Hello Gharryh,As per the description above, you want to print an A3 sized PDF into two A4 pages, Is that correct?Please refer to the following Adobe discussion and try the suggestions marked as correct and helpful Need to print A3 format file into A4 format Try the steps from the following discussion marked as helpful in Adobe Reader How to print A3 spread in 2x A4 Let us know how it goes and share your findings.Thanks,Anand Sri.
Hi, I know this question is old, but maybe this answer is still helpful to other users.
To print any large paper size pdf-file on multiple A4 sheets (or letter size), there is actually a built-in function in the print dialogue of Acrobat Reader (and Acrobat DC).
Open your file, choose print, and in the printing dialogue click the [poster] button. The options under the buttons then change to the poster function. You can define the scale of the parts your printing and you can even define an overlap, which is helpful if you want to glue your poster together from the A4 sheets. The preview in the print dialogue lets you see how the pages are split up.