über jede hilfreiche Antwort glücklich.
Gruß

For starters, let's refer to your original post: "this is indeed a serious problem and step back in functionality..." This statement is a quite ridiculous assertion, unnecessarily dramatic, wholly inaccurate, and unhelpful. Your statement "is this a joke" and "I know Acrobat tends to choke...etc..." is just pure gibberish and polemical. It is quite easy to feed any application enough data to cause a performance failure, but one would really need to question one's motive and prudent use of one's time at this point - unless you are tasked with stress and load testing the software to determine minimum working requirements.
'Batch Processing' is, since Acrobat 9.x, dead and gone, Acrobat 11's approach is to aggregate many hitherto unavailable tools and commands and allow the user to create custom workflows. More interactivity has been built into the process, which may or may not be desirable in each case depending on the workflow context and requirements. But we have obviously moved away from the concept of processing a large number of files and towards a more targeted and effective processing of smaller sets of files. The default Actions we deliver with Acrobat 11 reflect this intention.
The feature "Batch Processing", which was an Acrobat feature from A5 (I believe) up to A9, previously had been hidden in Menu/Advanced/Document Processing/Batch Processing has been wholly replaced by a completely overhauled framework called Actions, now part of the Tools panel, and will be immediately accessible when Tools is called in the UI.
Thus the obscured Batch Processing may have been a tool considered and used by an extremely small set of users to do exactly that, i.e., batch process a large number of files, but had been fairly inflexible, generally speaking, and buggy. We were very well aware that if we were to overhaul the feature, add a considerably larger number of available tools and commands in Acrobat, provide wide possibilities for customization built towards specific workflows, and bring it to the forefront, we were going to sacrifice some of the aspects of batch processing a large number of files. Not calling it "Batch Processing" anymore - because it isn't - may be an indication of this intention.
Personally I have used and tested Batch Processing periodically during various Acrobat projects, but I don't remember encountering the "Reduce File Size" command - which is a subset of Save and file optimization - to use within a batch sequence. I may be wrong, and your screen shots would be welcome here. In fact go ahead and construct a batch sequence that (1) uses 'Reduce File Size and (2) applies file type filters to it, and post it either here or to me privately. I would be happy to be wrong. But regardless, we are grateful for positive input that points out defects, allows us to improve the functionality of the product, providing the intended changes are reasonable, and that the communication of said issues remain respectful of this process and of the individuals we depend upon to implement these changes. The tone of your response comes very close to rendering a proper consideration of this issue irrelevant.

Reduce file size

How do you reduce file size in Acrobat XI Standard?

Acrobat Standard doesn't have the optimise features, you would need Pro for that.
The other option is to create the pdf files using different job options, to lower the resolution of images for example.

Reduce File Size Crash

One of our G5 iMacs has a problem with running Reduce FIle Size in Acrobat Pro 7.0.9 and crashes every time. We've tried different compatibility, but each time it starts working on the images within the pdf, boom!
I've tried re-installing Acrobat with the same results. The full CS2 suite is installed, are there any user level prefs I can trash? Any help would be appreciated... thanks!

The G4 Macs at my school had the same problem, until they upgraded to CS3. I think it was probably a bug in Acrobat 7... have you installed all the latest updates? Check the updates section in Adobe downloads, all the updates for CS2 are still available. If that doesn't solve the problem, I would suggest upgrading to Acrobat 8, or CS3 if possible.
Kristalyn

Can using "Reduce File Size" in Acrobat Standard 9 effect DPI

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