How to merge PDF files and keep the pages in order
Combining several PDFs into one file is one of the most common document jobs: a contract with its annexes, an application with its certificates, a month of statements. It is quick to do, and a few small habits make sure the result is right the first time.
Before you start
- Gather every file in one folder so nothing gets missed.
- Decide the order you want the pages in, and name the files with numbers (01, 02, 03) if there are many.
- Open any scanned file to check that its pages are the right way up.
Merging step by step
- Open a merge tool and add all the PDFs.
- Put them in order by dragging them, or by using the arrows beside each file. They are joined from top to bottom.
- Start the merge and download the combined file.
- Open the result and scroll through it once to check the order and orientation.
Fixing problems after merging
If some pages came out sideways, rotate just those pages. If a blank page sneaked in from a double-sided scan, remove it. Both are quick fixes that do not touch the quality of the other pages.
If the merged file is too big to email or upload, compress it, or compress it to the exact size limit you have been given. Do the size step last, so you only compress once.
Add page numbers at the end
Page numbers are best added after merging, so the numbering runs through the whole document instead of restarting for each part. You can leave the first page unnumbered if it is a cover.
What to know about merged PDFs
- Page content, text, images and links on the page are kept.
- Bookmarks and fillable form fields from the original files may not carry over into the merged file.
- Password-protected PDFs must have their protection removed before they can be combined.
- Merging never changes your originals. You always download a new file.