Unable to print using the "Poster" option post the Sonoma update

Looks like Adobe paywalled this feature as I have Acrobat Reader and Acrobat Pro (payed subscription) on the same Mac running latest Sonoma and this feature is disabled in Reader but works in Pro.

If you are looking for a free tool to print posters you can try https://posterazor.sourceforge.io/online/ (I'm not the developer and just found it searching the web for free tools to print posters) but you will need the PDF converted to a format that PosteRazor tool will accept first like PNG. To convert PDF to PNG you can use free https://www.gimp.org/ app. Just open your PDF in GIMP and accept default conversion options then File > Export As and change the output filename extension to PNG (this is how GIMP will know which format to export as) and accept default PNG export options. You can then use that PNG with the online PosteRazor tool, select appropriate settings (ex: paper/page size, etc.) which will output a multipage PDF which then can be printed on your home printer.

For the Poster Option being greyed out - please check that under Printer Advanced Options - Print as Image is NOT selected

However Poster Printing is still not working - what ever size you choose it still only prints on 1 page.

Just to be clear - this is an ADOBE issue - not an Apple issue - the latest version of Adobe Reader (Free version - March 2024) for both WINDOWS and MacOS have the same issue - Poster Printing does not work

I have posted issue to Adobe - up to ADOBE to fix

Please raise this yourselved with Adobe to help promote a quicker fix.

Mac OS version 24.001.20604

Windows 11 version 2024.001.20604

I had this problem, too. For those comfortable with command-line tools and the use of homebrew, a tool called mutool has the ability to manipulate PDF files easily. In particular, running

mutool poster -x 3 -y 4 original.pdf new.pdf

will make a new PDF file from your original, with pages tiled into a 3 by 4 grid. Just pop the new file into Preview and print it.

To get a copy of mutool, you need to have homebrew installed. Here's the link to how to do that. Then you run

brew install mupdf-tools

If you're not comfortable with Terminal and the use of the Shell, this is not for you.

Ok everyone... I figured out what happened. Apparently the print poster is now a paid feature. You have to subscribe to acrobat pro and suddenly it stops greying out the poster mode button. Also to note, yes I tried all the work arounds prior. Reinstall, the advanced settings and unchecking print as image, the different settings when saving the PDF. The answer is they just want you to pay to use this :(

Once I did the free trial, boom worked as it has for ALL the prior years

I installed Adobe Acrobat Reader on 08 Jan 2024 and the poster option is greyed out.

For those not familiar or comfortable in a UNIX terminal interface, it may be best to stay away from using Terminal as there are some risks for the unwary.

Any homebrew installation is dependent on the presence of Apple's current command line developer tools. If not installed, homebrew will do so before continuing with its installation. Any package retrieved by homebrew will be compiled using that Apple developer tools and libraries as part of the package installation process. On Apple Silicon Macs, this will produce arm64 binaries.

You won't find mutool in homebrew or homebrew cask repositories. It is part of the mμPDF tools that is a separate homebrew package (e.g. muPDF) and has at least nine installation dependences (which will grow over time as additional dependencies may be added to the existing dependencies):

brew deps --tree --installed muPDF
brew info muPDF
brew install muPDF
brew cleanup --prune=all
# brew uninstall muPDF

The actual mutool binary is installed in either /opt/homebrew/bin (Apple Silicon) or /usr/local/bin (Intel macs). This means one must know how to adjust their Shell PATH variable to allow the Shell to find the mutool binary.

The following command will generate a posterized PDF (e.g. poster.pdf with you choosing the output name) with three trailing blank pages when performed on macOS Sonoma 14.4 and opened in either of Apple's Preview, or Adobe Acrobat Reader.

$(which mutool) poster -x 3 -y 4 original.pdf poster.pdf

A manual page for mutool can be found here.

The mutool binary is also an optional install from the customize panel during the MacTeX 2024 installation.

I have the same problem - I need poster sized prints. Will Apple add a fix to their next update?

After you installed the newer version of Adobe. Did it correct the problem? Are you able to print in “poster” size again?

Went onto PostaRazor and it solved two problems. I've been unable to print from CorelDraw 2021 since the Sonoma upgrade. It's important to me since I need to print out full-size plans and depended on CorelDraw's "Tile Pages" option when printing. That meant exporting as JPGs, PNGs or PDFs. Someone suggested that Adobe Reader could print on multiple pages. Problem solved… NOT. I did more searching and found this thread. It's a two step process, but it enabled me to print 1:1 scale drawings from CorelDraw without having to pay a couple hundred bucks to upgrade to CD 2024 where they have a fix to work with OS Sonoma. Otherwise, cd 2021 works perfectly well for my needs. And I don't see any reason to spend money on Adobe Reader Pro either. I'm retired and don't use these programs professionally, so keeping costs in check is important to me. This was a good find!!!

Have you checked for an Adobe reader update?

Thank you

Thank you for the updated info.

Thank you for the updated info