Image quality in PDF output

When my iBook is exported to PDF or Print/Save as PDF several images have very degraded image quality. The same image prints well from pages. Any suggestions/ideas?

The same image printed from Pages looks fine.
I've inserted PDF, png, jpg (will probably try TIF/GIF next) all display the same degradation.
When a JPG is inserted as the Chapter intro image in iBooksAuthor it looks fine/much better.

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Poor Image quality upon PDF export

hi,
issue: images lose quality when viewed in PDFs
i've searched/read these and other forums for the past few days and have tried just about every suggestion out there in order to get better quality images in my PDFs and nothing works.. it's as if everyone is talking some theory without actually testing/proving what they're saying.
are pdfs inherently bad at handling raster images?
i have a few 800x1200 px renders (tiffs/jpgs) that i'd like to include in a PDF.. i'm using A4 landscape orientation because when viewed at full size on a 24" monitor, it's the size i'd like it to be (i'm not concerned with printing this pdf.. monitor only)
the images when view full size in the pdf are a bit smaller than viewing the original images full size however, the quality is a lot worse.
honestly, i'll try or retry your suggestions but at this point, i'm more/less looking for an explanation as to why this happens because from what i can tell, it's going to happen no matter what
gracias

PeterBreis0807 wrote:
Not sure what you are expecting.
well, i'm certainly expecting better quality than what i'm getting..
The jpg is contrasty and it is lower resolution than you need, but you did say that above. Which means I am not looking at what you are looking at.
The color space is srgb and the conversion from the tiff would have reduced the quality a little or a lot depending on your settings.
it doesn't matter if i use the original tiff or the jpg.. for all intents and purposes, let's forget i even have the tiff.. the jpg should look the same in the pdf (imo)
Did you print to pdf or Export? If you exported, did you use "Best" as your setting.
i've done all sort of methods.. but yeah, always at highest quality if said method allows such settings..
It has lost some contrast and is a little blurry. It looks to my eye like the degradation you get from setting the jpeg quality a little low.
well, no.. it has gone from something that is in focus to something that is out of focus.. if i open the jpg in photoshop and do a 'save as' jpg with the quality set to 3 (with 12 being best), i will get similar results as putting the jpg in a pdf.. (albeit, a different type of quality loss but just as bad)
you've seen the comparison but just in case someone else wants to look, check here:
http://homepage.mac.com/jeffhammond/Sites/imgs/origVSpdf.jpg
that's a screenshot showing the jpg on the right and the pdf output on the left (both viewed in preview)..
it's unacceptable.. but like i said earlier, i think this is an inherent aspect of pdfs and i'd settle for a decent explanation as to why it happens..
OSX has some very smart frameworks built in, which do make bitmaps displayed on screen in Cocoa apps look better than they should. Not exactly helpful if you simply want to see it unenhanced.
but still, if that's the case, why isn't osx doing the same thing to the pdf.. (and also, i highly doubt the actual quality of the image is being shown in the pdf but when i view the jpg, i'm being shown an enhanced view to the point of making an out-of-focus image being an in focus image.
jeff

Poor image quality in pdf for Aperture book

Can anyone tell me how to retain the quality of original images when I export to PDF for book production in Aperture?
I am trying to produce a book with 11 pages, in large soft back format. Most of the images are black and white, and all are PNGs. Individual files size are typically 12MB - 20MB, and the longer side of the images is mostly over 5000 pixels. They all look very clean and crisp full screen in Aperture, and there are no warning triangles in the page make-ups to highlight any instances of poor resolution.
I’m producing the PDF, via ‘Print’ > ‘Save as PDF’. The resulting file is 2.6MB.
Viewed in Preview, some of the images in the PDF superficially appear to be OK. Some are not - and are very indistinct. Zooming in on the images in Preview shows that very few are useable.
I produced a colour book, with larger pages last year and was very happy with both the PDF and the finished book in print. Some example file sizes from that one were: 15.3MB (3950x2633) and 9.30MB (2880x 1920).
I had expected the black and white images to work even better.
What am I doing wrong here?
I'm using Aperture 3.2.1 on a MacBook Pro running 10.6.8.

I just remade the same book - as a test - in the extra large hardback format (ie. the one I used for the previous publication, last year).
This time, the pictures are fine. The images appear to be the same quality in the PDF as the originals - much, much better. The size of the file has increased massively too > up from just 2.6MB to 52.8MB.
So does the books production function work well only with the biggest, most expensive option?
I'd really appreciate some feedback from anyone who's tried the different sizes, and preferably some brilliant ideas to make them all work equally well.

Image quality in PDF files

Hi. I add images to pdf files all the time and I have a question about them. The image quality seems to be bad in certain situations. For example I added a 501x483 72dpi gif image to a 1190x1684 pdf file. It looks great at 75% zoom but really jagged at 100% zoom. Why is it like this? Shouldn't it be same as the original image file at 100% zoom?
I'd really appreciate any guidance about making images look better in pdf files.

