How do I get Acrobat to stop RESIZING images, when converting to PDF

Legend

Well, the plug-in is what's doing all the work - as it always has - so clearly it's doing the job. Right or wrong.

Legend

By the way, are these files the direct result of an Illustrator export - Acrobat import. Or have they been through any kind of image archiver/organiser such as Lightroom, Photos or anything else?

dianeg_fetchAuthor

Participating Frequently

Correct these are directly exported from Illustrator and imported in to Acrobat without anything else.

Could this have something to do with the image conversion plug-in in Acrobat?

Legend

I'm going to look at the innards of the JPEG now. Since Acrobat is entirely capable of keeping a JPEG's ppi unchanged, there must be something different about this one. My money is on conflicting metadata, as I may have mentioned.

Legend

Ok, I was testing on Windows. I can report that I DO get this problem with your file on Windows with your file, but not with my file. So it is somehow related to the file itself. You saved it from Illustrator I think, but what version exactly? I used CC2017 and I used Export.

Further info: I find that Acrobat DC sees the file as 72 ppi, even though Photoshop sees it as 300 ppi. I also find that Acrobat X sees the file as 300 ppi and makes a file the expected size...

dianeg_fetchAuthor

Participating Frequently

I have the most recent version of Illustrator which is CC2018 or v 22.1 this is my version of Acrobat. Like I said before I could make a JPG of anything. This was a test file, but it was at the specs I listed a few post prior.

Why is Acrobat changing the ppi and how can i get it to stop?

Legend

While I don't think it's a single problem file, it COULD possibly be some combination of settings or the exact software that makes it. (There are weird metadata issues possible: a JPEG can actually contain two conflicting resolutions, I've seen this once). So I'd rather test with your file if it can be shared.

Legend

Thanks for your tests. They seem to show an Acrobat problem indeed. I repeated them and got the results I expected (accurate size) rather than yours. So let's try and get closer to the problem.

1. What is your exact version of Acrobat? Mine is 2018.011.20038.

2. Are you able to share the JPEG you're working with? I know it's probably Acrobat rather than the JPEG, but it's worth working with the same file, and the previous poster wasn't able to share theirs. Please DON'T post the JPEG in the forum, I think the forum software will mess with it. Instead you'd need to put it in a ZIP on a file sharing site.

Luke Jennings

Inspiring

Dianeg identified her Acrobat version and OS in post 6. I confirmed her results in post 7, so I don't think it's the file. I am also on a Mac, vers. 10.11.6 and using the the same Acrobat version dianeg is using. Are you using a PC? perhaps it's a Mac issue?

If a few PC users can do a test, that could be helpful to identify the issue.

Legend

Ok, please take that same JPEG (the one you exported from AI) and open it in Photoshop. Look under Image SIze. What does it show for ppi, inches and pixels?

dianeg_fetchAuthor

Participating Frequently

In Photoshop it is correct: 8.5 x 11 at 300ppi

Legend

Ok, I'd like to get to the bottom of this. Many people have reported that Acrobat "sizes JPEGs wrong" but nobody has yet showed it to be so. Doesn't mean it can't happen, but I'd like to see what happens with checks at each step, as otherwise we're stuck with random problems, and that doesn't help anyone...

So, you create JPEG files which you believe to be the correct size in inches. They will also have a size in pixels of course, and (we hope) a ppi value, so we can use the pixels / ppi = size in inches formula.

You open the JPEG in Photoshop and you say the size is correct. I assume you mean you go to Image > Image Size and you see all the info you'd expect (size in pixels, size in inches, ppi). (1. Please confirm)

Now, I don't know where a "print dialog menu" comes into anything, so let's leave that out for now unless you feel it's vital.

So, (2) how do you get the JPEG into Acrobat as a PDF? Please give one specific method. (3) how do you check the size in inches in Acrobat?

dianeg_fetchAuthor

Participating Frequently

I will give you the step by step process:

Illustrator Document 8.5 x 11: CMKY

File: Export as Jpg: Use Artboard: Export Jpeg settings:

Quality: 10 Maximum

Compression: Baseline (standard)

Resolution: High (300ppi)

Anti-Aliasing::Type Optimized

Acrobat: Create PDF from File: (Choose created jpg)

Jpeg comes in Dimensions: 45.83 x 35.42in (Shows in lower left hand corner)

To check actual size i go to the print dialog box and select:Print Actual Size and it confirms the size as well

Legend

P.S. A key problem is that it seems to be possible to create an Illustrator file sized in "pixels". You cannot do this, and while it is not a bug it is (in my mind) a very poor design.

dianeg_fetchAuthor

Participating Frequently

Sorry I'm not really understanding what you're meaning by this. All my issues with this matter are files saved in inches. I'm a graphics packing designer and all my work is done in either inches or centimeters respectively.

When I export jpegs this means they'd be in inches. It shows this if I open the jpegs in Photoshop or place them in an Indesign document. However trying to format them into a PDF changes the sizes dramatically on it's own.

Further proof is the print dialog menu, if I was to print these converted jpf/pdfs i have to "scale to page" because they are often 5X bigger than the original. It's terrible.

If i export my Illustrator file as a pdf from the get go no sizing changes occur, but i often export them as jpegs first to flatten them so they cannot be messed with my outside sources.