combining files

[default1sv5n6h73fp8]

I have 12 bank statements that I have in 12 separate pdf files.  How do I combine them into one file where there are 36 continuous pages (each statement is 3 pages).  Right now, when I combine them, I have 12 separate documents inside of one portfolio and I have to click on each month to go to those pages.  I want to be able to start on page one (January), and scroll all the way through to the last page (December).  Can anyone help me.

[Bernd Alheit]

When the files are not secured you create a PDF file.

[duplicate5FCB]

I also dowload these type of folder for my website that are also on risk

[try67 · Accepted solution]

In the Combine Files dialog click the Options button and change File Type to Single PDF:

Note that if the files you're trying to merge a digitally signed or secured this won't work. In that case you will have to use a Portfolio.

[Dean5EDC]

I am having the same problem as described here. I do not have the option of selecting the file type, but when I unchecked "Savew as PDF Portfolio" my issue was resolved. Thank you all for pointing me in the right direction.