Hi
Thanks for the responses. I tried Print to PDF. In that images look better although they are little distorted. However, I cannot use print because the Table of Contents prepared in Word does not work when we use Print. Secondly, the PDF file size becomes too large when using Print to PDF.
While directly creating PDF from word using Acrobat, I changed settings for Images (in Preferences) turning downsampling off after changing it to 1800 pixels but that did not help either. Is there anything I am missing out or Is there any other resolution?
Else is there any setting in PDF so that after conversion we can show the images more clearly, maybe if someone hovers over the image it becomes big or clicking on it makes it look bigger.
Looking forward to make this problem resolve.
Thanks

Dynamic images in reports -- PDF output

In Reports uilder I can link an image object to a URL as described in the product help. This works well with an HTML output but in PDF only the image URL appears.
How could I solve this problem?
Thank you.

Hi,
The URL method of including images in valid only for HTML output.
The Reports Builder Help on "Images says that:
You can add an image to a report by:
- selecting a column in the database that contains images
- importing the image from a file into the report layout
- linking an image object to a file
- for HTML output, selecting a column in the database that contains URL links to images or linking an image object to a URL
If you reference a URL for an image, the image is displayed when you format your report for HTML output. For other output formats, the URL text displays in the Paper Design view
The reason for this is that Oracle Reports will only write the URL in the output. In case of HTML output, the browser can understand the URL, so it will fetch the image from the URL and show it. But this cannot be done by Acrobat Reader.
For PDF output you will have to use one of the other methods of inserting an image.
Navneet.

Horribe image quality in PDF

Hello,
my problem is very simple.
The quality of the image of my PDF is really horrible.
I need to have a PDF file because in order to print a magazine, that's the file that I need.
So I converted my picture:
http://image.noelshack.com/fichiers/2013/09/1362170332-2.png
Good quality for now.
Then, when I convert it PDF with Adobe Acrobat XI,
the result is very blurry, I tried to print it, very very bad quality ...
Is there any solution to keep the quality as good as it was?
(by the way, my image was a .png )
Thanks to the person who'll help me!

The relative quality of any bitmap file after conversion to PDF depends entirely on the conversion settings you used. A lossless PNG file could be compressed to a super-low-quality JPEG or kept visually identical with lossless JPEG2000 compression depending on how and where the PDF is made.
As your screenshot shows the image within a page of text, I assume you're creating the PDF from another application - in which case the export settings will control everything. If you convert an isolated image file to PDF with drag-drop or the Create.. button on the Acrobat toolbar, the settings are defined by Preferences > Convert to PDF > PNG and default to "JPEG medium".

Image issue in PDF output

I am running into an issue that I have narrowed down to the PDF output generated by XML Publisher. I have an image file (JPEG format) that is dynamically loaded from a file in $OA_MEDIA. When the output is PDF and when it is printed, the image is enclosed in a gray rectangle. When the output is RTF, the image is not enclosed. In either case, screen previews do not show any borders around the image. Has anyone encountered this issue?
Thanks in advance,
Sunder

make sure when you are printing the document that you are using a postscript printer driver. If you are using pcl it will encase the image with a light grey background

MBP Retina: Poor image quality from hdmi output

I just had to return a Macbook Pro 13" because of this problem. I was using a HP 2311 HDMI monitor. At first, the screen would only show the upper half of the dock. I was on the phone with Apple Care and they suggested I use underscan. It worked, in that it corrected the screen size problem, but the image quality, especially rating to text was ridiculously poor. There was no suggestion available as to how to fix this. Yet, in display it says that the display is optimized for the HP 2011.
I must say I was really surprised about this defect. I was even more surprised that the problem has been around so long without a resolution. There is no doubt that this shakes my confidence in Apple products. Thankfully, my iPad, iPod and Apple TV have always been reliable.

I've now tested with the following cables/adapters between my rMBP -> Dell U2410:
mDP -> VGA
mDP -> DVI
mDP -> HDMI
HDMI -> HDMI
HDMI -> DP
None of them work. Some people are reporting *minor* differences when switching from HDMI to DVI, but I think that's mainly psychological persuasion. In my experience nothing helps - fonts are still blurry, bad image quality. I've taken still photos with a Cannon DSLR to compare the pixels - no difference.
Someone also reported on other threads that lowering the Dell U2410's sharpness "solves" the problem, I find this to be untrue and a "fool's solution". Fonts do look sharper, but everything else looks horrible.
My understanding is that this is related to rMBP and/or Mountain Lion external display drivers. Hopefully this can be addressed with a software update. I really hope Apple is aware of this issue (many have filed bug reports).
More "good" discussion on the matter can be found here: http://forums.macrumors.com/showthread.php?t=1390034

Image Quality in PDF Reports

Hi,
I have a rectangular JPG image which is holding the company logo. Most of the image's background is coloured white.
If I import the image into MS Word for example, when I print out the document the image is very high quality, sharp, etc.
When I import this image into an Oracle Reports via menu: insert / image, although it appears fine when looking at it in Report Builder on the 'Paper Layout', when I run the report the image in the output PDF has lost quality and when printed out, the white background (which should be white) prints as as a light shade of grey.
Does anyone know how to stop the loss of quality on the image and how to stop the background of the image printing as light grey ?
I'm running Report Builder 10.1.2.0.2.
Many Thanks, Mark

This document explains how to increase the image resolution when exporting:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/30407084-c51d-2b10-1f81-813488350e6f
But it's for Crystal Enterprise 8.0, do you know if Crystal Reports 11 will work the same way?

Image quality with PDF gallery pages

Hello,
I'm a bit disappointed in the quality of the artwork in the PDFs that I create with Bridge output. They're very pixelated. My original artwork is just vector EPS files. Why can't Bridge create vector output in the PDFs? I chose the highest quality in the settings there.
Thanks,
Peter

Why can't Bridge create vector output in the PDFs?
It seems an old problem:
also check this older thread and some other links in that thread. Maybe even drop a feature request.

Maximum Image Quality for PDF Export

I'm having a pretty big pain with some of my images, and I wanted to make sure that when i'm exporting my document to a PDF, I'm getting the very best resolution possible. I've attached a screenshot of the settings I'm using... are these the best settings I can set for getting the best resolution from my PDF
export?

First, the cost of printng isn't necessarily directly related to quality. There are too many factors such as full color and additional spot plates, the size of the run, and the size and type of the press to make any judgements based on price, not to mention the skill and standards of the printer. And then you still have many printers willing to do the same quality work at a variety of prices depending on location, market, and how busy they are. Kind of like making a genearlization about the price of a car.
@ Luke, setting downsampling to none will guarantee that all images are sent at full resolution, but that isn't necessarily a good thing. As already pointed out there is no advantage in sending more data than required to print the image. The OP has alread chosen ZIP compression, which is lossless, so he isn't introducing any jpeg artifacts, so all the downsampling is doing is setting a ceiling above which images will be downsampled. Images below that threshold will be sent at full res.

Losing vector image quality in PDF

I have created designs in PS using vectors which were all hi res, when saving to PDF the images are all terrible quality- except the script that I have added which remains crystal clear. I have gone back and checked the saved resolution and it was fine. Any suggestions?

Photoshop rasterizes PDFs when opening them. Try saving to PSD or TIFF formats instead.

Report builder, image issue with PDF output

hi there,
i generate report to PDF. i got the company logo on the header. everything is working fine. my pdf is generated and my letter comes out nice and proper.
now once the PDF is generate and i view it on adobe reader, i want to protect the logo from been copied. like, when u click on the image and then right click on it, it gives u the option to copy image. i want to protect this from happening. i dnt want the logo to be able to be copied.
anyone know on how i can protect the images from been copied. or direct me to a site where i can find some help.
thanks in advance.
cheers
The software and version i am uising
Oracle9i Enterprise Edition Release 9.2.0.5.0 - Production
With the Partitioning option
JServer Release 9.2.0.5.0 - Production
Report Builder 10.1.2.0.2
ORACLE Server Release 10.1.0.4.2
Oracle Procedure Builder 10.1.2.0.2
Oracle ORACLE PL/SQL V10.1.0.4.2 - Production
Oracle CORE 10.1.0.4.0 Production
Oracle Tools Integration Services 10.1.2.0.2
Oracle Tools Common Area 10.1.2.0.2
Oracle Toolkit 2 for Windows 32-bit platforms 10.1.2.0.2
Resource Object Store 10.1.2.0.2
Oracle Help 10.1.2.0.2
Oracle Sqlmgr 10.1.2.0.2
Oracle Query Builder 10.1.2.0.2 - Production
PL/SQL Editor (c) WinMain Software (www.winmain.com), v1.0 (Production)
Oracle ZRC 10.1.2.0.2
Oracle XML Developers Kit 10.1.0.4.2 - Production
Oracle Virtual Graphics System 10.1.2.0.2
Oracle Image 10.1.2.0.2
Oracle Multimedia Widget 10.1.2.0.2
Oracle Tools GUI Utilities 10.1.2.0.2

You can configure a custom destination (securePDF) to enable PDF security settings.
Check out the following thread Re: how can prevent user for printing report
Edited by: Rodolfo Ferrari on Jun 18, 2009 11:25 PM

Controlling image size in PDF output

Hi, I'm generating PDFs from both Word and FrameMaker source files, as well as HTML through ePublisher. When I compare PDFs generated from FrameMaker with the HTML version, the images are pretty much identical in size, but images in PDFs generated from Word are about double the size when the PDF is viewed at 100%. I don't see any obvious settings in Distiller to control this. Is this something caused by (a setting in) Word, or do I need to modfiy something in my Acrobat job options?
Thanks in advance,
Jim
Message was edited by: Roannais

make sure when you are printing the document that you are using a postscript printer driver. If you are using pcl it will encase the image with a light grey background

Crystal Reports Developer 11 - image quality in exported pdf file

I need to create a report with many images and export it to a pdf file. The image quality in the pdf file is slightly lower than in the rpt file. Can someone tell me how to increase the image quality in pdf file?
Thanks,
Hong

This document explains how to increase the image resolution when exporting:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/30407084-c51d-2b10-1f81-813488350e6f
But it's for Crystal Enterprise 8.0, do you know if Crystal Reports 11 will work the same way?

Image quality in PDF output

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